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On Notation ― A behind-the-scenes look at Facebook release engineering ∙ HipHop converts PHP into heavily optimized C++ code, which can then be compiled into an efficient native binary. When Facebook unveiled HipHop to the public in 2010 and began distributing it under an open source software license, the company's engineers reported that it reduced average CPU consumption on Facebook by roughly 50 percent.. ∙ The death rattles of AM, then FM ∙ But while FM is finally beating AM, its [...].