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  54             <a href="index.html" class="icon icon-home"> libmemcached
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  63               <div class="version">
  64                 1.0
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  88               <p class="caption"><span class="caption-text">Basics</span></p>
  89 <ul>
  90 <li class="toctree-l1"><a class="reference internal" href="libmemcached.html">Introducing the C Client Library for memcached</a><ul>
  91 <li class="toctree-l2"><a class="reference internal" href="libmemcached.html#synopsis">SYNOPSIS</a></li>
  92 <li class="toctree-l2"><a class="reference internal" href="libmemcached.html#description">DESCRIPTION</a></li>
  93 <li class="toctree-l2"><a class="reference internal" href="libmemcached.html#constants">CONSTANTS</a></li>
  94 <li class="toctree-l2"><a class="reference internal" href="libmemcached.html#threads-and-processes">THREADS AND PROCESSES</a></li>
  95 <li class="toctree-l2"><a class="reference internal" href="libmemcached.html#see-also">SEE ALSO</a></li>
  96 </ul>
  97 </li>
  98 <li class="toctree-l1"><a class="reference internal" href="versioning.html">Versioning</a></li>
  99 <li class="toctree-l1"><a class="reference internal" href="memcached_create.html">Creating and destroying a memcached_st</a><ul>
 100 <li class="toctree-l2"><a class="reference internal" href="memcached_create.html#synopsis">SYNOPSIS</a></li>
 101 <li class="toctree-l2"><a class="reference internal" href="memcached_create.html#description">DESCRIPTION</a></li>
 102 <li class="toctree-l2"><a class="reference internal" href="memcached_create.html#return">RETURN</a></li>
 103 <li class="toctree-l2"><a class="reference internal" href="memcached_create.html#see-also">SEE ALSO</a></li>
 104 </ul>
 105 </li>
 106 <li class="toctree-l1"><a class="reference internal" href="libmemcached_examples.html">Examples</a><ul>
 107 <li class="toctree-l2"><a class="reference internal" href="libmemcached_examples.html#description">DESCRIPTION</a></li>
 108 <li class="toctree-l2"><a class="reference internal" href="libmemcached_examples.html#connecting-to-servers">Connecting to servers</a></li>
 109 <li class="toctree-l2"><a class="reference internal" href="libmemcached_examples.html#creating-a-pool-of-servers">Creating a pool of servers</a></li>
 110 <li class="toctree-l2"><a class="reference internal" href="libmemcached_examples.html#adding-a-value-to-the-server">Adding a value to the server</a></li>
 111 <li class="toctree-l2"><a class="reference internal" href="libmemcached_examples.html#fetching-multiple-values">Fetching multiple values</a></li>
 112 <li class="toctree-l2"><a class="reference internal" href="libmemcached_examples.html#see-also">SEE ALSO</a></li>
 113 </ul>
 114 </li>
 115 <li class="toctree-l1"><a class="reference internal" href="libmemcached_configuration.html">Configuring Libmemcached</a><ul>
 116 <li class="toctree-l2"><a class="reference internal" href="libmemcached_configuration.html#synopsis">SYNOPSIS</a></li>
 117 <li class="toctree-l2"><a class="reference internal" href="libmemcached_configuration.html#description">DESCRIPTION</a></li>
 118 <li class="toctree-l2"><a class="reference internal" href="libmemcached_configuration.html#environment">ENVIRONMENT</a></li>
 119 <li class="toctree-l2"><a class="reference internal" href="libmemcached_configuration.html#return">RETURN</a></li>
 120 <li class="toctree-l2"><a class="reference internal" href="libmemcached_configuration.html#example">EXAMPLE</a></li>
 121 <li class="toctree-l2"><a class="reference internal" href="libmemcached_configuration.html#see-also">SEE ALSO</a></li>
 122 </ul>
 123 </li>
 124 <li class="toctree-l1"><a class="reference internal" href="libmemcached/memcached_last_error_message.html">Retrieving errors</a><ul>
 125 <li class="toctree-l2"><a class="reference internal" href="libmemcached/memcached_last_error_message.html#synopsis">SYNOPSIS</a></li>
 126 <li class="toctree-l2"><a class="reference internal" href="libmemcached/memcached_last_error_message.html#description">DESCRIPTION</a></li>
 127 <li class="toctree-l2"><a class="reference internal" href="libmemcached/memcached_last_error_message.html#return">RETURN</a></li>
 128 <li class="toctree-l2"><a class="reference internal" href="libmemcached/memcached_last_error_message.html#see-also">SEE ALSO</a></li>
 129 </ul>
 130 </li>
 131 </ul>
 132 <p class="caption"><span class="caption-text">Working with Data</span></p>
 133 <ul class="current">
 134 <li class="toctree-l1 current"><a class="current reference internal" href="#">Incrementing and Decrementing Values</a><ul>
 135 <li class="toctree-l2"><a class="reference internal" href="#synopsis">SYNOPSIS</a></li>
 136 <li class="toctree-l2"><a class="reference internal" href="#description">DESCRIPTION</a></li>
 137 <li class="toctree-l2"><a class="reference internal" href="#return">RETURN</a></li>
 138 <li class="toctree-l2"><a class="reference internal" href="#see-also">SEE ALSO</a></li>
 139 </ul>
 140 </li>
 141 <li class="toctree-l1"><a class="reference internal" href="memcached_delete.html">Deleting data from a server</a><ul>
 142 <li class="toctree-l2"><a class="reference internal" href="memcached_delete.html#synopsis">SYNOPSIS</a></li>
 143 <li class="toctree-l2"><a class="reference internal" href="memcached_delete.html#description">DESCRIPTION</a></li>
 144 <li class="toctree-l2"><a class="reference internal" href="memcached_delete.html#return">RETURN</a></li>
 145 <li class="toctree-l2"><a class="reference internal" href="memcached_delete.html#see-also">SEE ALSO</a></li>
 146 </ul>
 147 </li>
 148 <li class="toctree-l1"><a class="reference internal" href="libmemcached/memcached_exist.html">Determine if a keys exists.</a><ul>
 149 <li class="toctree-l2"><a class="reference internal" href="libmemcached/memcached_exist.html#synopsis">SYNOPSIS</a></li>
 150 <li class="toctree-l2"><a class="reference internal" href="libmemcached/memcached_exist.html#description">DESCRIPTION</a></li>
 151 <li class="toctree-l2"><a class="reference internal" href="libmemcached/memcached_exist.html#return">RETURN</a></li>
 152 <li class="toctree-l2"><a class="reference internal" href="libmemcached/memcached_exist.html#see-also">SEE ALSO</a></li>
 153 </ul>
 154 </li>
 155 <li class="toctree-l1"><a class="reference internal" href="memcached_flush_buffers.html">Flushing client buffers</a><ul>
 156 <li class="toctree-l2"><a class="reference internal" href="memcached_flush_buffers.html#synopsis">SYNOPSIS</a></li>
 157 <li class="toctree-l2"><a class="reference internal" href="memcached_flush_buffers.html#description">DESCRIPTION</a></li>
 158 <li class="toctree-l2"><a class="reference internal" href="memcached_flush_buffers.html#return">RETURN</a></li>
 159 <li class="toctree-l2"><a class="reference internal" href="memcached_flush_buffers.html#see-also">SEE ALSO</a></li>
