# Nginx double requests for my upstreams? **URL:** \ **Category:** NGINX\ **Created:** [June 5, 2009, 2:10pm UTC](https://www.ruby-forum.com/t/nginx-double-requests-for-my-upstreams/169574 "2009-06-05T14:10:22Z")\ **Posts on this page:** 16\ **Page:** 1
**Author:** ![funkdoobiest](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/f/13edae/32.png) [@funkdoobiest](https://www.ruby-forum.com/u/funkdoobiest)\ **Post date:** [June 5, 2009, 2:10pm UTC](https://www.ruby-forum.com/t/nginx-double-requests-for-my-upstreams/169574/1 "2009-06-05T14:10:22Z")
Hi, I have a strange behavior for my site load balanced with nginx. I have 1 Loadbalancer with nginx and 3 servers with apache. sometimes a request is doubled and send to 2 of my apache webservers. this is a big problem for me, because this is sometimes a requests that is doing a payement. I checked this behavior with doing a log of all my payment transactions and there a some transactions for the same person double at the same second! (the user can’t do this at the website, because I send the form which is doing the request with JS and ask the User if he really wants to pay and so on) Here are my config files for nginx, please help me: #ningx.conf user www-data; worker\_processes 4; error\_log logs/error.log; #error\_log logs/error.log notice; #error\_log logs/error.log info; #pid logs/nginx.pid; events { worker\_connections 512; } http { include mime.types; include proxy.conf; ``` access_log logs/access.log combined; sendfile on; tcp_nopush on; keepalive_timeout 0; #keepalive_timeout 15; #gzip on; ``` include upstream.conf; include server\_www.conf; } # proxy.conf proxy\_redirect off; proxy\_set\_header Host $host; proxy\_set\_header X-Real-IP $remote\_addr; proxy\_set\_header X-Forwarded-For $proxy\_add\_x\_forwarded\_for; client\_max\_body\_size 10m; client\_body\_buffer\_size 128k; proxy\_connect\_timeout 90; proxy\_send\_timeout 90; proxy\_read\_timeout 90; proxy\_buffers 32 4k; #upstream.conf upstream webseite { ip\_hash; server 10.XXX.XX.1:8081; server 10.XXX.XX.2:8081; server 10.XXX.XX.3:8081; } #server\_www.conf server { listen 80; server\_name [www.website.com](http://www.website.com); ``` # serve static files ``` location ~\* ^.+.(jpg|jpeg|gif|css|png|js|ico|html|htm|swf)$ { root /var/www/www.website.com/; expires 1d; } ``` location / { proxy_pass http://webseite; } ``` } Thank you! Posted at Nginx Forum: > **[Nginx double requests for my upstreams?](https://forum.nginx.org/read.php?2,2644,2644#msg-2644)** > > Hi, I have a strange behavior for my site load balanced with nginx. I have 1 Loadbalancer with nginx and 3 servers with apache. sometimes a request is doubled and send to 2 of my apache webservers. this is a big problem for me, because this is... ---
**Author:** ![funkdoobiest](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/f/13edae/32.png) [@funkdoobiest](https://www.ruby-forum.com/u/funkdoobiest)\ **Post date:** [June 5, 2009, 3:40pm UTC](https://www.ruby-forum.com/t/nginx-double-requests-for-my-upstreams/169574/2 "2009-06-05T15:40:48Z")
Hello! On Fri, Jun 05, 2009 at 07:59:13AM -0400, funkdoobiest wrote: > Hi, > > I have a strange behavior for my site load balanced with nginx. > I have 1 Loadbalancer with nginx and 3 servers with apache. > > sometimes a request is doubled and send to 2 of my apache webservers. > this is a big problem for me, because this is sometimes a requests that is doing a payement. > I checked this behavior with doing a log of all my payment transactions and there a some transactions > for the same person double at the same second! (the user can’t do this at the website, because I send the form which is doing the request with JS and ask the User if he really wants to pay and so on) [http://wiki.nginx.org/NginxHttpProxyModule#proxy\_next\_upstream](http://wiki.nginx.org/NginxHttpProxyModule#proxy_next_upstream) Maxim D. ---
