Jpeg image quality is bad

Hi there!

I’m playing around with nginx and I’m running into a problem related to
image uploading. I have nginx as a load balancer and java server (jetty,
spring based) as the backend server. When I upload an image (JPEG) using
POST method via nginx, the quality gets dropped a lot. Please take a
look
at the attached image. If I upload it directly to the backend server, it
gets saved properly. Am I missing anything in the conf file? I really
appreciate your help. Here is my nginx.conf.

http {

  • include /etc/nginx/mime.types;*
  • default_type application/octet-stream;*
  • #access_log /dev/null main;*
  • access_log /data/logs/nginx/access.log main;*
  • log_not_found off;*
  • sendfile on;*
  • #tcp_nopush on;*
  • keepalive_timeout 65;*
  • client_max_body_size 10M;*
  • #gzip on;*
  • include /etc/nginx/conf.d/.conf;
  • upstream backend {*
  •    ip_hash;*
    
  •    server example.com:7070;*
    
  • }*
  • server {*
  •  listen  80;*
    
  •  server_name example.com;*
    
  •  location / {*
    
  •        proxy_pass      http://backend;*
    
  •        proxy_buffering on;*
    
  •  }*
    
  • }*
  • server {*
  •    listen 80;*
    
  •    server_name ~.*;*
    
  •    location / {*
    
  •      access_log off;*
    
  •      return 503;*
    
  •    }*
    
  • }*
    }

Thanks a lot!

-Praveen

Hi,

On Thu, 2013-03-28 at 21:44 -0700, Praveen Yarlagadda wrote:

    ip_hash;

    listen 80;

-Praveen


nginx does nothing whatsoever to images. They’re just files as far as
it’s concerned. It looks like your site must post-process them in some
way… resample, reduce quality, etc???

Cheers,

Steve

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