 160 </ul>
 161 </li>
 162 <li class="toctree-l1"><a class="reference internal" href="memcached_flush.html">Wiping clean the contents of a server</a><ul>
 163 <li class="toctree-l2"><a class="reference internal" href="memcached_flush.html#synopsis">SYNOPSIS</a></li>
 164 <li class="toctree-l2"><a class="reference internal" href="memcached_flush.html#description">DESCRIPTION</a></li>
 165 <li class="toctree-l2"><a class="reference internal" href="memcached_flush.html#return">RETURN</a></li>
 166 <li class="toctree-l2"><a class="reference internal" href="memcached_flush.html#see-also">SEE ALSO</a></li>
 167 </ul>
 168 </li>
 169 <li class="toctree-l1"><a class="reference internal" href="memcached_get.html">Retrieving data from the server</a><ul>
 170 <li class="toctree-l2"><a class="reference internal" href="memcached_get.html#synopsis">SYNOPSIS</a></li>
 171 <li class="toctree-l2"><a class="reference internal" href="memcached_get.html#description">DESCRIPTION</a></li>
 172 <li class="toctree-l2"><a class="reference internal" href="memcached_get.html#return">RETURN</a></li>
 173 <li class="toctree-l2"><a class="reference internal" href="memcached_get.html#see-also">SEE ALSO</a></li>
 174 </ul>
 175 </li>
 176 <li class="toctree-l1"><a class="reference internal" href="memcached_result_st.html">Working with result sets</a><ul>
 177 <li class="toctree-l2"><a class="reference internal" href="memcached_result_st.html#synopsis">SYNOPSIS</a></li>
 178 <li class="toctree-l2"><a class="reference internal" href="memcached_result_st.html#description">DESCRIPTION</a></li>
 179 <li class="toctree-l2"><a class="reference internal" href="memcached_result_st.html#return">RETURN</a></li>
 180 <li class="toctree-l2"><a class="reference internal" href="memcached_result_st.html#see-also">SEE ALSO</a></li>
 181 </ul>
 182 </li>
 183 <li class="toctree-l1"><a class="reference internal" href="memcached_set.html">Store, replace, add, or atomically add data to the server</a><ul>
 184 <li class="toctree-l2"><a class="reference internal" href="memcached_set.html#synopsis">SYNOPSIS</a></li>
 185 <li class="toctree-l2"><a class="reference internal" href="memcached_set.html#description">DESCRIPTION</a></li>
 186 <li class="toctree-l2"><a class="reference internal" href="memcached_set.html#return">RETURN</a></li>
 187 <li class="toctree-l2"><a class="reference internal" href="memcached_set.html#see-also">SEE ALSO</a></li>
 188 </ul>
 189 </li>
 190 <li class="toctree-l1"><a class="reference internal" href="memcached_append.html">Appending or Prepending to data on the server</a><ul>
 191 <li class="toctree-l2"><a class="reference internal" href="memcached_append.html#synopsis">SYNOPSIS</a></li>
 192 <li class="toctree-l2"><a class="reference internal" href="memcached_append.html#description">DESCRIPTION</a></li>
 193 <li class="toctree-l2"><a class="reference internal" href="memcached_append.html#return">RETURN</a></li>
 194 <li class="toctree-l2"><a class="reference internal" href="memcached_append.html#see-also">SEE ALSO</a></li>
 195 </ul>
 196 </li>
 197 <li class="toctree-l1"><a class="reference internal" href="memcached_cas.html">Working with data on the server in an atomic fashion</a><ul>
 198 <li class="toctree-l2"><a class="reference internal" href="memcached_cas.html#synopsis">SYNOPSIS</a></li>
 199 <li class="toctree-l2"><a class="reference internal" href="memcached_cas.html#description">DESCRIPTION</a></li>
 200 <li class="toctree-l2"><a class="reference internal" href="memcached_cas.html#return">RETURN</a></li>
 201 <li class="toctree-l2"><a class="reference internal" href="memcached_cas.html#see-also">SEE ALSO</a></li>
 202 </ul>
 203 </li>
 204 </ul>
 205 <p class="caption"><span class="caption-text">Advanced Topics</span></p>
 206 <ul>
 207 <li class="toctree-l1"><a class="reference internal" href="libmemcached-1.0/memcached_set_encoding_key.html">Set encryption key</a><ul>
 208 <li class="toctree-l2"><a class="reference internal" href="libmemcached-1.0/memcached_set_encoding_key.html#synopsis">SYNOPSIS</a></li>
 209 <li class="toctree-l2"><a class="reference internal" href="libmemcached-1.0/memcached_set_encoding_key.html#description">DESCRIPTION</a></li>
 210 <li class="toctree-l2"><a class="reference internal" href="libmemcached-1.0/memcached_set_encoding_key.html#return">RETURN</a></li>
 211 <li class="toctree-l2"><a class="reference internal" href="libmemcached-1.0/memcached_set_encoding_key.html#see-also">SEE ALSO</a></li>
 212 </ul>
 213 </li>
 214 <li class="toctree-l1"><a class="reference internal" href="memcached_behavior.html">Modifying how the driver behaves</a><ul>
 215 <li class="toctree-l2"><a class="reference internal" href="memcached_behavior.html#synopsis">SYNOPSIS</a></li>
 216 <li class="toctree-l2"><a class="reference internal" href="memcached_behavior.html#description">DESCRIPTION</a></li>
 217 <li class="toctree-l2"><a class="reference internal" href="memcached_behavior.html#return">RETURN</a></li>
 218 <li class="toctree-l2"><a class="reference internal" href="memcached_behavior.html#notes">NOTES</a></li>
 219 <li class="toctree-l2"><a class="reference internal" href="memcached_behavior.html#see-also">SEE ALSO</a></li>
 220 </ul>
 221 </li>
 222 <li class="toctree-l1"><a class="reference internal" href="memcached_callback.html">Setting callbacks</a><ul>
 223 <li class="toctree-l2"><a class="reference internal" href="memcached_callback.html#synopsis">SYNOPSIS</a></li>
 224 <li class="toctree-l2"><a class="reference internal" href="memcached_callback.html#description">DESCRIPTION</a></li>
 225 <li class="toctree-l2"><a class="reference internal" href="memcached_callback.html#return">RETURN</a></li>
 226 <li class="toctree-l2"><a class="reference internal" href="memcached_callback.html#see-also">SEE ALSO</a></li>
 227 </ul>
 228 </li>
 229 <li class="toctree-l1"><a class="reference internal" href="memcached_dump.html">Dumping data from a server</a><ul>
 230 <li class="toctree-l2"><a class="reference internal" href="memcached_dump.html#synopsis">SYNOPSIS</a></li>
 231 <li class="toctree-l2"><a class="reference internal" href="memcached_dump.html#description">DESCRIPTION</a></li>
 232 <li class="toctree-l2"><a class="reference internal" href="memcached_dump.html#return">RETURN</a></li>
 233 <li class="toctree-l2"><a class="reference internal" href="memcached_dump.html#see-also">SEE ALSO</a></li>
 234 </ul>
 235 </li>
 236 <li class="toctree-l1"><a class="reference internal" href="memcached_generate_hash_value.html">Generating hash values directly</a><ul>
 237 <li class="toctree-l2"><a class="reference internal" href="memcached_generate_hash_value.html#synopsis">SYNOPSIS</a></li>
 238 <li class="toctree-l2"><a class="reference internal" href="memcached_generate_hash_value.html#description">DESCRIPTION</a></li>
 239 <li class="toctree-l2"><a class="reference internal" href="memcached_generate_hash_value.html#return">RETURN</a></li>