**Author:** ![funkdoobiest](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/f/13edae/32.png) [@funkdoobiest](https://www.ruby-forum.com/u/funkdoobiest)\ **Post date:** [June 8, 2009, 2:44pm UTC](https://www.ruby-forum.com/t/nginx-double-requests-for-my-upstreams/169574/3 "2009-06-08T14:44:48Z")
Hi Maxim, ## Maxim D. Wrote: > with apache. > send the form which is doing the request with JS > and ask the User if he really wants to pay and so > on) > > [Module ngx\_http\_proxy\_module](http://wiki.nginx.org/NginxHttpProxyModule#proxy_n) > ext\_upstream > > Maxim D. Thank you for your help. I set proxy\_next\_upstream to off, but there are still double requests ☹ Posted at Nginx Forum: > **[Re: Nginx double requests for my upstreams?](https://forum.nginx.org/read.php?2,2644,2689#msg-2689)** > > Hi, I have a strange behavior for my site load balanced with nginx. I have 1 Loadbalancer with nginx and 3 servers with apache. sometimes a request is doubled and send to 2 of my apache webservers. this is a big problem for me, because this is... ---
**Author:** ![funkdoobiest](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/f/13edae/32.png) [@funkdoobiest](https://www.ruby-forum.com/u/funkdoobiest)\ **Post date:** [June 8, 2009, 2:57pm UTC](https://www.ruby-forum.com/t/nginx-double-requests-for-my-upstreams/169574/4 "2009-06-08T14:57:46Z")
I think I noticed this behavior too. The upstream didn’t fail but it tried multiple in parallel anyway. On Jun 7, 2009, at 12:35 PM, “funkdoobiest” [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) ---
**Author:** ![funkdoobiest](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/f/13edae/32.png) [@funkdoobiest](https://www.ruby-forum.com/u/funkdoobiest)\ **Post date:** [June 9, 2009, 5:53am UTC](https://www.ruby-forum.com/t/nginx-double-requests-for-my-upstreams/169574/5 "2009-06-09T05:53:29Z")
Hello, ## Maxim D. Wrote: > * * * > > servers > all > > > > on) > > > double requests ☹ > > It doesn’t looks like nginx problem. Try checking > logs (frontend > and backend ones) - probably your javascript code > just does > something wrong. > > Maxim D. I checked it about 100 times. I checked the logs also. It’s not my script. The requests are at the same second. If i disable the loadbalancer (in this case nginx) double request are stopping. Jan Posted at Nginx Forum: > **[Re: Nginx double requests for my upstreams?](https://forum.nginx.org/read.php?2,2644,2706#msg-2706)** > > Hi, I have a strange behavior for my site load balanced with nginx. I have 1 Loadbalancer with nginx and 3 servers with apache. sometimes a request is doubled and send to 2 of my apache webservers. this is a big problem for me, because this is... ---
**Author:** ![funkdoobiest](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/f/13edae/32.png) [@funkdoobiest](https://www.ruby-forum.com/u/funkdoobiest)\ **Post date:** [June 8, 2009, 4:07pm UTC](https://www.ruby-forum.com/t/nginx-double-requests-for-my-upstreams/169574/6 "2009-06-08T16:07:14Z")
Hello! On Sun, Jun 07, 2009 at 03:35:41PM -0400, funkdoobiest wrote: > > > > > > > my payment transactions and there a some > > Maxim D. > > Thank you for your help. I set proxy\_next\_upstream to off, but there are still double requests ☹ It doesn’t looks like nginx problem. Try checking logs (frontend and backend ones) - probably your javascript code just does something wrong. Maxim D. ---
