Cache: fix sending of stale responses [Re: nginx Digest, Vol 9, Issue 39]
Davide D'Amico
davide.damico at contactlab.com
Tue Jul 20 10:23:25 MSD 2010
On 19/07/10 20.01, nginx-request at nginx.org wrote:
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> Today's Topics:
>
> 1. Rewrite Performance Question (Juergen Gotteswinter)
> 2. Re: Rewrite Performance Question (Boris Dolgov)
> 3. Re: nginx-0.8.45 (Phillip Oldham)
> 4. Re: Rewrite Performance Question (Igor Sysoev)
> 5. Re: Rewrite Performance Question (Juergen Gotteswinter)
> 6. Re: nginx-0.8.45 (Igor Sysoev)
> 7. nginx-0.8.46 (Igor Sysoev)
> 8. Re: block robots for some urls (Igor Sysoev)
> 9. Re: Rewrite Performance Question (Edho P Arief)
> 10. Re: nginx-0.8.46 (Maxim Dounin)
> 11. Re: nginx-0.8.46 (iberkner at gmail.com)
> 12. Re: nginx-0.8.46 (iberkner at gmail.com)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Mon, 19 Jul 2010 11:59:03 +0200
> From: Juergen Gotteswinter <jg at internetx.de>
> To: nginx at nginx.org
> Subject: Rewrite Performance Question
> Message-ID: <4C4421E7.6060403 at internetx.de>
> Content-Type: text/plain; charset=UTF-8
>
> Hi,
>
> come some take a look at these rewrite rules if they are ok regarding
> performance?
>
>
> if ($host = 'forum.de' ) {
> rewrite ^/(.*)$ http://www.forum.de:81/$1 permanent;
> }
>
> if ($host ~* ^(www\.)??forum\.(at|ch|com|eu|info|net|org)) {
> rewrite ^(.*)$ http://www.forum.de:81 last;
> break;
> }
> }
>
>
> Thanks :)
>
> Juergen
>
>
>
> ------------------------------
>
> Message: 2
> Date: Mon, 19 Jul 2010 14:20:49 +0400
> From: Boris Dolgov <boris at dolgov.name>
> To: nginx at nginx.org
> Subject: Re: Rewrite Performance Question
> Message-ID:
> <AANLkTikR88X3iSw_UF8zZDRM8sV7W00mzulYqQ6B_r4F at mail.gmail.com>
> Content-Type: text/plain; charset=ISO-8859-1
>
> On Mon, Jul 19, 2010 at 1:59 PM, Juergen Gotteswinter <jg at internetx.de> wrote:
>> Hi,
>>
>> come some take a look at these rewrite rules if they are ok regarding
>> performance?
>>
>>
>> ? ? ? ?if ($host = 'forum.de' ) {
>> ? ? ? ? ? ?rewrite ^/(.*)$ http://www.forum.de:81/$1 permanent;
>> ? ? ? ?}
>>
>> ? ? ? ?if ($host ~* ^(www\.)??forum\.(at|ch|com|eu|info|net|org)) {
>> ? ? ? ? ? ?rewrite ^(.*)$ http://www.forum.de:81 last;
>> ? ? ? ?break;
>> ? ? ? ?}
>> ? }
> Hi!
> Never use if ($host ...
> Different servers with different server_names must be used instead:
> server
> {
> server_name forum.de;
> location / { rewrite ^ http://www.forum.de:81/$request_uri? premanent; }
> }
> server
> {
> server_name ~^(www\.)??forum\.(at|ch|com|eu|info|net|org);
> location / { rewrite ^ http://www.forum.de:81/$request_uri? premanent; }
> }
>
>
> --
> Boris Dolgov.
>
>
>
> ------------------------------
>
> Message: 3
> Date: Mon, 19 Jul 2010 12:09:59 +0100
> From: Phillip Oldham <phill at activityhq.com>
> To: nginx at nginx.org
> Subject: Re: nginx-0.8.45
> Message-ID: <4C443287.9030206 at activityhq.com>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>
> On 13/07/2010 13:02, Igor Sysoev wrote:
>> Changes with nginx 0.8.45 13 Jul 2010
>>
>> *) Feature: ngx_http_xslt_filter improvements.
>> Thanks to Laurence Rowe.
>>
>
> Is there any additional information on these improvements?