 240 <li class="toctree-l2"><a class="reference internal" href="memcached_generate_hash_value.html#see-also">SEE ALSO</a></li>
 241 </ul>
 242 </li>
 243 <li class="toctree-l1"><a class="reference internal" href="memcached_memory_allocators.html">Use custom allocators for embedded usage</a><ul>
 244 <li class="toctree-l2"><a class="reference internal" href="memcached_memory_allocators.html#synopsis">SYNOPSIS</a></li>
 245 <li class="toctree-l2"><a class="reference internal" href="memcached_memory_allocators.html#description">DESCRIPTION</a></li>
 246 <li class="toctree-l2"><a class="reference internal" href="memcached_memory_allocators.html#notes">NOTES</a></li>
 247 <li class="toctree-l2"><a class="reference internal" href="memcached_memory_allocators.html#return">RETURN</a></li>
 248 <li class="toctree-l2"><a class="reference internal" href="memcached_memory_allocators.html#see-also">SEE ALSO</a></li>
 249 </ul>
 250 </li>
 251 <li class="toctree-l1"><a class="reference internal" href="memcached_quit.html">Disconnecting a client from a server</a><ul>
 252 <li class="toctree-l2"><a class="reference internal" href="memcached_quit.html#synopsis">SYNOPSIS</a></li>
 253 <li class="toctree-l2"><a class="reference internal" href="memcached_quit.html#description">DESCRIPTION</a></li>
 254 <li class="toctree-l2"><a class="reference internal" href="memcached_quit.html#return">RETURN</a></li>
 255 <li class="toctree-l2"><a class="reference internal" href="memcached_quit.html#see-also">SEE ALSO</a></li>
 256 </ul>
 257 </li>
 258 <li class="toctree-l1"><a class="reference internal" href="libmemcached/memcached_return_t.html">Error Codes (memcached_return_t)</a><ul>
 259 <li class="toctree-l2"><a class="reference internal" href="libmemcached/memcached_return_t.html#synopsis">SYNOPSIS</a></li>
 260 <li class="toctree-l2"><a class="reference internal" href="libmemcached/memcached_return_t.html#see-also">SEE ALSO</a></li>
 261 </ul>
 262 </li>
 263 <li class="toctree-l1"><a class="reference internal" href="memcached_sasl.html">SASL support</a><ul>
 264 <li class="toctree-l2"><a class="reference internal" href="memcached_sasl.html#synopsis">SYNOPSIS</a></li>
 265 <li class="toctree-l2"><a class="reference internal" href="memcached_sasl.html#description">DESCRIPTION</a></li>
 266 <li class="toctree-l2"><a class="reference internal" href="memcached_sasl.html#return">RETURN</a></li>
 267 <li class="toctree-l2"><a class="reference internal" href="memcached_sasl.html#see-also">SEE ALSO</a></li>
 268 </ul>
 269 </li>
 270 <li class="toctree-l1"><a class="reference internal" href="memcached_server_st.html">Managing lists of servers</a><ul>
 271 <li class="toctree-l2"><a class="reference internal" href="memcached_server_st.html#synopsis">SYNOPSIS</a></li>
 272 <li class="toctree-l2"><a class="reference internal" href="memcached_server_st.html#description">DESCRIPTION</a></li>
 273 <li class="toctree-l2"><a class="reference internal" href="memcached_server_st.html#return">RETURN</a></li>
 274 <li class="toctree-l2"><a class="reference internal" href="memcached_server_st.html#see-also">SEE ALSO</a></li>
 275 </ul>
 276 </li>
 277 <li class="toctree-l1"><a class="reference internal" href="memcached_servers.html">Manipulate the server information stored in memcached_st</a><ul>
 278 <li class="toctree-l2"><a class="reference internal" href="memcached_servers.html#synopsis">SYNOPSIS</a></li>
 279 <li class="toctree-l2"><a class="reference internal" href="memcached_servers.html#description">DESCRIPTION</a></li>
 280 <li class="toctree-l2"><a class="reference internal" href="memcached_servers.html#return">RETURN</a></li>
 281 <li class="toctree-l2"><a class="reference internal" href="memcached_servers.html#see-also">SEE ALSO</a></li>
 282 </ul>
 283 </li>
 284 <li class="toctree-l1"><a class="reference internal" href="memcached_strerror.html">Converting Errors, memcached_return_t, to strings</a><ul>
 285 <li class="toctree-l2"><a class="reference internal" href="memcached_strerror.html#synopsis">SYNOPSIS</a></li>
 286 <li class="toctree-l2"><a class="reference internal" href="memcached_strerror.html#description">DESCRIPTION</a></li>
 287 <li class="toctree-l2"><a class="reference internal" href="memcached_strerror.html#return">RETURN</a></li>
 288 <li class="toctree-l2"><a class="reference internal" href="memcached_strerror.html#see-also">SEE ALSO</a></li>
 289 </ul>
 290 </li>
 291 <li class="toctree-l1"><a class="reference internal" href="error_messages.html">Client Error messages</a><ul>
 292 <li class="toctree-l2"><a class="reference internal" href="client_errors/MEMCACHED_AUTH_CONTINUE.html">MEMCACHED_AUTH_CONTINUE</a></li>
 293 <li class="toctree-l2"><a class="reference internal" href="client_errors/MEMCACHED_AUTH_FAILURE.html">MEMCACHED_AUTH_FAILURE</a></li>
 294 <li class="toctree-l2"><a class="reference internal" href="client_errors/MEMCACHED_AUTH_PROBLEM.html">MEMCACHED_AUTH_PROBLEM</a></li>
 295 <li class="toctree-l2"><a class="reference internal" href="client_errors/MEMCACHED_BAD_KEY_PROVIDED.html">MEMCACHED_BAD_KEY_PROVIDED</a></li>
 296 <li class="toctree-l2"><a class="reference internal" href="client_errors/MEMCACHED_BUFFERED.html">MEMCACHED_BUFFERED</a></li>
 297 <li class="toctree-l2"><a class="reference internal" href="client_errors/MEMCACHED_CLIENT_ERROR.html">MEMCACHED_CLIENT_ERROR</a></li>
 298 <li class="toctree-l2"><a class="reference internal" href="client_errors/MEMCACHED_CONNECTION_BIND_FAILURE.html">MEMCACHED_CONNECTION_BIND_FAILURE</a></li>
 299 <li class="toctree-l2"><a class="reference internal" href="client_errors/MEMCACHED_CONNECTION_FAILURE.html">MEMCACHED_CONNECTION_FAILURE</a></li>
 300 <li class="toctree-l2"><a class="reference internal" href="client_errors/MEMCACHED_CONNECTION_SOCKET_CREATE_FAILURE.html">MEMCACHED_CONNECTION_SOCKET_CREATE_FAILURE</a></li>
 301 <li class="toctree-l2"><a class="reference internal" href="client_errors/MEMCACHED_DATA_DOES_NOT_EXIST.html">MEMCACHED_DATA_DOES_NOT_EXIST</a></li>
 302 <li class="toctree-l2"><a class="reference internal" href="client_errors/MEMCACHED_DATA_EXISTS.html">MEMCACHED_DATA_EXISTS</a></li>
 303 <li class="toctree-l2"><a class="reference internal" href="client_errors/MEMCACHED_DELETED.html">MEMCACHED_DELETED</a></li>
 304 <li class="toctree-l2"><a class="reference internal" href="client_errors/MEMCACHED_DEPRECATED.html">MEMCACHED_DEPRECATED</a></li>
 305 <li class="toctree-l2"><a class="reference internal" href="client_errors/MEMCACHED_E2BIG.html">MEMCACHED_E2BIG</a></li>
 306 <li class="toctree-l2"><a class="reference internal" href="client_errors/MEMCACHED_END.html">MEMCACHED_END</a></li>
 307 <li class="toctree-l2"><a class="reference internal" href="client_errors/MEMCACHED_ERRNO.html">MEMCACHED_ERRNO</a></li>
 308 <li class="toctree-l2"><a class="reference internal" href="client_errors/MEMCACHED_FAILURE.html">MEMCACHED_FAILURE</a></li>
