At least for those simplicistic patterns, you'll likely do much better if you just do a substring search. The regex engine will also do the substring search for you, but if you don't have www.*.info as valid pattern, using substr index could be faster. Even if you have such patterns, you can possibly move them towards the end of the checks so the rejection can happen earlier.

Update: I meant index...

In reply to Re^3: regexp performance on large logfiles by Corion
in thread regexp performance on large logfiles by snl_JYDawg

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