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Random things on PHP, Symfony and web development
There are plenty of great tools for debugging PHP applications like ones built with Symfony, but catching reasons for slow processes in production can still be a tough cookie.
Blackfire is a product that helps developers profile their applications. It is a combination of various tools. It is similar to, Xdebug a PHP extension which provides debugging and profiling capabilities, but the major difference being that you can run it in production without significant overhead.