> --
>
> *Phillip B Oldham*
> ActivityHQ
> phill at activityhq.com <mailto:phill at theactivitypeople.co.uk>
>
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>
> ------------------------------
>
> Message: 4
> Date: Mon, 19 Jul 2010 15:10:24 +0400
> From: Igor Sysoev <igor at sysoev.ru>
> To: nginx at nginx.org
> Subject: Re: Rewrite Performance Question
> Message-ID: <20100719111024.GC47630 at rambler-co.ru>
> Content-Type: text/plain; charset=koi8-r
>
> On Mon, Jul 19, 2010 at 02:20:49PM +0400, Boris Dolgov wrote:
>
>> On Mon, Jul 19, 2010 at 1:59 PM, Juergen Gotteswinter <jg at internetx.de> wrote:
>>> Hi,
>>>
>>> come some take a look at these rewrite rules if they are ok regarding
>>> performance?
>>>
>>>
>>> ? ? ? ?if ($host = 'forum.de' ) {
>>> ? ? ? ? ? ?rewrite ^/(.*)$ http://www.forum.de:81/$1 permanent;
>>> ? ? ? ?}
>>>
>>> ? ? ? ?if ($host ~* ^(www\.)??forum\.(at|ch|com|eu|info|net|org)) {
>>> ? ? ? ? ? ?rewrite ^(.*)$ http://www.forum.de:81 last;
>>> ? ? ? ?break;
>>> ? ? ? ?}
>>> ? }
>> Hi!
>> Never use if ($host ...
>> Different servers with different server_names must be used instead:
>> server
>> {
>> server_name forum.de;
>> location / { rewrite ^ http://www.forum.de:81/$request_uri? premanent; }
>> }
>> server
>> {
>> server_name ~^(www\.)??forum\.(at|ch|com|eu|info|net|org);
>> location / { rewrite ^ http://www.forum.de:81/$request_uri? premanent; }
>> }
>
> Also, in the second server it's better to use usual names instead of regex:
>
> server_name forum.at www.forum.at
> forum.ch www.forum.ch
> ...
> ;
>
>
> --
> Igor Sysoev
> http://sysoev.ru/en/
>
>
>
> ------------------------------
>
> Message: 5
> Date: Mon, 19 Jul 2010 13:26:46 +0200
> From: Juergen Gotteswinter <jg at internetx.de>
> To: nginx at nginx.org
> Subject: Re: Rewrite Performance Question
> Message-ID: <4C443676.20005 at internetx.de>
> Content-Type: text/plain; charset=KOI8-R
>
> Ok :) thanks to both of you
>
> Juergen
>
> On 07/19/2010 01:10 PM, Igor Sysoev wrote:
>> On Mon, Jul 19, 2010 at 02:20:49PM +0400, Boris Dolgov wrote:
>>
>>> On Mon, Jul 19, 2010 at 1:59 PM, Juergen Gotteswinter <jg at internetx.de> wrote:
>>>> Hi,
>>>>
>>>> come some take a look at these rewrite rules if they are ok regarding
>>>> performance?
>>>>
>>>>
>>>> if ($host = 'forum.de' ) {
>>>> rewrite ^/(.*)$ http://www.forum.de:81/$1 permanent;
>>>> }
>>>>
>>>> if ($host ~* ^(www\.)??forum\.(at|ch|com|eu|info|net|org)) {
>>>> rewrite ^(.*)$ http://www.forum.de:81 last;
>>>> break;
>>>> }
>>>> }
>>> Hi!
>>> Never use if ($host ...
>>> Different servers with different server_names must be used instead:
>>> server
>>> {
>>> server_name forum.de;
>>> location / { rewrite ^ http://www.forum.de:81/$request_uri? premanent; }
>>> }
>>> server
>>> {
>>> server_name ~^(www\.)??forum\.(at|ch|com|eu|info|net|org);
>>> location / { rewrite ^ http://www.forum.de:81/$request_uri? premanent; }
>>> }
>>
>> Also, in the second server it's better to use usual names instead of regex:
>>
>> server_name forum.at www.forum.at
>> forum.ch www.forum.ch
>> ...
>> ;
>>
>>
>
>
>
> ------------------------------
>
> Message: 6
> Date: Mon, 19 Jul 2010 15:26:57 +0400
> From: Igor Sysoev <igor at sysoev.ru>
> To: nginx at nginx.org
> Subject: Re: nginx-0.8.45
> Message-ID: <20100719112657.GD47630 at rambler-co.ru>
> Content-Type: text/plain; charset=koi8-r
>
> On Mon, Jul 19, 2010 at 12:09:59PM +0100, Phillip Oldham wrote:
>
>> On 13/07/2010 13:02, Igor Sysoev wrote:
>>> Changes with nginx 0.8.45 13 Jul 2010
>>>
>>> *) Feature: ngx_http_xslt_filter improvements.