**Author:** ![funkdoobiest](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/f/13edae/32.png) [@funkdoobiest](https://www.ruby-forum.com/u/funkdoobiest)\ **Post date:** [June 9, 2009, 7:28am UTC](https://www.ruby-forum.com/t/nginx-double-requests-for-my-upstreams/169574/7 "2009-06-09T07:28:16Z")
Hello! On Mon, Jun 08, 2009 at 06:45:03AM -0400, funkdoobiest wrote: > > > > > > > > > is > > > > > > send the form which is doing the request with > > > > Maxim D. > > > > Maxim D. > > I checked it about 100 times. I checked the logs also. It’s not my script. > The requests are at the same second. If i disable the loadbalancer (in this case nginx) double request are stopping. Try the following: 1. Post here nginx -V output to make it clear which version do you use. 2. Post here results of your logs investigations to make it clear that problem appears somewhere at nginx level. This should include relevant nginx access logs (expected: one line with client request; and some grep results to show there is no other identical lines), relevant backend access logs (doubled request should be visible here), relevant lines from nginx error\_log if any. 1. Post here your nginx configs to make it clear how requests in question are processed. There are more than one way to screw things up, and nginx config does matter. 2. Try obtaining relevant debug log (some info may be found at [http://wiki.nginx.org/NginxDebugging](http://wiki.nginx.org/NginxDebugging)), post it here. Maxim D. ---
**Author:** ![funkdoobiest](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/f/13edae/32.png) [@funkdoobiest](https://www.ruby-forum.com/u/funkdoobiest)\ **Post date:** [June 23, 2009, 4:30am UTC](https://www.ruby-forum.com/t/nginx-double-requests-for-my-upstreams/169574/8 "2009-06-23T04:30:19Z")
Hi Maxim, I have checked the nginx-access logs and I found following: 84.72.240.XXX - - [03/Jun/2009:16:38:46 +0200] “POST /premium/paypremium HTTP/1.1” 499 0 “[http://www.host.com/premium/getpremium/](http://www.host.com/premium/getpremium/)” “Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 1.1.4322; .NET CLR 2.0.50727)” 84.72.240.XXX - - [03/Jun/2009:16:38:48 +0200] “POST /premium/paypremium HTTP/1.1” 200 2230 “[http://www.host.com/premium/getpremium/](http://www.host.com/premium/getpremium/)” “Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 1.1.4322; .NET CLR 2.0.50727)” What can I do or what do I wrong? Thank you, Jan Posted at Nginx Forum: > **[Re: Nginx double requests for my upstreams?](https://forum.nginx.org/read.php?2,2644,3272#msg-3272)** > > Hi, I have a strange behavior for my site load balanced with nginx. I have 1 Loadbalancer with nginx and 3 servers with apache. sometimes a request is doubled and send to 2 of my apache webservers. this is a big problem for me, because this is... ---
**Author:** ![funkdoobiest](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/f/13edae/32.png) [@funkdoobiest](https://www.ruby-forum.com/u/funkdoobiest)\ **Post date:** [June 23, 2009, 1:54pm UTC](https://www.ruby-forum.com/t/nginx-double-requests-for-my-upstreams/169574/9 "2009-06-23T13:54:32Z")
My nginx-version: nginx version: nginx/0.7.59 built by gcc 4.3.2 (Debian 4.3.2-1.1) configure arguments: --with-http\_ssl\_module --with-http\_realip\_module –with-http\_addition\_module --with-http\_sub\_module –with-http\_stub\_status\_module --user=www-data --group=www-data Posted at Nginx Forum: > **[Re: Nginx double requests for my upstreams?](https://forum.nginx.org/read.php?2,2644,3287#msg-3287)** > > Hi, I have a strange behavior for my site load balanced with nginx. I have 1 Loadbalancer with nginx and 3 servers with apache. sometimes a request is doubled and send to 2 of my apache webservers. this is a big problem for me, because this is... ---
**Author:** ![funkdoobiest](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/f/13edae/32.png) [@funkdoobiest](https://www.ruby-forum.com/u/funkdoobiest)\ **Post date:** [June 23, 2009, 2:32pm UTC](https://www.ruby-forum.com/t/nginx-double-requests-for-my-upstreams/169574/10 "2009-06-23T14:32:40Z")
Hello! On Mon, Jun 22, 2009 at 10:19:54PM -0400, funkdoobiest wrote: > Hi Maxim, > > I have checked the nginx-access logs and I found following: > > 84.72.240.XXX - - [03/Jun/2009:16:38:46 +0200] “POST /premium/paypremium HTTP/1.1” 499 0 “[http://www.host.com/premium/getpremium/](http://www.host.com/premium/getpremium/)” “Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 1.1.4322; .NET CLR 2.0.50727)” > 84.72.240.XXX - - [03/Jun/2009:16:38:48 +0200] “POST /premium/paypremium HTTP/1.1” 200 2230 “[http://www.host.com/premium/getpremium/](http://www.host.com/premium/getpremium/)” “Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 1.1.4322; .NET CLR 2.0.50727)” > > What can I do or what do I wrong? Error code 499 means that _client_ closed connection before it got response. In this particular case it looks like duplicate form submit, e.g. due to second click on submit button. Maxim D. ---
