regex - fastcgi_cache_key exclude some args in request uri -


my fastcgi_cache_key is: 

fastcgi_cache_key "$host$request_method$request_uri";

my $request_uri has timestamp , signature in it:

 /abc/xyz?product_id=10529125896&shop_id=17224077&shop=abc.com&path_prefix=%2fa%2fcomment&timestamp=1503044416&signature=882102c51c7b7bd4c5d8521a6565fc70c27b908547316f1123eb4af13b19f2da

so, cache miss (because has different timestamp , signature). question is:

i want create new var , use var fastcgi_cache_key. var has this:

myvar

/abc/xyz?product_id=10529125896&shop_id=17224077&shop=abc.com

fastcgi_cache_key this:

fastcgi_cache_key "$host$request_method$myvar";

how can ? much.

there 2 ways it.

if ($request_uri ~ "([^\?]*)\?(.*)timestamp=([^&]*)&?(.*)") {   set $args $2$4; } fastcgi_cache_key "$host$request_method$args";

this remove timestamp. can either modify pattern ignore 1 more field or can use twice remove field $args.

next option use openresty or nginx lua allows execute lua script in code. if conditions not considered good. having lua increases software requirement


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