Not existant files passed to php backend

[Delta Yeh]

Does multiple complex directive inside "if" block  impact the performance ?
If so, how much ?

2008/8/20 Igor Sysoev <is at rambler-co.ru>:
> On Wed, Aug 20, 2008 at 05:29:00PM +0200, Roxis wrote:
>
>> On Wednesday 20 August 2008, Reinis Rozitis wrote:
>> > > it is expected
>> > >
>> > > if you don't like php's 404 page
>> > > set fastcgi_intercept_errors to on
>> >
>> > I see.
>> >
>> > Just switching from lighty where the default behaviour is first to check
>> > the local file ( lighttpd has an extra setting 'check-local' where you can
>> > specify to look for the file on local disk rather than blindly forwarding
>> > to request on the fastcgi backend )
>> >
>> > Although this is handy in case of remote fastcgi backends isnt the majority
>> > setups where the nginx and php (and other fastcgi processes) are on the
>> > same box? And as the php is the slowest component wouldnt it be more
>> > efficient from the performance point of view for the nginx throw the error
>> > first rather than intercepting the error later (and maybe add a
>> > setting/feature (mimic to lighty) to disable the local file check)..
>> >
>> > Anyways thx for the hint.
>> >
>> > rr
>>
>> you can use ngx_http_rewrite_module
>>
>> if (!-f $request_filename) {
>>     return 404;
>> }
>> fastcgi_pass ...
>>
>> but it's not recommended
>
> Although I generally do not recommend to use "if (!-f $request_filename)",
> it's mostly related to complex directive inside "if" block, something like:
>
>      if (!-f $request_filename) {
>          fastcgi_pass ...
>      }
>
> but simple "return 404" in "if" block is OK.
>
>
> --
> Igor Sysoev
> http://sysoev.ru/en/
>
>