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 172
 173   <div class="section" id="libmemcached-constants-and-defaults">
 174 <h1>libmemcached Constants and Defaults<a class="headerlink" href="#libmemcached-constants-and-defaults" title="Permalink to this headline">¶</a></h1>
 175 <div class="section" id="synopsis">
 176 <h2>SYNOPSIS<a class="headerlink" href="#synopsis" title="Permalink to this headline">¶</a></h2>
 177 <dl class="docutils">
 178 <dt>#include &lt;libmemcached-1/memcached.h&gt;</dt>
 179 <dd>Compile and link with -lmemcached</dd>
 180 </dl>
 181 <dl class="macro">
 182 <dt id="c.LIBMEMCACHED_VERSION_STRING">
 183 <code class="descname">LIBMEMCACHED_VERSION_STRING</code><a class="headerlink" href="#c.LIBMEMCACHED_VERSION_STRING" title="Permalink to this definition">¶</a></dt>
 184 <dd><p>String value of libmemcached version such as &quot;1.1.0&quot;</p>
 185 </dd></dl>
 186
 187 <dl class="macro">
 188 <dt id="c.LIBMEMCACHED_VERSION_HEX">
 189 <code class="descname">LIBMEMCACHED_VERSION_HEX</code><a class="headerlink" href="#c.LIBMEMCACHED_VERSION_HEX" title="Permalink to this definition">¶</a></dt>
 190 <dd><p>Hex value of the version number, e.g. &quot;0x00048000&quot;.
 191 This can be used for comparing versions based on number.</p>
 192 </dd></dl>
 193
 194 <dl class="macro">
 195 <dt id="c.MEMCACHED_DEFAULT_PORT">
 196 <code class="descname">MEMCACHED_DEFAULT_PORT</code><a class="headerlink" href="#c.MEMCACHED_DEFAULT_PORT" title="Permalink to this definition">¶</a></dt>
 197 <dd><p>The default port used by <a class="reference internal" href="configuration.html#_CPPv49memcachedPKc6size_t" title="memcached"><code class="xref cpp cpp-any docutils literal notranslate"><span class="pre">memcached()</span></code></a>.</p>
 198 </dd></dl>
 199
 200 <dl class="macro">
 201 <dt id="c.MEMCACHED_DEFAULT_TIMEOUT">
 202 <code class="descname">MEMCACHED_DEFAULT_TIMEOUT</code><a class="headerlink" href="#c.MEMCACHED_DEFAULT_TIMEOUT" title="Permalink to this definition">¶</a></dt>
 203 <dd><p>Default timeout of 5000 milliseconds.</p>
 204 </dd></dl>
 205
 206 <dl class="macro">
 207 <dt id="c.MEMCACHED_DEFAULT_CONNECT_TIMEOUT">
 208 <code class="descname">MEMCACHED_DEFAULT_CONNECT_TIMEOUT</code><a class="headerlink" href="#c.MEMCACHED_DEFAULT_CONNECT_TIMEOUT" title="Permalink to this definition">¶</a></dt>
 209 <dd><p>Default connect timeout of 4000 milliseconds.</p>
 210 </dd></dl>
 211
 212 <dl class="macro">
 213 <dt id="c.MEMCACHED_MAX_BUFFER">
 214 <code class="descname">MEMCACHED_MAX_BUFFER</code><a class="headerlink" href="#c.MEMCACHED_MAX_BUFFER" title="Permalink to this definition">¶</a></dt>
 215 <dd><p>Default size of read/write buffers (which includes the null pointer).</p>
 216 </dd></dl>
 217
 218 <dl class="macro">
 219 <dt id="c.MEMCACHED_MAX_KEY">
 220 <code class="descname">MEMCACHED_MAX_KEY</code><a class="headerlink" href="#c.MEMCACHED_MAX_KEY" title="Permalink to this definition">¶</a></dt>
 221 <dd><p>Default maximum size of a key (which includes the null pointer). Master keys
 222 have no limit, this only applies to keys used for storage.</p>
 223 </dd></dl>
 224
 225 <dl class="macro">
 226 <dt id="c.MEMCACHED_MAX_NAMESPACE">
 227 <code class="descname">MEMCACHED_MAX_NAMESPACE</code><a class="headerlink" href="#c.MEMCACHED_MAX_NAMESPACE" title="Permalink to this definition">¶</a></dt>
 228 <dd><p>Maximum length allowed for namespacing of a key. Defaults to 128.</p>
 229 </dd></dl>
 230
 231 <dl class="macro">
 232 <dt id="c.MEMCACHED_MAX_HOST_LENGTH">
