# Nginx-0.8.37 **URL:** \ **Category:** NGINX\ **Created:** [May 17, 2010, 8:16am UTC](https://www.ruby-forum.com/t/nginx-0-8-37/188718 "2010-05-17T08:16:47Z")\ **Posts on this page:** 11\ **Page:** 1
**Author:** ![imixaly4](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/i/3ab097/32.png) [@imixaly4](https://www.ruby-forum.com/u/imixaly4)\ **Post date:** [May 17, 2010, 8:16am UTC](https://www.ruby-forum.com/t/nginx-0-8-37/188718/1 "2010-05-17T08:16:47Z")
Changes with nginx 0.8.37 17 May 2010 ``` *) Feature: the ngx_http_split_clients_module. *) Feature: the "map" directive supports keys more than 255 ``` characters. ``` *) Bugfix: nginx ignored the "private" and "no-store" values in the "Cache-Control" backend response header line. *) Bugfix: a "stub" parameter of an "include" SSI directive was not used, if empty response has 200 status code. *) Bugfix: if a proxied or FastCGI request was internally redirected ``` to another proxied or FastCGI location, then a segmentation fault might occur in a worker process; the bug had appeared in 0.8.33. Thanks to Yichun Z… ``` *) Bugfix: IMAP connections may hang until they timed out while ``` talking to Zimbra server. Thanks to Alan Batie. – Igor S. [http://sysoev.ru/en/](http://sysoev.ru/en/) ---
**Author:** ![imixaly4](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/i/3ab097/32.png) [@imixaly4](https://www.ruby-forum.com/u/imixaly4)\ **Post date:** [May 17, 2010, 8:20am UTC](https://www.ruby-forum.com/t/nginx-0-8-37/188718/2 "2010-05-17T08:20:18Z")
Thanks Igor. Regards, Joe ---
**Author:** ![imixaly4](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/i/3ab097/32.png) [@imixaly4](https://www.ruby-forum.com/u/imixaly4)\ **Post date:** [May 17, 2010, 10:52am UTC](https://www.ruby-forum.com/t/nginx-0-8-37/188718/3 "2010-05-17T10:52:29Z")
How to use ngx\_http\_split\_clients\_module? Please give an example. ---
**Author:** ![imixaly4](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/i/3ab097/32.png) [@imixaly4](https://www.ruby-forum.com/u/imixaly4)\ **Post date:** [May 17, 2010, 11:48am UTC](https://www.ruby-forum.com/t/nginx-0-8-37/188718/4 "2010-05-17T11:48:06Z")
lhmwzy at 2010-5-17 16:51 wrote: > How to use ngx\_http\_split\_clients\_module? > Please give an example. read this: [http://www.ruby-forum.com/topic/209653#new](http://www.ruby-forum.com/topic/209653#new) > * * * > > nginx mailing list > [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) > [mailman.nginx.org archive](http://nginx.org/mailman/listinfo/nginx) – Weibin Y. ---
**Author:** ![imixaly4](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/i/3ab097/32.png) [@imixaly4](https://www.ruby-forum.com/u/imixaly4)\ **Post date:** [May 17, 2010, 11:51am UTC](https://www.ruby-forum.com/t/nginx-0-8-37/188718/5 "2010-05-17T11:51:01Z")
On Mon, May 17, 2010 at 04:51:45PM +0800, lhmwzy wrote: > How to use ngx\_http\_split\_clients\_module? > Please give an example. http { split\_clients “${remote\_addr}AAA” $variant { 0.5% .one; 2.0% .two; - “”; } ``` server { location / { index index${variant}.html; ``` $cookie\_…, etc, may be used as a source for splitting. The source string is hashed using CRC32 and the percent of the hash is used as source value. – Igor S. > **[Igor Sysoev](http://sysoev.ru/en/)** ---
**Author:** ![imixaly4](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/i/3ab097/32.png) [@imixaly4](https://www.ruby-forum.com/u/imixaly4)\ **Post date:** [May 17, 2010, 12:06pm UTC](https://www.ruby-forum.com/t/nginx-0-8-37/188718/6 "2010-05-17T12:06:50Z")
Thanks Igor. 2010/5/17 Igor S. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) ---
**Author:** ![imixaly4](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/i/3ab097/32.png) [@imixaly4](https://www.ruby-forum.com/u/imixaly4)\ **Post date:** [May 18, 2010, 6:00pm UTC](https://www.ruby-forum.com/t/nginx-0-8-37/188718/7 "2010-05-18T18:00:28Z")
Igor S. ha scritto: > Changes with nginx 0.8.37 17 May 2010 > […] > \*) Bugfix: nginx ignored the “private” and “no-store” values in the > “Cache-Control” backend response header line. By the way, last time I checked the code, I noted that Nginx always ignore the Vary header, and require the cache key to be explicitly set. Is it possible to have a default cache key, generated from request URI (including query string) and Vary header? > […] Thanks Manlio ---
**Author:** ![imixaly4](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/i/3ab097/32.png) [@imixaly4](https://www.ruby-forum.com/u/imixaly4)\ **Post date:** [May 18, 2010, 6:12pm UTC](https://www.ruby-forum.com/t/nginx-0-8-37/188718/8 "2010-05-18T18:12:46Z")
On Tue, May 18, 2010 at 05:59:07PM +0200, Manlio P. wrote: > Is it possible to have a default cache key, generated from request URI > (including query string) and Vary header? The Vary header is response header, you can not use it in cache key. – Igor S. > **[Igor Sysoev](http://sysoev.ru/en/)** ---
**Author:** ![imixaly4](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/i/3ab097/32.png) [@imixaly4](https://www.ruby-forum.com/u/imixaly4)\ **Post date:** [May 18, 2010, 6:35pm UTC](https://www.ruby-forum.com/t/nginx-0-8-37/188718/9 "2010-05-18T18:35:38Z")
Igor S. ha scritto: > > Is it possible to have a default cache key, generated from request URI > > (including query string) and Vary header? > > The Vary header is response header, you can not use it in cache key. I meant the Vary header from backend response. Regards Manlio ---
**Author:** ![imixaly4](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/i/3ab097/32.png) [@imixaly4](https://www.ruby-forum.com/u/imixaly4)\ **Post date:** [May 18, 2010, 7:13pm UTC](https://www.ruby-forum.com/t/nginx-0-8-37/188718/10 "2010-05-18T19:13:07Z")
Igor S. ha scritto: > > > > > > > does not know them: the key is used to find a cached backend response. The idea is two use a two level cache lookup. The first level is done using original cache\_key. The associated cache zone will contain the Vary header specified when backend response is cached. The second level is done using cache\_key updated with request headers specified in Vary header. This is just an idea, I was curious to know if adding support to Vary header is possible with current implementation. Thanks Manlio ---
**Author:** ![imixaly4](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/i/3ab097/32.png) [@imixaly4](https://www.ruby-forum.com/u/imixaly4)\ **Post date:** [May 18, 2010, 6:47pm UTC](https://www.ruby-forum.com/t/nginx-0-8-37/188718/11 "2010-05-18T18:47:21Z")
On Tue, May 18, 2010 at 06:34:18PM +0200, Manlio P. wrote: > > > ignore the Vary header, and require the cache key to be explicitly set. > > > > > > Is it possible to have a default cache key, generated from request URI > > > (including query string) and Vary header? > > > > The Vary header is response header, you can not use it in cache key. > > I meant the Vary header from backend response. Backend response headers can not be used in cache key, because nginx does not know them: the key is used to find a cached backend response. – Igor S. > **[Igor Sysoev](http://sysoev.ru/en/)**