What is opcode caching?
When a PHP script is called by a users browser the process is as folllows:
As you can imagine, converting source code to machine code (opcode) can be resource intensive. Opcode caches will store the opcode in a cache and execute it instead of constantly recompiling the source code. This basically eliminates step 2 in the above list and seriously speeds up your site. There are many opcode caches out there such as Xcache, APC, etc.. No large site should be without one! |
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