mod_deflate has replaced Apache 1.3’s mod_gzip in Apache2On the LoadModule Section in the httpd.conf file 1) LoadModule deflate_module /usr/lib/apache2/modules/mod_deflate.soAdjust the module’s path..2) If you wish to compress HTML, text, and XML files only add the following
AddOutputFilterByType DEFLATE text/html text/plain text/xml3) Restart apache /etc/init.d/apache2 restartMore Details here http://www.howtoforge.com/apache2_mod_deflate

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Background
The typical debug statement looks like this:

echo "<p>Hello, I am a debug statement</p>";

This is the workhorse of PHP debugging—at least, when we aren't using a debugger. We insert it as needed and remove it when done.
Sometimes the debug code takes some work to produce [...]

Install MemCached1. pecl install memcache2. extension=memcache.so in php.iniAbout MemCachedLiveJournal.com currently has 28 Memcached instances running on our network on ten unique hosts, cachingthe most popular 30GB of data. Thier hit rate is around 92%, which means they are hitting the databases a lot lessoften than before.