 309 <li class="toctree-l2"><a class="reference internal" href="client_errors/MEMCACHED_FAIL_UNIX_SOCKET.html">MEMCACHED_FAIL_UNIX_SOCKET</a></li>
 310 <li class="toctree-l2"><a class="reference internal" href="client_errors/MEMCACHED_FETCH_NOTFINISHED.html">MEMCACHED_FETCH_NOTFINISHED</a></li>
 311 <li class="toctree-l2"><a class="reference internal" href="client_errors/MEMCACHED_HOST_LOOKUP_FAILURE.html">MEMCACHED_HOST_LOOKUP_FAILURE</a></li>
 312 <li class="toctree-l2"><a class="reference internal" href="client_errors/MEMCACHED_INVALID_ARGUMENTS.html">MEMCACHED_INVALID_ARGUMENTS</a></li>
 313 <li class="toctree-l2"><a class="reference internal" href="client_errors/MEMCACHED_INVALID_HOST_PROTOCOL.html">MEMCACHED_INVALID_HOST_PROTOCOL</a></li>
 314 <li class="toctree-l2"><a class="reference internal" href="client_errors/MEMCACHED_ITEM.html">MEMCACHED_ITEM</a></li>
 315 <li class="toctree-l2"><a class="reference internal" href="client_errors/MEMCACHED_KEY_TOO_BIG.html">MEMCACHED_KEY_TOO_BIG</a></li>
 316 <li class="toctree-l2"><a class="reference internal" href="client_errors/MEMCACHED_MAXIMUM_RETURN.html">MEMCACHED_MAXIMUM_RETURN</a></li>
 317 <li class="toctree-l2"><a class="reference internal" href="client_errors/MEMCACHED_MEMORY_ALLOCATION_FAILURE.html">MEMCACHED_MEMORY_ALLOCATION_FAILURE</a></li>
 318 <li class="toctree-l2"><a class="reference internal" href="client_errors/MEMCACHED_NOTFOUND.html">MEMCACHED_NOTFOUND</a></li>
 319 <li class="toctree-l2"><a class="reference internal" href="client_errors/MEMCACHED_NOTSTORED.html">MEMCACHED_NOTSTORED</a></li>
 320 <li class="toctree-l2"><a class="reference internal" href="client_errors/MEMCACHED_NOT_SUPPORTED.html">MEMCACHED_NOT_SUPPORTED</a></li>
 321 <li class="toctree-l2"><a class="reference internal" href="client_errors/MEMCACHED_NO_KEY_PROVIDED.html">MEMCACHED_NO_KEY_PROVIDED</a></li>
 322 <li class="toctree-l2"><a class="reference internal" href="client_errors/MEMCACHED_NO_SERVERS.html">MEMCACHED_NO_SERVERS</a></li>
 323 <li class="toctree-l2"><a class="reference internal" href="client_errors/MEMCACHED_PARSE_ERROR.html">MEMCACHED_PARSE_ERROR</a></li>
 324 <li class="toctree-l2"><a class="reference internal" href="client_errors/MEMCACHED_PARSE_USER_ERROR.html">MEMCACHED_PARSE_USER_ERROR</a></li>
 325 <li class="toctree-l2"><a class="reference internal" href="client_errors/MEMCACHED_PARTIAL_READ.html">MEMCACHED_PARTIAL_READ</a></li>
 326 <li class="toctree-l2"><a class="reference internal" href="client_errors/MEMCACHED_PROTOCOL_ERROR.html">MEMCACHED_PROTOCOL_ERROR</a></li>
 327 <li class="toctree-l2"><a class="reference internal" href="client_errors/MEMCACHED_READ_FAILURE.html">MEMCACHED_READ_FAILURE</a></li>
 328 <li class="toctree-l2"><a class="reference internal" href="client_errors/MEMCACHED_SERVER_ERROR.html">MEMCACHED_SERVER_ERROR</a></li>
 329 <li class="toctree-l2"><a class="reference internal" href="client_errors/MEMCACHED_SERVER_MARKED_DEAD.html">MEMCACHED_SERVER_MARKED_DEAD</a></li>
 330 <li class="toctree-l2"><a class="reference internal" href="client_errors/MEMCACHED_SOME_ERRORS.html">MEMCACHED_SOME_ERRORS</a></li>
 331 <li class="toctree-l2"><a class="reference internal" href="client_errors/MEMCACHED_STAT.html">MEMCACHED_STAT</a></li>
 332 <li class="toctree-l2"><a class="reference internal" href="client_errors/MEMCACHED_STORED.html">MEMCACHED_STORED</a></li>
 333 <li class="toctree-l2"><a class="reference internal" href="client_errors/MEMCACHED_SUCCESS.html">MEMCACHED_SUCCESS</a></li>
 334 <li class="toctree-l2"><a class="reference internal" href="client_errors/MEMCACHED_TIMEOUT.html">MEMCACHED_TIMEOUT</a></li>
 335 <li class="toctree-l2"><a class="reference internal" href="client_errors/MEMCACHED_UNKNOWN_READ_FAILURE.html">MEMCACHED_UNKNOWN_READ_FAILURE</a></li>
 336 <li class="toctree-l2"><a class="reference internal" href="client_errors/MEMCACHED_UNKNOWN_STAT_KEY.html">MEMCACHED_UNKNOWN_STAT_KEY</a></li>
 337 <li class="toctree-l2"><a class="reference internal" href="client_errors/MEMCACHED_VALUE.html">MEMCACHED_VALUE</a></li>
 338 <li class="toctree-l2"><a class="reference internal" href="client_errors/MEMCACHED_WRITE_FAILURE.html">MEMCACHED_WRITE_FAILURE</a></li>
 339 </ul>
 340 </li>
 341 <li class="toctree-l1"><a class="reference internal" href="memcached_user_data.html">Storing custom user information in the client.</a><ul>
 342 <li class="toctree-l2"><a class="reference internal" href="memcached_user_data.html#library">LIBRARY</a></li>
 343 <li class="toctree-l2"><a class="reference internal" href="memcached_user_data.html#synopsis">SYNOPSIS</a></li>
 344 <li class="toctree-l2"><a class="reference internal" href="memcached_user_data.html#description">DESCRIPTION</a></li>
 345 <li class="toctree-l2"><a class="reference internal" href="memcached_user_data.html#return">RETURN</a></li>
 346 <li class="toctree-l2"><a class="reference internal" href="memcached_user_data.html#see-also">SEE ALSO</a></li>
 347 </ul>
 348 </li>
 349 <li class="toctree-l1"><a class="reference internal" href="memcached_verbosity.html">Setting the verbosity of a server</a><ul>
 350 <li class="toctree-l2"><a class="reference internal" href="memcached_verbosity.html#synopsis">SYNOPSIS</a></li>
 351 <li class="toctree-l2"><a class="reference internal" href="memcached_verbosity.html#description">DESCRIPTION</a></li>
 352 <li class="toctree-l2"><a class="reference internal" href="memcached_verbosity.html#return">RETURN</a></li>
 353 <li class="toctree-l2"><a class="reference internal" href="memcached_verbosity.html#see-also">SEE ALSO</a></li>
 354 </ul>
 355 </li>
 356 <li class="toctree-l1"><a class="reference internal" href="memcached_version.html">Getting version information about the client and server</a><ul>
 357 <li class="toctree-l2"><a class="reference internal" href="memcached_version.html#synopsis">SYNOPSIS</a></li>
 358 <li class="toctree-l2"><a class="reference internal" href="memcached_version.html#description">DESCRIPTION</a></li>
 359 <li class="toctree-l2"><a class="reference internal" href="memcached_version.html#return">RETURN</a></li>
 360 <li class="toctree-l2"><a class="reference internal" href="memcached_version.html#see-also">SEE ALSO</a></li>
 361 </ul>
 362 </li>
 363 <li class="toctree-l1"><a class="reference internal" href="libmemcached/defaults.html">DEFAULTS</a></li>
 364 </ul>
 365 <p class="caption"><span class="caption-text">Interface Versions</span></p>
 366 <ul>
 367 <li class="toctree-l1"><a class="reference internal" href="libmemcached-1.0/index.html">libmemcached 1.0 API</a><ul>
 368 <li class="toctree-l2"><a class="reference internal" href="libmemcached-1.0/memcached_touch.html">memcached_touch, memcached_touch_by_key</a></li>
 369 </ul>
 370 </li>
 371 <li class="toctree-l1"><a class="reference internal" href="libmemcached-1.1/index.html">libmemcached 1.1 API</a></li>
 372 </ul>
 373 <p class="caption"><span class="caption-text">Deprecated Functions</span></p>
 374 <ul>
