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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"><a class="reference internal" href="memcached_auto.html">Incrementing and Decrementing Values</a><ul>
 135 <li class="toctree-l2"><a class="reference internal" href="memcached_auto.html#synopsis">SYNOPSIS</a></li>
 136 <li class="toctree-l2"><a class="reference internal" href="memcached_auto.html#description">DESCRIPTION</a></li>
 137 <li class="toctree-l2"><a class="reference internal" href="memcached_auto.html#return">RETURN</a></li>
 138 <li class="toctree-l2"><a class="reference internal" href="memcached_auto.html#see-also">SEE ALSO</a></li>
 139 </ul>
 140 </li>
 141 <li class="toctree-l1 current"><a class="current reference internal" href="#">Deleting data from a server</a><ul>
 142 <li class="toctree-l2"><a class="reference internal" href="#synopsis">SYNOPSIS</a></li>
 143 <li class="toctree-l2"><a class="reference internal" href="#description">DESCRIPTION</a></li>
 144 <li class="toctree-l2"><a class="reference internal" href="#return">RETURN</a></li>
 145 <li class="toctree-l2"><a class="reference internal" href="#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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 618   <div class="section" id="deleting-data-from-a-server">
 619 <h1>Deleting data from a server<a class="headerlink" href="#deleting-data-from-a-server" 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_delete">
 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_delete</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>, time_t<em> expiration</em><span class="sig-paren">)</span><a class="headerlink" href="#c.memcached_delete" title="Permalink to this definition">¶</a></dt>
 626 <dd></dd></dl>
 627
 628 <dl class="function">
 629 <dt id="c.memcached_delete_by_key">
 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_delete_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>, time_t<em> expiration</em><span class="sig-paren">)</span><a class="headerlink" href="#c.memcached_delete_by_key" title="Permalink to this definition">¶</a></dt>
 631 <dd></dd></dl>
 632
 633 <p>Compile and link with -lmemcached</p>
 634 </div>
 635 <div class="section" id="description">
 636 <h2>DESCRIPTION<a class="headerlink" href="#description" title="Permalink to this headline">¶</a></h2>
 637 <p><a class="reference internal" href="#c.memcached_delete" title="memcached_delete"><code class="xref c c-func docutils literal notranslate"><span class="pre">memcached_delete()</span></code></a> is used to delete a particular key.
 638 <a class="reference internal" href="#c.memcached_delete_by_key" title="memcached_delete_by_key"><code class="xref c c-func docutils literal notranslate"><span class="pre">memcached_delete_by_key()</span></code></a> works the same, but it takes a master key
 639 to find the given value.</p>
 640 <p>Expiration works by placing the item into a delete queue, which means that
 641 it won’t be possible to retrieve it by the “get” command. The “add” and
 642 “replace” commands with this key will also fail (the “set” command will
 643 succeed, however). After the time passes, the item is finally deleted from server memory.</p>
 644 <p>Please note the the memcached server removed tests for expiration in
 645 the 1.4 version.</p>
 646 </div>
 647 <div class="section" id="return">
 648 <h2>RETURN<a class="headerlink" href="#return" title="Permalink to this headline">¶</a></h2>
 649 <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
 650 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>.
 651 Use <a class="reference internal" href="memcached_strerror.html#c.memcached_strerror" title="memcached_strerror"><code class="xref c c-func docutils literal notranslate"><span class="pre">memcached_strerror()</span></code></a> to translate this value to a printable
 652 string.</p>
 653 <p>If you are using the non-blocking mode of the library, success only
 654 means that the message was queued for delivery.</p>
 655 </div>
 656 <div class="section" id="see-also">
 657 <h2>SEE ALSO<a class="headerlink" href="#see-also" title="Permalink to this headline">¶</a></h2>
 658 <p><em class="manpage">memcached(1)</em> <em class="manpage">libmemcached(3)</em> <em class="manpage">memcached_strerror(3)</em></p>
 659 </div>
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