mod_proxy_fcgi.xml: add examples for flushpackets=on

    </highlight>

    </example>

    <p> The following example forces the module to flush every chunk of data received

    from the FCGI backend as soon as it receives it, without buffering.</p>

    <example><title>Force flush of FCGI data without buffering</title>

    <highlight language="config">

ProxyPassMatch "^/myapp/.*\.php(/.*)?$" "fcgi://localhost:9000/var/www/" enablereuse=on flushpackets=on

    </highlight>

    </example>

    <p> The following example is related to the previous one with a difference: the module waits/polls

    for a fixed amount of time before flushing (buffering data from the FCGI backend).

    This method is useful when the FCGI backend emits data in short bursts, since

    forcing a flush would result inefficient and expensive for performances. Please note

    that this setting might not be the best one in use cases when outgoing data chunks

    from the FCGI application are blocked waiting on incoming chunks from the client.

    </p>

    <example><title>Force flush of FCGI data buffering for 20ms</title>

    <highlight language="config">

ProxyPassMatch "^/myapp/.*\.php(/.*)?$" "fcgi://localhost:9000/var/www/" flushpackets=on flushwait=20

    </highlight>

    </example>

    <p>The balanced gateway needs <module>mod_proxy_balancer</module> and

    at least one load balancer algorithm module, such as

    <module>mod_lbmethod_byrequests</module>, in addition to the proxy