 375 <li class="toctree-l1"><a class="reference internal" href="libmemcached/memcached_fetch.html">memcached_fetch</a></li>
 376 </ul>
 377 <p class="caption"><span class="caption-text">Platform Specifics</span></p>
 378 <ul>
 379 <li class="toctree-l1"><a class="reference internal" href="tap.html">Systemtap support</a></li>
 380 <li class="toctree-l1"><a class="reference internal" href="types.html">Required C types</a><ul>
 381 <li class="toctree-l2"><a class="reference internal" href="types.html#types">Types</a></li>
 382 <li class="toctree-l2"><a class="reference internal" href="types.html#c-types-used">C Types Used</a></li>
 383 </ul>
 384 </li>
 385 </ul>
 386 <p class="caption"><span class="caption-text">Deriving Statistics from a Server</span></p>
 387 <ul>
 388 <li class="toctree-l1"><a class="reference internal" href="memcached_analyze.html">Analyzing servers</a><ul>
 389 <li class="toctree-l2"><a class="reference internal" href="memcached_analyze.html#synopsis">SYNOPSIS</a></li>
 390 <li class="toctree-l2"><a class="reference internal" href="memcached_analyze.html#description">DESCRIPTION</a></li>
 391 <li class="toctree-l2"><a class="reference internal" href="memcached_analyze.html#return">RETURN</a></li>
 392 <li class="toctree-l2"><a class="reference internal" href="memcached_analyze.html#see-also">SEE ALSO</a></li>
 393 </ul>
 394 </li>
 395 <li class="toctree-l1"><a class="reference internal" href="memcached_stats.html">Working with statistical information from a server</a><ul>
 396 <li class="toctree-l2"><a class="reference internal" href="memcached_stats.html#synopsis">SYNOPSIS</a></li>
 397 <li class="toctree-l2"><a class="reference internal" href="memcached_stats.html#description">DESCRIPTION</a></li>
 398 <li class="toctree-l2"><a class="reference internal" href="memcached_stats.html#return">RETURN</a></li>
 399 <li class="toctree-l2"><a class="reference internal" href="memcached_stats.html#see-also">SEE ALSO</a></li>
 400 </ul>
 401 </li>
 402 </ul>
 403 <p class="caption"><span class="caption-text">Libmemcachedutil</span></p>
 404 <ul>
 405 <li class="toctree-l1"><a class="reference internal" href="libmemcachedutil.html">Introducing libmemcachedutil</a><ul>
 406 <li class="toctree-l2"><a class="reference internal" href="libmemcachedutil.html#synopsis">SYNOPSIS</a></li>
 407 <li class="toctree-l2"><a class="reference internal" href="libmemcachedutil.html#description">DESCRIPTION</a></li>
 408 <li class="toctree-l2"><a class="reference internal" href="libmemcachedutil.html#threads">THREADS</a></li>
 409 <li class="toctree-l2"><a class="reference internal" href="libmemcachedutil.html#see-also">SEE ALSO</a></li>
 410 </ul>
 411 </li>
 412 <li class="toctree-l1"><a class="reference internal" href="memcached_pool.html">Working with memcached pools</a><ul>
 413 <li class="toctree-l2"><a class="reference internal" href="memcached_pool.html#synopsis">SYNOPSIS</a></li>
 414 <li class="toctree-l2"><a class="reference internal" href="memcached_pool.html#description">DESCRIPTION</a></li>
 415 <li class="toctree-l2"><a class="reference internal" href="memcached_pool.html#return">RETURN</a></li>
 416 <li class="toctree-l2"><a class="reference internal" href="memcached_pool.html#see-also">SEE ALSO</a></li>
 417 </ul>
 418 </li>
 419 </ul>
 420 <p class="caption"><span class="caption-text">Client Applications</span></p>
 421 <ul>
 422 <li class="toctree-l1"><a class="reference internal" href="bin/memcapable.html">memcapable - Checking a Memcached server capabilities and compatibility</a><ul>
 423 <li class="toctree-l2"><a class="reference internal" href="bin/memcapable.html#synopsis">SYNOPSIS</a></li>
 424 <li class="toctree-l2"><a class="reference internal" href="bin/memcapable.html#description">DESCRIPTION</a></li>
 425 <li class="toctree-l2"><a class="reference internal" href="bin/memcapable.html#limitations">LIMITATIONS</a></li>
 426 <li class="toctree-l2"><a class="reference internal" href="bin/memcapable.html#options">OPTIONS</a></li>
 427 <li class="toctree-l2"><a class="reference internal" href="bin/memcapable.html#see-also">SEE ALSO</a></li>
 428 </ul>
 429 </li>
 430 <li class="toctree-l1"><a class="reference internal" href="bin/memcat.html">memcat - “cat” data from a server</a><ul>
 431 <li class="toctree-l2"><a class="reference internal" href="bin/memcat.html#synopsis">SYNOPSIS</a></li>
 432 <li class="toctree-l2"><a class="reference internal" href="bin/memcat.html#description">DESCRIPTION</a></li>
 433 <li class="toctree-l2"><a class="reference internal" href="bin/memcat.html#options">OPTIONS</a></li>
 434 <li class="toctree-l2"><a class="reference internal" href="bin/memcat.html#see-also">SEE ALSO</a></li>
 435 </ul>
 436 </li>
 437 <li class="toctree-l1"><a class="reference internal" href="bin/memcp.html">memcp - Copy data to a server</a><ul>
 438 <li class="toctree-l2"><a class="reference internal" href="bin/memcp.html#synopsis">SYNOPSIS</a></li>
 439 <li class="toctree-l2"><a class="reference internal" href="bin/memcp.html#description">DESCRIPTION</a></li>
 440 <li class="toctree-l2"><a class="reference internal" href="bin/memcp.html#options">OPTIONS</a></li>
 441 <li class="toctree-l2"><a class="reference internal" href="bin/memcp.html#see-also">SEE ALSO</a></li>
 442 </ul>
 443 </li>
 444 <li class="toctree-l1"><a class="reference internal" href="bin/memdump.html">memdump - Dumping your server</a><ul>
 445 <li class="toctree-l2"><a class="reference internal" href="bin/memdump.html#synopsis">SYNOPSIS</a></li>
 446 <li class="toctree-l2"><a class="reference internal" href="bin/memdump.html#description">DESCRIPTION</a></li>
 447 <li class="toctree-l2"><a class="reference internal" href="bin/memdump.html#options">OPTIONS</a></li>
 448 <li class="toctree-l2"><a class="reference internal" href="bin/memdump.html#see-also">SEE ALSO</a></li>
 449 </ul>
 450 </li>
 451 <li class="toctree-l1"><a class="reference internal" href="bin/memerror.html">memerror - translate an error code to a string</a><ul>
 452 <li class="toctree-l2"><a class="reference internal" href="bin/memerror.html#synopsis">SYNOPSIS</a></li>
 453 <li class="toctree-l2"><a class="reference internal" href="bin/memerror.html#description">DESCRIPTION</a></li>
 454 <li class="toctree-l2"><a class="reference internal" href="bin/memerror.html#options">OPTIONS</a></li>
 455 <li class="toctree-l2"><a class="reference internal" href="bin/memerror.html#see-also">SEE ALSO</a></li>
 456 </ul>
 457 </li>
 458 <li class="toctree-l1"><a class="reference internal" href="bin/memflush.html">memflush - flush all data from a server</a><ul>
 459 <li class="toctree-l2"><a class="reference internal" href="bin/memflush.html#synopsis">SYNOPSIS</a></li>
 460 <li class="toctree-l2"><a class="reference internal" href="bin/memflush.html#description">DESCRIPTION</a></li>
 461 <li class="toctree-l2"><a class="reference internal" href="bin/memflush.html#options">OPTIONS</a></li>
