What programming languages are used at Facebook? Where is each one used?
nlanguage used.-although -various
teams at
Facebook are -free to use other [languages as
appropriate] -This means that Facebook as it exists now is a sprawling system
implemented - in multiple language – but Php was the used to must
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,
PHP is used manly -for the front-end, Erlang- is used for-
Chat-Java and -C++ are also used in several places [and perhaps other languages
as well]-Thrift -is an internally developed cross-language framework that ties
all of these different languages together, making it possible for them to talk
to each other.
In Facebook –PHP-being a scripting- language,
is relatively slow when -compared to code that runs natively on a server-HipHop
converts PHP into- C++
code -which can then be compiled
for –better- performance.
They
– use- off the shelf hard drives- and systems, more of the- coding is custom.
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To
introduce new features- C++ -was introduced some time –ago-at the backend
aswell as the front end [which is-
ofcourse visible- in the source code of the webpage written as ]
Currently
-their servers serve -5,00,000 photos - a second, and add more than 24tb of
just the picture data every week,- they have to be pretty cautious about space.
However
- for the fact -that they built
-HPC -which
converts their- PHP codes to C++ so that itcan run faster explains the heavy dependence of -the facebook on- Php
OCaml
- (programming language)- Haskell (programming language)-and Ruby (programming
language) are used internally, but as -far
as I know they don't power anything available on- the website;
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