# Show nginx, expert.io Marketplace for your expertise!

**URL:** <https://www.ruby-forum.com/t/show-nginx-expert-io-marketplace-for-your-expertise/204103>\
**Category:** NGINX\
**Created:** [March 5, 2011, 1:50am UTC](https://www.ruby-forum.com/t/show-nginx-expert-io-marketplace-for-your-expertise/204103 "2011-03-05T01:50:10Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![luislavena](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/l/0ea827/32.png) [@luislavena](https://www.ruby-forum.com/u/luislavena)\
**Post date:** [March 5, 2011, 1:50am UTC](https://www.ruby-forum.com/t/show-nginx-expert-io-marketplace-for-your-expertise/204103/1 "2011-03-05T01:50:10Z")

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Hi, fellow nginx users!

I started learning nginx this year and here is a small project I built  
using nginx as web server.  
Marketplace for your expertise  
[http://expert.io](http://expert.io)

But I do have some question to ask if it is appropriate. As I am using  
nginx as the front end, it would sometimes show a 502 error which I have  
no idea what it is about.  
The system is deployed with gunicorn + gevent.

Please leave any comment or suggestion!

Thank you for your time.

Cheers,

Justin

Posted at Nginx Forum:

> **[show nginx, expert.io Marketplace for your expertise!](https://forum.nginx.org/read.php?2,180550,180550#msg-180550)**
>
> Hi, fellow nginx users! I started learning nginx this year and here is a small project I built using nginx as web server. Marketplace for your expertise http://expert.io But I do have some question to ask if it is appropriate. As I am using nginx as...

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**Author:** ![expertio](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/e/cdc98d/32.png) [@expertio](https://www.ruby-forum.com/u/expertio)\
**Post date:** [March 5, 2011, 11:08am UTC](https://www.ruby-forum.com/t/show-nginx-expert-io-marketplace-for-your-expertise/204103/2 "2011-03-05T11:08:04Z")

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Hello!

On Fri, Mar 04, 2011 at 07:47:37PM -0500, expertio wrote:

[…]

> But I do have some question to ask if it is appropriate. As I am using  
> nginx as the front end, it would sometimes show a 502 error which I have  
> no idea what it is about.  
> The system is deployed with gunicorn + gevent.

Error 502 indicate that there is a problem with your backend(s).  
Excat reasons for 502 errors are logged into error\_log at “error”  
level. Don’t hesitate to look into it.

Maxim D.