 462 <li class="toctree-l2"><a class="reference internal" href="bin/memflush.html#see-also">SEE ALSO</a></li>
 463 </ul>
 464 </li>
 465 <li class="toctree-l1"><a class="reference internal" href="bin/memrm.html">memrm - Remove data from a server</a><ul>
 466 <li class="toctree-l2"><a class="reference internal" href="bin/memrm.html#synopsis">SYNOPSIS</a></li>
 467 <li class="toctree-l2"><a class="reference internal" href="bin/memrm.html#description">DESCRIPTION</a></li>
 468 <li class="toctree-l2"><a class="reference internal" href="bin/memrm.html#options">OPTIONS</a></li>
 469 <li class="toctree-l2"><a class="reference internal" href="bin/memrm.html#see-also">SEE ALSO</a></li>
 470 </ul>
 471 </li>
 472 <li class="toctree-l1"><a class="reference internal" href="bin/memslap.html">memslap - Load testing  and benchmarking a server</a><ul>
 473 <li class="toctree-l2"><a class="reference internal" href="bin/memslap.html#synopsis">SYNOPSIS</a></li>
 474 <li class="toctree-l2"><a class="reference internal" href="bin/memslap.html#description">DESCRIPTION</a></li>
 475 <li class="toctree-l2"><a class="reference internal" href="bin/memslap.html#options">OPTIONS</a></li>
 476 <li class="toctree-l2"><a class="reference internal" href="bin/memslap.html#see-also">SEE ALSO</a></li>
 477 </ul>
 478 </li>
 479 <li class="toctree-l1"><a class="reference internal" href="bin/memaslap.html">memaslap - Load testing  and benchmarking a server</a><ul>
 480 <li class="toctree-l2"><a class="reference internal" href="bin/memaslap.html#synopsis">SYNOPSIS</a></li>
 481 <li class="toctree-l2"><a class="reference internal" href="bin/memaslap.html#description">DESCRIPTION</a></li>
 482 <li class="toctree-l2"><a class="reference internal" href="bin/memaslap.html#features">FEATURES</a></li>
 483 <li class="toctree-l2"><a class="reference internal" href="bin/memaslap.html#details">DETAILS</a></li>
 484 <li class="toctree-l2"><a class="reference internal" href="bin/memaslap.html#usage">USAGE</a></li>
 485 <li class="toctree-l2"><a class="reference internal" href="bin/memaslap.html#configuration-file">Configuration file</a></li>
 486 <li class="toctree-l2"><a class="reference internal" href="bin/memaslap.html#format-of-output">Format of output</a></li>
 487 <li class="toctree-l2"><a class="reference internal" href="bin/memaslap.html#options">OPTIONS</a></li>
 488 <li class="toctree-l2"><a class="reference internal" href="bin/memaslap.html#examples">EXAMPLES</a></li>
 489 <li class="toctree-l2"><a class="reference internal" href="bin/memaslap.html#see-also">SEE ALSO</a></li>
 490 </ul>
 491 </li>
 492 <li class="toctree-l1"><a class="reference internal" href="bin/memstat.html">memstat - Gather statistics from a server</a><ul>
 493 <li class="toctree-l2"><a class="reference internal" href="bin/memstat.html#synopsis">SYNOPSIS</a></li>
 494 <li class="toctree-l2"><a class="reference internal" href="bin/memstat.html#description">DESCRIPTION</a></li>
 495 <li class="toctree-l2"><a class="reference internal" href="bin/memstat.html#options">OPTIONS</a></li>
 496 <li class="toctree-l2"><a class="reference internal" href="bin/memstat.html#see-also">SEE ALSO</a></li>
 497 </ul>
 498 </li>
 499 <li class="toctree-l1"><a class="reference internal" href="bin/memexist.html">memexist - Check for the existence of a key</a><ul>
 500 <li class="toctree-l2"><a class="reference internal" href="bin/memexist.html#synopsis">SYNOPSIS</a></li>
 501 <li class="toctree-l2"><a class="reference internal" href="bin/memexist.html#description">DESCRIPTION</a></li>
 502 <li class="toctree-l2"><a class="reference internal" href="bin/memexist.html#options">OPTIONS</a></li>
 503 <li class="toctree-l2"><a class="reference internal" href="bin/memexist.html#see-also">SEE ALSO</a></li>
 504 </ul>
 505 </li>
 506 <li class="toctree-l1"><a class="reference internal" href="bin/memparse.html">memparse - Parse an option string</a><ul>
 507 <li class="toctree-l2"><a class="reference internal" href="bin/memparse.html#synopsis">SYNOPSIS</a></li>
 508 <li class="toctree-l2"><a class="reference internal" href="bin/memparse.html#description">DESCRIPTION</a></li>
 509 <li class="toctree-l2"><a class="reference internal" href="bin/memparse.html#options">OPTIONS</a></li>
 510 <li class="toctree-l2"><a class="reference internal" href="bin/memparse.html#see-also">SEE ALSO</a></li>
 511 </ul>
 512 </li>
 513 <li class="toctree-l1"><a class="reference internal" href="bin/memping.html">memping - Test to see if a server is available.</a><ul>
 514 <li class="toctree-l2"><a class="reference internal" href="bin/memping.html#synopsis">SYNOPSIS</a></li>
 515 <li class="toctree-l2"><a class="reference internal" href="bin/memping.html#description">DESCRIPTION</a></li>
 516 <li class="toctree-l2"><a class="reference internal" href="bin/memping.html#options">OPTIONS</a></li>
 517 <li class="toctree-l2"><a class="reference internal" href="bin/memping.html#see-also">SEE ALSO</a></li>
 518 </ul>
 519 </li>
 520 <li class="toctree-l1"><a class="reference internal" href="bin/memtouch.html">memtouch - Touches a key.</a><ul>
 521 <li class="toctree-l2"><a class="reference internal" href="bin/memtouch.html#synopsis">SYNOPSIS</a></li>
 522 <li class="toctree-l2"><a class="reference internal" href="bin/memtouch.html#description">DESCRIPTION</a></li>
 523 <li class="toctree-l2"><a class="reference internal" href="bin/memtouch.html#options">OPTIONS</a></li>
 524 <li class="toctree-l2"><a class="reference internal" href="bin/memtouch.html#see-also">SEE ALSO</a></li>
 525 </ul>
 526 </li>
 527 </ul>
 528 <p class="caption"><span class="caption-text">Libhashkit</span></p>
 529 <ul>
 530 <li class="toctree-l1"><a class="reference internal" href="libhashkit.html">Introducing libhashkit</a><ul>
 531 <li class="toctree-l2"><a class="reference internal" href="libhashkit.html#description">DESCRIPTION</a></li>
 532 <li class="toctree-l2"><a class="reference internal" href="libhashkit.html#see-also">SEE ALSO</a></li>
 533 </ul>
 534 </li>
 535 <li class="toctree-l1"><a class="reference internal" href="hashkit_create.html">Creating a hashkit structure</a><ul>
 536 <li class="toctree-l2"><a class="reference internal" href="hashkit_create.html#synopsis">SYNOPSIS</a></li>
 537 <li class="toctree-l2"><a class="reference internal" href="hashkit_create.html#description">DESCRIPTION</a></li>
 538 <li class="toctree-l2"><a class="reference internal" href="hashkit_create.html#return-value">RETURN VALUE</a></li>
 539 <li class="toctree-l2"><a class="reference internal" href="hashkit_create.html#see-also">SEE ALSO</a></li>
 540 </ul>
 541 </li>
 542 <li class="toctree-l1"><a class="reference internal" href="hashkit_functions.html">Available Hashes</a><ul>
 543 <li class="toctree-l2"><a class="reference internal" href="hashkit_functions.html#synopsis">SYNOPSIS</a></li>
 544 <li class="toctree-l2"><a class="reference internal" href="hashkit_functions.html#description">DESCRIPTION</a></li>
