ruby on rails - What languages do twitter and facebook use? -

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I've been using php for the last 6 months and I can do anything with it. But big websites such as Facebook and Twitter can not be used. I want to know what language they use and why they chose that language on PHP

Is there a good language to build strong and big websites on Ruby? ? I have seen the video of ROR on the uroutube in the framework of other frameworks and languages, is it really terrible ?

Ruby is built on the rail

Facebook primarily uses PHP , But it also depends on "C ++, Java, Python and ERRGE" -


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