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4277c95b5a9454a5c25f8d8762634fcff37aa840minfrin<title>mod_lbmethod_heartbeat - Apache HTTP Server</title>
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4277c95b5a9454a5c25f8d8762634fcff37aa840minfrin<p class="menu"><a href="/mod/">Modules</a> | <a href="/mod/directives.html">Directives</a> | <a href="http://wiki.apache.org/httpd/FAQ">FAQ</a> | <a href="/glossary.html">Glossary</a> | <a href="/sitemap.html">Sitemap</a></p>
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3f08db06526d6901aa08c110b5bc7dde6bc39905nd<a href="http://www.apache.org/">Apache</a> > <a href="http://httpd.apache.org/">HTTP Server</a> > <a href="http://httpd.apache.org/docs/">Documentation</a> > <a href="../">Version 2.5</a> > <a href="./">Modules</a></div>
4277c95b5a9454a5c25f8d8762634fcff37aa840minfrin<div id="preamble"><h1>Apache Module mod_lbmethod_heartbeat</h1>
f086b4b402fa9a2fefc7dda85de2a3cc1cd0a654rjung<p><span>Available Languages: </span><a href="/en/mod/mod_lbmethod_heartbeat.html" title="English"> en </a></p>
4277c95b5a9454a5c25f8d8762634fcff37aa840minfrin<table class="module"><tr><th><a href="module-dict.html#Description">Description:</a></th><td>Heartbeat Traffic Counting load balancer scheduler algorithm for <code class="module"><a href="/mod/mod_proxy_balancer.html">mod_proxy_balancer</a></code></td></tr>
7f0952c0239ea2d6e37b472db6fde4ef2718343dsf<tr><th><a href="module-dict.html#Status">Status:</a></th><td>Experimental</td></tr>
4277c95b5a9454a5c25f8d8762634fcff37aa840minfrin<tr><th><a href="module-dict.html#ModuleIdentifier">Module�Identifier:</a></th><td>lbmethod_heartbeat_module</td></tr>
46f74e65e6051e6e9391c8e17c5116317210facetakashi<tr><th><a href="module-dict.html#SourceFile">Source�File:</a></th><td>mod_lbmethod_heartbeat.c</td></tr>
46f74e65e6051e6e9391c8e17c5116317210facetakashi<tr><th><a href="module-dict.html#Compatibility">Compatibility:</a></th><td>Available in version 2.3 and later</td></tr></table>
4277c95b5a9454a5c25f8d8762634fcff37aa840minfrin<p>lbmethod=heartbeat uses the services of <code class="module"><a href="/mod/mod_heartmonitor.html">mod_heartmonitor</a></code> to balance between origin servers that are providing
4277c95b5a9454a5c25f8d8762634fcff37aa840minfrinheartbeat info via the <code class="module"><a href="/mod/mod_heartbeat.html">mod_heartbeat</a></code> module.</p>
4277c95b5a9454a5c25f8d8762634fcff37aa840minfrin<p> This modules load balancing algorithm favors servers with more ready (idle)
4277c95b5a9454a5c25f8d8762634fcff37aa840minfrincapacity over time, but does not select the server with the most ready capacity
4277c95b5a9454a5c25f8d8762634fcff37aa840minfrinevery time. Servers that have 0 active clients are penalized, with the
4277c95b5a9454a5c25f8d8762634fcff37aa840minfrinassumption that they are not fully initialized.</p>
4277c95b5a9454a5c25f8d8762634fcff37aa840minfrin<div id="quickview"><h3 class="directives">Directives</h3>
72c3c99143571371be76ed3916b19bd3214b4363martin<li><img alt="" src="/images/down.gif" /> <a href="#heartbeatstorage">HeartbeatStorage</a></li>
4277c95b5a9454a5c25f8d8762634fcff37aa840minfrin<li><code class="module"><a href="/mod/mod_proxy.html">mod_proxy</a></code></li>
9a58dc6a2b26ec128b1270cf48810e705f1a90dbsf<li><code class="module"><a href="/mod/mod_proxy_balancer.html">mod_proxy_balancer</a></code></li>
4277c95b5a9454a5c25f8d8762634fcff37aa840minfrin<li><code class="module"><a href="/mod/mod_heartbeat.html">mod_heartbeat</a></code></li>
4277c95b5a9454a5c25f8d8762634fcff37aa840minfrin<li><code class="module"><a href="/mod/mod_heartmonitor.html">mod_heartmonitor</a></code></li>
9a58dc6a2b26ec128b1270cf48810e705f1a90dbsf</ul><ul class="seealso"><li><a href="#comments_section">Comments</a></li></ul></div>
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4277c95b5a9454a5c25f8d8762634fcff37aa840minfrin<div class="directive-section"><h2><a name="HeartbeatStorage" id="HeartbeatStorage">HeartbeatStorage</a> <a name="heartbeatstorage" id="heartbeatstorage">Directive</a></h2>
c1e61f5534383913a1cb952f927348037b1c1922minfrin<tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Path to read heartbeat data</td></tr>
4277c95b5a9454a5c25f8d8762634fcff37aa840minfrin<tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>HeartbeatStorage <var>file-path</var></code></td></tr>
59877c2b4bb77f563370d7fb238f4a6d7a0e7f44minfrin<tr><th><a href="directive-dict.html#Default">Default:</a></th><td><code>HeartbeatStorage logs/hb.dat</code></td></tr>
4277c95b5a9454a5c25f8d8762634fcff37aa840minfrin<tr><th><a href="directive-dict.html#Context">Context:</a></th><td>server config</td></tr>
4277c95b5a9454a5c25f8d8762634fcff37aa840minfrin<tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Experimental</td></tr>
4277c95b5a9454a5c25f8d8762634fcff37aa840minfrin<tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_lbmethod_heartbeat</td></tr>
4277c95b5a9454a5c25f8d8762634fcff37aa840minfrin <p>The <code class="directive">HeartbeatStorage</code> directive specifies the
4277c95b5a9454a5c25f8d8762634fcff37aa840minfrin path to read heartbeat data. This flat-file is used only when
4277c95b5a9454a5c25f8d8762634fcff37aa840minfrin <code class="module"><a href="/mod/mod_slotmem_shm.html">mod_slotmem_shm</a></code> is not loaded.</p>
4277c95b5a9454a5c25f8d8762634fcff37aa840minfrin<p><span>Available Languages: </span><a href="/en/mod/mod_lbmethod_heartbeat.html" title="English"> en </a></p>
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