Nginx The ?: prefix is a 'non-capturing' mark

Interesting https://stackoverflow.com/a/3513858/272648 and https://stackoverflow.com/a/3512504/272648 try and test and see if it helps.

 

Was talking more about testing performance differences as not sure how much benefit it would be given Centmin Mod Nginx also uses PCRE JIT/PCRE2 JIT. But if folks want to switch their staticfiles.conf to non-capturing mark, you can do it easily using instructions using sed replacements at centminmod /usr/local/nginx/conf/staticfiles.conf non-capture mark regex switch

Probably wouldn't hurt to eventually use this in staticfiles.conf by default though

 

PCRE/PCRE JIT/PCRE2/PCRE2 JIT benchmarks at Regex Engine Matching Speed Benchmark