Using different languages in one project

Posted by Tarbal on Stack Overflow See other posts from Stack Overflow or by Tarbal
Published on 2010-05-17T15:10:23Z Indexed on 2010/05/17 16:20 UTC
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mixed-language

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General

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programming-languages

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best-practices

I recently heard about the use of several different languages in a (big) project, I also read about famous services such as Twitter using Rails as frontend, mixed with some other languages, and Scala I think it was as backend.

Is this common practice? Who does that?
I'm sure there are disadvantages to this. I think that you will have problems with the different interpreters/compilers and seamlessly connecting the different languages. Is this true?
Why is this actually done? For performance?

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