Facebook Security Engineer at the talk I was earlier:

"So yeah Instagram is Python, Facebook is a big monolith in PHP... (we hate it.)"

I've heard it years ago and I am unsurprised it's unchanged, especially given the investment in HipHopPHP or whatever it's called

@ivan @angristan hhvm has made a lot of improvement in terms of speed...

@angristan This explains a bunch about Facebooks design in general.

@angristan Why does this not surprise me? Python is SO much better than PHP.

@angristan so what they meant by that? PHP is horrible at security?

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