Alternative PHP Cache - Anyone using it?
"Alternatives" to APC include XCache and eAccelerator. (Let's not count proprietary Zend products.) XCache was developed by the lighttpd team to increase performance and stability in the FastCGI environment, at a time when APC used to be somewhat buggy. But nowadays, APC works perfectly with FPM, too. It's also been a few years since I've heard of anybody using eAccelerator. APC is now the de facto standard.