 233 <code class="descname">MEMCACHED_MAX_HOST_LENGTH</code><a class="headerlink" href="#c.MEMCACHED_MAX_HOST_LENGTH" title="Permalink to this definition">¶</a></dt>
 234 <dd><p>Maximum allowed length of the hostname.</p>
 235 </dd></dl>
 236
 237 <dl class="macro">
 238 <dt id="c.MEMCACHED_MAX_HOST_SORT_LENGTH">
 239 <code class="descname">MEMCACHED_MAX_HOST_SORT_LENGTH</code><a class="headerlink" href="#c.MEMCACHED_MAX_HOST_SORT_LENGTH" title="Permalink to this definition">¶</a></dt>
 240 <dd><p>Length of the host string used for sorting. Used for Ketama.</p>
 241 </dd></dl>
 242
 243 <dl class="macro">
 244 <dt id="c.MEMCACHED_MAX_INTEGER_DISPLAY_LENGTH">
 245 <code class="descname">MEMCACHED_MAX_INTEGER_DISPLAY_LENGTH</code><a class="headerlink" href="#c.MEMCACHED_MAX_INTEGER_DISPLAY_LENGTH" title="Permalink to this definition">¶</a></dt>
 246 <dd><p>Maximum display width of an integer represented as string.</p>
 247 </dd></dl>
 248
 249 <dl class="macro">
 250 <dt id="c.MEMCACHED_CONTINUUM_ADDITION">
 251 <code class="descname">MEMCACHED_CONTINUUM_ADDITION</code><a class="headerlink" href="#c.MEMCACHED_CONTINUUM_ADDITION" title="Permalink to this definition">¶</a></dt>
 252 <dd><p>How many extra slots we should build for in the continuum, defaults to 10.</p>
 253 </dd></dl>
 254
 255 <dl class="macro">
 256 <dt id="c.MEMCACHED_EXPIRATION_NOT_ADD">
 257 <code class="descname">MEMCACHED_EXPIRATION_NOT_ADD</code><a class="headerlink" href="#c.MEMCACHED_EXPIRATION_NOT_ADD" title="Permalink to this definition">¶</a></dt>
 258 <dd><p>Value <code class="docutils literal notranslate"><span class="pre">0xffffffffU</span></code></p>
 259 </dd></dl>
 260
 261 <dl class="macro">
 262 <dt id="c.MEMCACHED_STRIDE">
 263 <code class="descname">MEMCACHED_STRIDE</code><a class="headerlink" href="#c.MEMCACHED_STRIDE" title="Permalink to this definition">¶</a></dt>
 264 <dd><p>This is the &quot;stride&quot; used in the consistent hash used between replicas.</p>
 265 </dd></dl>
 266
 267 <dl class="macro">
 268 <dt id="c.MEMCACHED_SERVER_FAILURE_LIMIT">
 269 <code class="descname">MEMCACHED_SERVER_FAILURE_LIMIT</code><a class="headerlink" href="#c.MEMCACHED_SERVER_FAILURE_LIMIT" title="Permalink to this definition">¶</a></dt>
 270 <dd><p>Value 5</p>
 271 </dd></dl>
 272
 273 <dl class="macro">
 274 <dt id="c.MEMCACHED_SERVER_FAILURE_RETRY_TIMEOUT">
 275 <code class="descname">MEMCACHED_SERVER_FAILURE_RETRY_TIMEOUT</code><a class="headerlink" href="#c.MEMCACHED_SERVER_FAILURE_RETRY_TIMEOUT" title="Permalink to this definition">¶</a></dt>
 276 <dd><p>Value 2</p>
 277 </dd></dl>
 278
 279 <dl class="macro">
 280 <dt id="c.MEMCACHED_SERVER_FAILURE_DEAD_TIMEOUT">
 281 <code class="descname">MEMCACHED_SERVER_FAILURE_DEAD_TIMEOUT</code><a class="headerlink" href="#c.MEMCACHED_SERVER_FAILURE_DEAD_TIMEOUT" title="Permalink to this definition">¶</a></dt>
 282 <dd><p>Value 0</p>
 283 </dd></dl>
 284
 285 <dl class="macro">
 286 <dt id="c.MEMCACHED_VERSION_STRING_LENGTH">
 287 <code class="descname">MEMCACHED_VERSION_STRING_LENGTH</code><a class="headerlink" href="#c.MEMCACHED_VERSION_STRING_LENGTH" title="Permalink to this definition">¶</a></dt>
 288 <dd><p>Value 24</p>
 289 </dd></dl>
 290
 291 </div>
 292 <div class="section" id="description">
 293 <h2>DESCRIPTION<a class="headerlink" href="#description" title="Permalink to this headline">¶</a></h2>
 294 <p>These compile time defaults are provided by <code class="xref cpp cpp-any docutils literal notranslate"><span class="pre">libmemcached</span></code> for convenience.</p>
 295 </div>
 296 </div>
 297
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