 545 <li class="toctree-l2"><a class="reference internal" href="hashkit_functions.html#return-value">RETURN VALUE</a></li>
 546 <li class="toctree-l2"><a class="reference internal" href="hashkit_functions.html#see-also">SEE ALSO</a></li>
 547 </ul>
 548 </li>
 549 <li class="toctree-l1"><a class="reference internal" href="hashkit_value.html">hashkit_value</a><ul>
 550 <li class="toctree-l2"><a class="reference internal" href="hashkit_value.html#synopsis">SYNOPSIS</a></li>
 551 <li class="toctree-l2"><a class="reference internal" href="hashkit_value.html#description">DESCRIPTION</a></li>
 552 <li class="toctree-l2"><a class="reference internal" href="hashkit_value.html#return-value">RETURN VALUE</a></li>
 553 <li class="toctree-l2"><a class="reference internal" href="hashkit_value.html#see-also">SEE ALSO</a></li>
 554 </ul>
 555 </li>
 556 </ul>
 557
 558
 559
 560         </div>
 561       </div>
 562     </nav>
 563
 564     <section data-toggle="wy-nav-shift" class="wy-nav-content-wrap">
 565
 566
 567       <nav class="wy-nav-top" aria-label="top navigation">
 568
 569           <i data-toggle="wy-nav-top" class="fa fa-bars"></i>
 570           <a href="index.html">libmemcached</a>
 571
 572       </nav>
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 601       <li>Incrementing and Decrementing Values</li>
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 619 <h1>Incrementing and Decrementing Values<a class="headerlink" href="#incrementing-and-decrementing-values" title="Permalink to this headline">¶</a></h1>
 620 <div class="section" id="synopsis">
 621 <span id="index-0"></span><h2>SYNOPSIS<a class="headerlink" href="#synopsis" title="Permalink to this headline">¶</a></h2>
 622 <p>#include &lt;libmemcached/memcached.h&gt;</p>
 623 <dl class="function">
 624 <dt id="c.memcached_increment">
 625 <a class="reference internal" href="libmemcached/memcached_return_t.html#c.memcached_return_t" title="memcached_return_t">memcached_return_t</a> <code class="sig-name descname">memcached_increment</code><span class="sig-paren">(</span><a class="reference internal" href="memcached_create.html#c.memcached_st" title="memcached_st">memcached_st</a><em> *ptr</em>, const char<em> *key</em>, size_t<em> key_length</em>, <a class="reference internal" href="types.html#c.uint32_t" title="uint32_t">uint32_t</a><em> offset</em>, <a class="reference internal" href="types.html#c.uint64_t" title="uint64_t">uint64_t</a><em> *value</em><span class="sig-paren">)</span><a class="headerlink" href="#c.memcached_increment" title="Permalink to this definition">¶</a></dt>
 626 <dd></dd></dl>
 627
 628 <dl class="function">
 629 <dt id="c.memcached_decrement">
 630 <a class="reference internal" href="libmemcached/memcached_return_t.html#c.memcached_return_t" title="memcached_return_t">memcached_return_t</a> <code class="sig-name descname">memcached_decrement</code><span class="sig-paren">(</span><a class="reference internal" href="memcached_create.html#c.memcached_st" title="memcached_st">memcached_st</a><em> *ptr</em>, const char<em> *key</em>, size_t<em> key_length</em>, <a class="reference internal" href="types.html#c.uint32_t" title="uint32_t">uint32_t</a><em> offset</em>, <a class="reference internal" href="types.html#c.uint64_t" title="uint64_t">uint64_t</a><em> *value</em><span class="sig-paren">)</span><a class="headerlink" href="#c.memcached_decrement" title="Permalink to this definition">¶</a></dt>
 631 <dd></dd></dl>
 632
 633 <dl class="function">
 634 <dt id="c.memcached_increment_with_initial">
 635 <a class="reference internal" href="libmemcached/memcached_return_t.html#c.memcached_return_t" title="memcached_return_t">memcached_return_t</a> <code class="sig-name descname">memcached_increment_with_initial</code><span class="sig-paren">(</span><a class="reference internal" href="memcached_create.html#c.memcached_st" title="memcached_st">memcached_st</a><em> *ptr</em>, const char<em> *key</em>, size_t<em> key_length</em>, <a class="reference internal" href="types.html#c.uint64_t" title="uint64_t">uint64_t</a><em> offset</em>, <a class="reference internal" href="types.html#c.uint64_t" title="uint64_t">uint64_t</a><em> initial</em>, time_t<em> expiration</em>, <a class="reference internal" href="types.html#c.uint64_t" title="uint64_t">uint64_t</a><em> *value</em><span class="sig-paren">)</span><a class="headerlink" href="#c.memcached_increment_with_initial" title="Permalink to this definition">¶</a></dt>
 636 <dd></dd></dl>
 637
 638 <dl class="function">
 639 <dt id="c.memcached_decrement_with_initial">
 640 <a class="reference internal" href="libmemcached/memcached_return_t.html#c.memcached_return_t" title="memcached_return_t">memcached_return_t</a> <code class="sig-name descname">memcached_decrement_with_initial</code><span class="sig-paren">(</span><a class="reference internal" href="memcached_create.html#c.memcached_st" title="memcached_st">memcached_st</a><em> *ptr</em>, const char<em> *key</em>, size_t<em> key_length</em>, <a class="reference internal" href="types.html#c.uint64_t" title="uint64_t">uint64_t</a><em> offset</em>, <a class="reference internal" href="types.html#c.uint64_t" title="uint64_t">uint64_t</a><em> initial</em>, time_t<em> expiration</em>, <a class="reference internal" href="types.html#c.uint64_t" title="uint64_t">uint64_t</a><em> *value</em><span class="sig-paren">)</span><a class="headerlink" href="#c.memcached_decrement_with_initial" title="Permalink to this definition">¶</a></dt>
 641 <dd></dd></dl>
 642
 643 <dl class="function">
 644 <dt id="c.memcached_increment_by_key">
 645 <a class="reference internal" href="libmemcached/memcached_return_t.html#c.memcached_return_t" title="memcached_return_t">memcached_return_t</a> <code class="sig-name descname">memcached_increment_by_key</code><span class="sig-paren">(</span><a class="reference internal" href="memcached_create.html#c.memcached_st" title="memcached_st">memcached_st</a><em> *ptr</em>, const char<em> *group_key</em>, size_t<em> group_key_length</em>, const char<em> *key</em>, size_t<em> key_length</em>, <a class="reference internal" href="types.html#c.uint32_t" title="uint32_t">uint32_t</a><em> offset</em>, <a class="reference internal" href="types.html#c.uint64_t" title="uint64_t">uint64_t</a><em> *value</em><span class="sig-paren">)</span><a class="headerlink" href="#c.memcached_increment_by_key" title="Permalink to this definition">¶</a></dt>
 646 <dd></dd></dl>
 647
 648 <dl class="function">
 649 <dt id="c.memcached_decrement_by_key">
 650 <a class="reference internal" href="libmemcached/memcached_return_t.html#c.memcached_return_t" title="memcached_return_t">memcached_return_t</a> <code class="sig-name descname">memcached_decrement_by_key</code><span class="sig-paren">(</span><a class="reference internal" href="memcached_create.html#c.memcached_st" title="memcached_st">memcached_st</a><em> *ptr</em>, const char<em> *group_key</em>, size_t<em> group_key_length</em>, const char<em> *key</em>, size_t<em> key_length</em>, <a class="reference internal" href="types.html#c.uint32_t" title="uint32_t">uint32_t</a><em> offset</em>, <a class="reference internal" href="types.html#c.uint64_t" title="uint64_t">uint64_t</a><em> *value</em><span class="sig-paren">)</span><a class="headerlink" href="#c.memcached_decrement_by_key" title="Permalink to this definition">¶</a></dt>