>>> Thanks to Laurence Rowe.
>>>
>>
>> Is there any additional information on these improvements?
>
> This is little speedup. Please see 589-sax-private.diff patch on
> http://nginx.org/pipermail/nginx-devel/2010-July/000388.html
>
>
> --
> Igor Sysoev
> http://sysoev.ru/en/
>
>
>
> ------------------------------
>
> Message: 7
> Date: Mon, 19 Jul 2010 15:33:43 +0400
> From: Igor Sysoev <igor at sysoev.ru>
> To: nginx at nginx.org
> Subject: nginx-0.8.46
> Message-ID: <20100719113343.GG47630 at rambler-co.ru>
> Content-Type: text/plain; charset=iso-8859-1
>
> Changes with nginx 0.8.46 19 Jul 2010
>
> *) Change: now the "proxy_no_cache", "fastcgi_no_cache",
> "uwsgi_no_cache", and "s?gi_no_cache" directives affect on a cached
> response saving only.
>
> *) Feature: the "proxy_cache_bypass", "fastcgi_cache_bypass",
> "uwsgi_cache_bypass", and "s?gi_cache_bypass" directives.
>
> *) Bugfix: nginx did not free memory in cache keys zones if there was
> an error during working with backend: the memory was freed only
> after inactivity time or on memory low condition.
>
>
> --
> Igor Sysoev
> http://sysoev.ru/en/
>
>
>
> ------------------------------
>
> Message: 8
> Date: Mon, 19 Jul 2010 15:50:36 +0400
> From: Igor Sysoev <igor at sysoev.ru>
> To: nginx at nginx.org
> Subject: Re: block robots for some urls
> Message-ID: <20100719115036.GJ47630 at rambler-co.ru>
> Content-Type: text/plain; charset=koi8-r
>
> On Thu, Jul 15, 2010 at 01:51:36AM +0300, bvidinli wrote:
>
>> Hi,
>>
>> I want to block some robots such as google, to access some urls.
>>
>> here is my config:
>>
>>
>> # robotlarin gezdigi luzumsuz adresleri blokla... zirt pirt
>> giriyorlar sanki bisey varmis gibi
>> set $test "";
>>
>> if ($request_filename ~* calendar) {
>> set $test "blo";
>> }
>>
>> if ($http_user_agent ~* google\.com ) {
>> set $test "${test}ck1";
>> }
>>
>> if ($test = "block1" ){
>> return 444;
>> }
>>
>>
>> this is as described in nginx config, for "and" ing some conditions.
>> but, it do not work now,
>
> location ~ calendar {
> if ($http_user_agent ~* google\.com ) {
> return 444;
> }
>
> ...
> }
>
> ...
>
>
> --
> Igor Sysoev
> http://sysoev.ru/en/
>
>
>
> ------------------------------
>
> Message: 9
> Date: Mon, 19 Jul 2010 20:49:04 +0700
> From: Edho P Arief <edhoprima at gmail.com>
> To: nginx at nginx.org
> Subject: Re: Rewrite Performance Question
> Message-ID:
> <AANLkTik2SDhLeHla8VtuvYp9Pqssi5Zil0xHxh03ui4_ at mail.gmail.com>
> Content-Type: text/plain; charset=UTF-8
>
> 2010/7/19 Igor Sysoev <igor at sysoev.ru>:
>> Also, in the second server it's better to use usual names instead of regex:
>>
>> ? ? server_name ? forum.at www.forum.at
>> ? ? ? ? ? ? ? ? ? forum.ch www.forum.ch
>> ? ? ? ? ? ? ? ? ? ...
>> ? ? ? ? ? ? ? ? ? ;
>>
>
> it would be nice if the config supports simple (extended)
> glob(3)-style pattern matching so it would be something like
>
> server_name {www.,}forum.{at,ch,com,eu,info,net,org};
>
> which should be automatically expanded into
>
> www.forum.at
> www.forum.ch
> www.forum.com
> ...