**Author:** ![funkdoobiest](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/f/13edae/32.png) [@funkdoobiest](https://www.ruby-forum.com/u/funkdoobiest)\ **Post date:** [June 24, 2009, 9:46am UTC](https://www.ruby-forum.com/t/nginx-double-requests-for-my-upstreams/169574/11 "2009-06-24T09:46:05Z")
## Maxim D. Wrote: > > 84.72.240.XXX - - [03/Jun/2009:16:38:46 +0200] > > Maxim D. > I got this 499 error code for about 10% of all the connections. not just > for form-submits. > It seems that “proxy\_ignore\_client\_abort on;” fix that problem. But why? > Is it ok to ignore client aborts? Jan Posted at Nginx Forum: > **[Re: Nginx double requests for my upstreams?](https://forum.nginx.org/read.php?2,2644,3293#msg-3293)** > > Hi, I have a strange behavior for my site load balanced with nginx. I have 1 Loadbalancer with nginx and 3 servers with apache. sometimes a request is doubled and send to 2 of my apache webservers. this is a big problem for me, because this is... ---
**Author:** ![funkdoobiest](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/f/13edae/32.png) [@funkdoobiest](https://www.ruby-forum.com/u/funkdoobiest)\ **Post date:** [June 24, 2009, 10:08am UTC](https://www.ruby-forum.com/t/nginx-double-requests-for-my-upstreams/169574/12 "2009-06-24T10:08:23Z")
Hello! On Tue, Jun 23, 2009 at 10:33:05AM -0400, funkdoobiest wrote: > > following: > > 5.1; SV1; .NET CLR 1.1.4322; .NET CLR 2.0.50727)" > > button. > > > > Maxim D. > > I got this 499 error code for about 10% of all the connections. not just for form-submits. In general 499 errors are normal, since clients tend to close browser windows/tabs, cancel downloads or just navigate to another page e.g. before loading all images etc. High percentage of this errors may indicate that your site is too slow, but since actual numbers depend heavily on site usage pattern it’s hard to say what is “high”. > It seems that “proxy\_ignore\_client\_abort on;” fix that problem. But why? Is it ok to ignore client aborts? Directive proxy\_ignore\_client\_abort instructs nginx to finish request processing even if client closed connection. It’s safe but usually it’s just waste of resources (since backend response will be thrown away). Maxim D. ---
**Author:** ![funkdoobiest](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/f/13edae/32.png) [@funkdoobiest](https://www.ruby-forum.com/u/funkdoobiest)\ **Post date:** [July 1, 2009, 10:53am UTC](https://www.ruby-forum.com/t/nginx-double-requests-for-my-upstreams/169574/13 "2009-07-01T10:53:39Z")
Hi, the problem of the doubled requests is still there ☹ Here are the lines from the logs: nginx-access-log: 93.210.31.XXX - - [28/Jun/2009:14:11:15 +0200] “GET / HTTP/1.1” 200 2480 “-” “Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.0; GTB6; SLCC1; .NET CLR 2.0.50727; Media Center PC 5.0; .NET CLR 3.0.04506; .NET CLR 1.1.4322)” 87.242.40.XX - - [28/Jun/2009:14:11:16 +0200] “GET / HTTP/1.1” 200 2480 “[DOMAIN.COM - Google Search](http://www.google.hu/search?q=DOMAIN.COM&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:hu:official&client=firefox-a)” “Mozilla/5.0 (Windows; U; Windows NT 5.1; hu; rv:1.9.0.11) Gecko/2009060215 Firefox/3.0.11” 72.30.79.XXX - - [28/Jun/2009:14:11:17 +0200] “GET /index.php?option=com\_content&view=category&id=3&Itemid=13&limitstart=1440 HTTP/1.0” 404 289 “-” “Mozilla/5.0 (compatible; Yahoo! Slurp/3.0; [Why is