 651 <dd></dd></dl>
 652
 653 <dl class="function">
 654 <dt id="c.memcached_increment_with_initial_by_key">
 655 <a class="reference internal" href="libmemcached/memcached_return_t.html#c.memcached_return_t" title="memcached_return_t">memcached_return_t</a> <code class="sig-name descname">memcached_increment_with_initial_by_key</code><span class="sig-paren">(</span><a class="reference internal" href="memcached_create.html#c.memcached_st" title="memcached_st">memcached_st</a><em> *ptr</em>, const char<em> *group_key</em>, size_t<em> group_key_length</em>, const char<em> *key</em>, size_t<em> key_length</em>, <a class="reference internal" href="types.html#c.uint64_t" title="uint64_t">uint64_t</a><em> offset</em>, <a class="reference internal" href="types.html#c.uint64_t" title="uint64_t">uint64_t</a><em> initial</em>, time_t<em> expiration</em>, <a class="reference internal" href="types.html#c.uint64_t" title="uint64_t">uint64_t</a><em> *value</em><span class="sig-paren">)</span><a class="headerlink" href="#c.memcached_increment_with_initial_by_key" title="Permalink to this definition">¶</a></dt>
 656 <dd></dd></dl>
 657
 658 <dl class="function">
 659 <dt id="c.memcached_decrement_with_initial_by_key">
 660 <a class="reference internal" href="libmemcached/memcached_return_t.html#c.memcached_return_t" title="memcached_return_t">memcached_return_t</a> <code class="sig-name descname">memcached_decrement_with_initial_by_key</code><span class="sig-paren">(</span><a class="reference internal" href="memcached_create.html#c.memcached_st" title="memcached_st">memcached_st</a><em> *ptr</em>, const char<em> *group_key</em>, size_t<em> group_key_length</em>, const char<em> *key</em>, size_t<em> key_length</em>, <a class="reference internal" href="types.html#c.uint64_t" title="uint64_t">uint64_t</a><em> offset</em>, <a class="reference internal" href="types.html#c.uint64_t" title="uint64_t">uint64_t</a><em> initial</em>, time_t<em> expiration</em>, <a class="reference internal" href="types.html#c.uint64_t" title="uint64_t">uint64_t</a><em> *value</em><span class="sig-paren">)</span><a class="headerlink" href="#c.memcached_decrement_with_initial_by_key" title="Permalink to this definition">¶</a></dt>
 661 <dd></dd></dl>
 662
 663 <p>Compile and link with -lmemcached</p>
 664 </div>
 665 <div class="section" id="description">
 666 <h2>DESCRIPTION<a class="headerlink" href="#description" title="Permalink to this headline">¶</a></h2>
 667 <p><em class="manpage">memcached(1)</em> servers have the ability to increment and decrement keys
 668 (overflow and underflow are not detected). This gives you the ability to use
 669 memcached to generate shared sequences of values.</p>
 670 <p>memcached_increment takes a key and key length and increments the value by
 671 the offset passed to it. The value is then returned via the uint32_t
 672 value pointer you pass to it.</p>
 673 <p>memcached_decrement takes a key and keylength and decrements the value by
 674 the offset passed to it. The value is then returned via the uint32_t
 675 value pointer you pass to it.</p>
 676 <p>memcached_increment_with_initial takes a key and keylength and increments
 677 the value by the offset passed to it. If the object specified by key does
 678 not exist, one of two things may happen: If the expiration value is
 679 MEMCACHED_EXPIRATION_NOT_ADD, the operation will fail. For all other
 680 expiration values, the operation will succeed by seeding the value for that
 681 key with a initial value to expire with the provided expiration time. The
 682 flags will be set to zero.The value is then returned via the uint32_t
 683 value pointer you pass to it. memcached_increment_with_initial is only available
 684 when using the binary protocol.</p>
 685 <p>memcached_decrement_with_initial takes a key and keylength and decrements
 686 the value by the offset passed to it. If the object specified by key does
 687 not exist, one of two things may happen: If the expiration value is
 688 MEMCACHED_EXPIRATION_NOT_ADD, the operation will fail. For all other
 689 expiration values, the operation will succeed by seeding the value for that
 690 key with a initial value to expire with the provided expiration time. The
 691 flags will be set to zero.The value is then returned via the uint32_t
 692 value pointer you pass to it. memcached_decrement_with_initial is only available
 693 when using the binary protocol.</p>
 694 <p><a class="reference internal" href="#c.memcached_increment_by_key" title="memcached_increment_by_key"><code class="xref c c-func docutils literal notranslate"><span class="pre">memcached_increment_by_key()</span></code></a>, <a class="reference internal" href="#c.memcached_decrement_by_key" title="memcached_decrement_by_key"><code class="xref c c-func docutils literal notranslate"><span class="pre">memcached_decrement_by_key()</span></code></a>,
 695 <a class="reference internal" href="#c.memcached_increment_with_initial_by_key" title="memcached_increment_with_initial_by_key"><code class="xref c c-func docutils literal notranslate"><span class="pre">memcached_increment_with_initial_by_key()</span></code></a>, and
 696 <a class="reference internal" href="#c.memcached_decrement_with_initial_by_key" title="memcached_decrement_with_initial_by_key"><code class="xref c c-func docutils literal notranslate"><span class="pre">memcached_decrement_with_initial_by_key()</span></code></a> are master key equivalents of the above.</p>
 697 </div>
 698 <div class="section" id="return">
 699 <h2>RETURN<a class="headerlink" href="#return" title="Permalink to this headline">¶</a></h2>
 700 <p>A value of type <a class="reference internal" href="libmemcached/memcached_return_t.html#c.memcached_return_t" title="memcached_return_t"><code class="xref c c-type docutils literal notranslate"><span class="pre">memcached_return_t</span></code></a>  is returned.
 701 On success that value will be <a class="reference internal" href="client_errors/MEMCACHED_SUCCESS.html#c.MEMCACHED_SUCCESS" title="MEMCACHED_SUCCESS"><code class="xref c c-type docutils literal notranslate"><span class="pre">MEMCACHED_SUCCESS</span></code></a>.
 702 Use memcached_strerror to translate this value to a printable string.</p>
 703 </div>
 704 <div class="section" id="see-also">
 705 <h2>SEE ALSO<a class="headerlink" href="#see-also" title="Permalink to this headline">¶</a></h2>
 706 <p><em class="manpage">memcached(1)</em> <em class="manpage">libmemcached(3)</em> <em class="manpage">memcached_strerror(3)</em></p>
 707 </div>
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