<table class="module"><tr><th><a href="module-dict.html#Description">Description:</a></th><td>Bandwidth Rate Limiting for Clients</td></tr>
<tr><th><a href="module-dict.html#Status">Status:</a></th><td>Extension</td></tr>
<tr><th><a href="module-dict.html#ModuleIdentifier">Module Identifier:</a></th><td>ratelimit_module</td></tr>
-<tr><th><a href="module-dict.html#SourceFile">Source File:</a></th><td>mod_ratelimit.c</td></tr></table>
+<tr><th><a href="module-dict.html#SourceFile">Source File:</a></th><td>mod_ratelimit.c</td></tr>
+<tr><th><a href="module-dict.html#Compatibility">Compatibility:</a></th><td><code>rate-initial-burst</code> available in httpd 2.4.24 and later.</td></tr></table>
<h3>Summary</h3>
The connection speed to be simulated is specified, in KiB/s, using the environment
variable <code>rate-limit</code>.</p>
+<p>Optionally, an initial amount of burst data, in KiB, may be
+configured to be passed at full speed before throttling to the
+specified rate limit. This value is optional, and is set using
+the environment variable <code>rate-initial-burst</code>.</p>
+
<div class="example"><h3>Example Configuration</h3><pre class="prettyprint lang-config"><Location "/downloads">
SetOutputFilter RATE_LIMIT
SetEnv rate-limit 400
+ SetEnv rate-initial-burst 512
</Location></pre>
-</div>
+<div class="warning">
+If the value specified for <code>rate-limit</code> causes integer overflow, the rate-limited will be disabled.
+If the value specified for <code>rate-limit-burst</code> causes integer overflow, the burst will be disabled.
+</div></div>
</div>
<div id="quickview"><h3 class="directives">Directives</h3>