Slurp crawling my page? | Search for Desktop Help - SLN22600](http://help.yahoo.com/help/us/ysearch/slurp))” 91.17.86.XX - - [28/Jun/2009:14:11:17 +0200] “POST /werbung/ad/fullsize/subpart/1501 HTTP/1.1” 200 176 “[http://www.DOMAIN.COM/live/show/1/](http://www.DOMAIN.COM/live/show/1/)” “Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 2.0.50727; .NET CLR 3.0.04506.30; .NET CLR 1.1.4322)” 217.231.102.XXX - - [28/Jun/2009:14:11:19 +0200] “GET /live/ HTTP/1.1” 200 2959 “[http://www.DOMAIN.COM](http://www.DOMAIN.COM)” “Mozilla/4.0 (compatible; MSIE 5.5; Windows 98; T-Online Internatinal AG)” 213.162.66.XXX - - [28/Jun/2009:14:11:20 +0200] “POST /premium/paypremium HTTP/1.1” 400 0 “[http://www.DOMAIN.COM/premium/getpremium/](http://www.DOMAIN.COM/premium/getpremium/)” “Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.0; GTB6; SLCC1; .NET CLR 2.0.50727; Media Center PC 5.0; .NET CLR 3.0.04506)” 87.242.40.XX - - [28/Jun/2009:14:11:21 +0200] “GET / HTTP/1.1” 200 2480 “[DOMAIN.COM - Google Search](http://www.google.hu/search?q=DOMAIN.COM&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:hu:official&client=firefox-a)” “Mozilla/5.0 (Windows; U; Windows NT 5.1; hu; rv:1.9.0.11) Gecko/2009060215 Firefox/3.0.11” 87.242.40.XX - - [28/Jun/2009:14:11:21 +0200] “GET /DOMAIN/css/style.css HTTP/1.1” 200 18139 “[http://www.DOMAIN.COM/](http://www.DOMAIN.COM/)” “Mozilla/5.0 (Windows; U; Windows NT 5.1; hu; rv:1.9.0.11) Gecko/2009060215 Firefox/3.0.11” 87.242.40.XX - - [28/Jun/2009:14:11:21 +0200] “GET /DOMAIN/css/layout.css HTTP/1.1” 200 3798 “[http://www.DOMAIN.COM/](http://www.DOMAIN.COM/)” “Mozilla/5.0 (Windows; U; Windows NT 5.1; hu; rv:1.9.0.11) Gecko/2009060215 Firefox/3.0.11” 87.242.40.XX - - [28/Jun/2009:14:11:21 +0200] “GET /DOMAIN/css/jScrollPane.css HTTP/1.1” 200 1736 “[http://www.DOMAIN.COM/](http://www.DOMAIN.COM/)” “Mozilla/5.0 (Windows; U; Windows NT 5.1; hu; rv:1.9.0.11) Gecko/2009060215 Firefox/3.0.11” 87.242.40.XX - - [28/Jun/2009:14:11:21 +0200] “GET /DOMAIN/images/favicon.ico HTTP/1.1” 200 1150 “-” “Mozilla/5.0 (Windows; U; Windows NT 5.1; hu; rv:1.9.0.11) Gecko/2009060215 Firefox/3.0.11” 87.242.40.XX - - [28/Jun/2009:14:11:21 +0200] “GET /DOMAIN/javascript/AC\_RunActiveContent.js HTTP/1.1” 200 8321 “[http://www.DOMAIN.COM/](http://www.DOMAIN.COM/)” “Mozilla/5.0 (Windows; U; Windows NT 5.1; hu; rv:1.9.0.11) Gecko/2009060215 Firefox/3.0.11” 62.226.184.XXX - - [28/Jun/2009:14:11:21 +0200] “POST /werbung/ad/fullsize/subpart/1504 HTTP/1.1” 200 176 “[http://www.DOMAIN.COM/live/show/1/](http://www.DOMAIN.COM/live/show/1/)” “Mozilla/5.0 (Windows; U; Windows NT 6.0; de; rv:1.9.0.11) Gecko/2009060215 Firefox/3.0.11” 89.53.233.XXX - - [28/Jun/2009:14:11:21 +0200] “GET /mediacenter/overview/25/ HTTP/1.1” 200 2875 “[http://www.DOMAIN.COM/mediacenter/list/9/2008/](http://www.DOMAIN.COM/mediacenter/list/9/2008/)” “Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.0; GTB6; SLCC1; .NET CLR 2.0.50727; Media Center PC 5.0; .NET CLR 3.0.04506)” 89.53.233.XXX - - [28/Jun/2009:14:11:22 +0200] “GET /mediacenter/overview/25/DOMAIN/images/favicon.ico HTTP/1.1” 404 529 “-” “Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.0; GTB6; SLCC1; .NET CLR 2.0.50727; Media Center PC 5.0; .NET CLR 3.0.04506)” apache-access-log: 10.226.50.67 - - [28/Jun/2009:14:11:20 +0200] “POST /premium/paypremium HTTP/1.0” 200 2330 “[http://www.DOMAIN.com/premium/getpremium/](http://www.DOMAIN.com/premium/getpremium/)” “Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.0; GTB6; SLCC1; .NET CLR 2.0.50727; Media Center PC 5.0; .NET CLR 3.0.04506)” 10.226.50.67 - - [28/Jun/2009:14:11:20 +0200] “POST /premium/paypremium HTTP/1.0” 200 2330 “[http://www.DOMAIN.com/premium/getpremium/](http://www.DOMAIN.com/premium/getpremium/)” “Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.0; GTB6; SLCC1; .NET CLR 2.0.50727; Media Center PC 5.0; .NET CLR 3.0.04506)” There is no entry in the error-logs for this requests. So the problem is not JavaScript or Form-Error. I got double requests for other requests to. Thank you, Jan Posted at Nginx Forum: > **[Re: Nginx double requests for my upstreams?](https://forum.nginx.org/read.php?2,2644,3559#msg-3559)** > > Hi, I have a strange behavior for my site load balanced with nginx. I have 1 Loadbalancer with nginx and 3 servers with apache. sometimes a request is doubled and send to 2 of my apache webservers. this is a big problem for me, because this is... ---
