[squid-users] Regex optimization

[Yuri Voinov]

https://regex101.com is your best friend.


27.04.16 17:32, Alfredo Rezinovsky пишет:
> I saw in debug log that when an ACL has many regexes each one is 
> compared sequentially.
>
> If I have
>
> www.facebook.com <http://www.facebook.com>
> facebook.com <http://facebook.com>
> www.google.com <http://www.google.com>
> google.com <http://google.com>
>
> If will be faster to check just ONE optimized regex like 
> (www\.)?(facebook|google).com than the previous three?
>
> I'm really talking about optimizing about 3000 url regexes in one huge 
> regex because comparing each and every url to 3000 regexes is too slow.
>
> I know using 
> (www\.facebook\.com)|(facebook\.com)|(www\.google\.com)|(google\.com) 
> with PCRE will produce the same optimized result as 
> (www\.)?(facebook|google)\.com. Squid uses GnuRegex. Does GNURegex lib 
> optimizes this as well ?
>
>
> -- 
> Alfrenovsky
>
>
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