[hyperpape]

There's pretty wide variety in the performance of regular expressions between different languages, and efficient implementations will often recognize when your regular expression has a literal suffix/prefix, and optimize accordingly.

That doesn't help you if you're stuck using a library that doesn't perform those optimizations, but it means you need to be careful about importing your assumptions about regex performance from one language to another.

See also: https://github.com/burntSushi/rebar