**Author:** ![funkdoobiest](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/f/13edae/32.png) [@funkdoobiest](https://www.ruby-forum.com/u/funkdoobiest)\ **Post date:** [July 13, 2010, 1:37pm UTC](https://www.ruby-forum.com/t/nginx-double-requests-for-my-upstreams/169574/14 "2010-07-13T13:37:27Z")
I also had the same mistakes of double request I try to do proxy\_ignore\_client\_abort on，http\_499 fewer errors, but appeared http\_400 error. the double request at the some time problem still was not solved sever info nginx (gzip)–（static request）–\>squid—\>apache | | (php request ) | | nginx(loadbalance+gzip) | apache I have 1 Loadbalancer with nginx and 4 servers with apache. apache 2.0.59 nginx version: nginx/0.7.65 built by gcc 4.1.2 20080704 (Red Hat 4.1.2-44) configure arguments: --user=www --group=www --prefix=/usr/local/nginx/ –with-http\_stub\_status\_module --with-http\_realip\_module Posted at Nginx Forum: > **[Re: Nginx double requests for my upstreams?](https://forum.nginx.org/read.php?2,2644,108245#msg-108245)** > > Hi, I have a strange behavior for my site load balanced with nginx. I have 1 Loadbalancer with nginx and 3 servers with apache. sometimes a request is doubled and send to 2 of my apache webservers. this is a big problem for me, because this is... ---
**Author:** ![funkdoobiest](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/f/13edae/32.png) [@funkdoobiest](https://www.ruby-forum.com/u/funkdoobiest)\ **Post date:** [July 1, 2009, 11:58am UTC](https://www.ruby-forum.com/t/nginx-double-requests-for-my-upstreams/169574/15 "2009-07-01T11:58:01Z")
Hello! On Tue, Jun 30, 2009 at 10:54:57AM -0400, funkdoobiest wrote: > Hi, > > the problem of the doubled requests is still there ☹ > > Here are the lines from the logs: > > nginx-access-log: […] > 213.162.66.XXX - - [28/Jun/2009:14:11:20 +0200] “POST /premium/paypremium HTTP/1.1” 400 0 “[http://www.DOMAIN.COM/premium/getpremium/](http://www.DOMAIN.COM/premium/getpremium/)” “Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.0; GTB6; SLCC1; .NET CLR 2.0.50727; Media Center PC 5.0; .NET CLR 3.0.04506)” […] Here nginx returned 400 (Bad Request). Since number of bytes sent to client logged as 0 it’s looks like connection has been dropped by client while sending request. It shouldn’t involve any upstream work after error was detected though. > There is no entry in the error-logs for this requests. Some detailed info should be logged at info level. If your config hasn’t changed from initial post - your logging level currently set to error which isn’t enough to see such messages. Could you please try to obtain debug log for such request? Maxim D. ---
**Author:** ![funkdoobiest](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/f/13edae/32.png) [@funkdoobiest](https://www.ruby-forum.com/u/funkdoobiest)\ **Post date:** [July 14, 2010, 4:16am UTC](https://www.ruby-forum.com/t/nginx-double-requests-for-my-upstreams/169574/16 "2010-07-14T04:16:20Z")
I can not find the method is also modified. Posted at Nginx Forum: > **[Re: Nginx double requests for my upstreams?](https://forum.nginx.org/read.php?2,2644,108545#msg-108545)** > > Hi, I have a strange behavior for my site load balanced with nginx. I have 1 Loadbalancer with nginx and 3 servers with apache. sometimes a request is doubled and send to 2 of my apache webservers. this is a big problem for me, because this is...