> forum.net
> forum.org
>
> --
> O< ascii ribbon campaign - stop html mail - www.asciiribbon.org
>
>
>
> ------------------------------
>
> Message: 10
> Date: Mon, 19 Jul 2010 20:40:26 +0400
> From: Maxim Dounin <mdounin at mdounin.ru>
> To: nginx at nginx.org
> Subject: Re: nginx-0.8.46
> Message-ID: <20100719164026.GK99657 at mdounin.ru>
> Content-Type: text/plain; charset=utf-8
>
> Hello!
>
> On Mon, Jul 19, 2010 at 03:33:43PM +0400, Igor Sysoev wrote:
>
>> Changes with nginx 0.8.46 19 Jul 2010
>>
>> *) Change: now the "proxy_no_cache", "fastcgi_no_cache",
>> "uwsgi_no_cache", and "s?gi_no_cache" directives affect on a cached
>> response saving only.
>>
>> *) Feature: the "proxy_cache_bypass", "fastcgi_cache_bypass",
>> "uwsgi_cache_bypass", and "s?gi_cache_bypass" directives.
>
> Russian "?" (in koi8-r, 0xD3) slipped in instead of latin "c" in
> "scgi_no_cache" and "scgi_cache_bypass" directive names (and the
> same in CHANGES and CHANGES.ru).
>
> Maxim Dounin
>
>
>
> ------------------------------
>
> Message: 11
> Date: Mon, 19 Jul 2010 17:59:36 +0000
> From: iberkner at gmail.com
> To: nginx at nginx.org
> Subject: Re: nginx-0.8.46
> Message-ID:
> <781197071-1279562377-cardhu_decombobulator_blackberry.rim.net-1922581859- at bda2313.bisx.prod.on.blackberry>
>
> Content-Type: text/plain; charset="Windows-1252"
>
>
> ------Original Message------
> From: Igor Sysoev
> To: nginx at nginx.org
> ReplyTo: nginx at nginx.org
> Subject: nginx-0.8.46
> Sent: Jul 19, 2010 7:33 AM
>
> Changes with nginx 0.8.46 19 Jul 2010
>
> *) Change: now the "proxy_no_cache", "fastcgi_no_cache",
> "uwsgi_no_cache", and "s?gi_no_cache" directives affect on a cached
> response saving only.
>
> *) Feature: the "proxy_cache_bypass", "fastcgi_cache_bypass",
> "uwsgi_cache_bypass", and "s?gi_cache_bypass" directives.
>
> *) Bugfix: nginx did not free memory in cache keys zones if there was
> an error during working with backend: the memory was freed only
> after inactivity time or on memory low condition.
>
>
> --
> Igor Sysoev
> http://sysoev.ru/en/
>
> _______________________________________________
> nginx mailing list
> nginx at nginx.org
> http://nginx.org/mailman/listinfo/nginx
>
>
> Sent on the Sprint? Now Network from my BlackBerry?
>
> ------------------------------
>
> Message: 12
> Date: Mon, 19 Jul 2010 18:00:55 +0000
> From: iberkner at gmail.com
> To: nginx at nginx.org
> Subject: Re: nginx-0.8.46
> Message-ID:
> <2090767961-1279562455-cardhu_decombobulator_blackberry.rim.net-1651410852- at bda2313.bisx.prod.on.blackberry>
>
> Content-Type: text/plain; charset="Windows-1252"
>
>
> ------Original Message------
> From: Igor Sysoev
> To: nginx at nginx.org
> ReplyTo: nginx at nginx.org
> Subject: nginx-0.8.46
> Sent: Jul 19, 2010 7:33 AM
>
> Changes with nginx 0.8.46 19 Jul 2010
>
> *) Change: now the "proxy_no_cache", "fastcgi_no_cache",
> "uwsgi_no_cache", and "s?gi_no_cache" directives affect on a cached
> response saving only.
>
> *) Feature: the "proxy_cache_bypass", "fastcgi_cache_bypass",
> "uwsgi_cache_bypass", and "s?gi_cache_bypass" directives.
>
> *) Bugfix: nginx did not free memory in cache keys zones if there was
> an error during working with backend: the memory was freed only
> after inactivity time or on memory low condition.
>
>
Well, after this release, have I still to apply these patches?
http://nginx.org/pipermail/nginx-devel/2010-January/000101.html?
http://nginx.org/pipermail/nginx-devel/2010-January/000102.html
I mean, it seems it's a bug introduced in nginx-devel 0.8.31 and it's 6
months old, so could you apply these patches on the official tree (or
tell me why not)?
Thanks for your work,
d.
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