Content Compression via Rack::Deflater,Rails and Ngnix

[kingston.s]

I have followed this content-compression-with-rack-deflater.

In my ngnix.conf

 

      gzip on;
      gzip_http_version 1.0;
      gzip_proxied any;
      # See http://wiki.nginx.org/NginxHttpGzipModule#gzip_types
      # This gets rid of a warning about repeated text/html
      gzip_types text/plain text/xml text/css
             text/comma-separated-values
             text/javascript application/x-javascript
             application/atom+xml;


I have restarted both servers,But the response is coming like this.

    Ҳ�t��₎�U�O�Z�+�x�j����X����R�-

�[ϗ��3Y�J{��阧s5���/������7��ߣs>3�N4�9�u!�.G�ThvMg�.rFj@�

Am using ngnix with openresty,unicorn and rails 3.2,Please see my request and response headers.


 Request Header:

   Accept    text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
   Accept-Encoding    gzip, deflate
   Accept-Language    en-US,en;q=0.5
   Cache-Control    no-cache
   Connection    keep-alive
   Cookie    locale=en; _Microsite_session=3bpa2ja8gb17
   Host    mylocal-admin
   Pragma    no-cache
   User-Agent    Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:31.0) Gecko/20100101 Firefox/31.0

 Response Header

    Cache-Control    max-age=0, private, must-revalidate
    Connection    keep-alive
    Content-Encoding    gzip
    Content-Type    text/html; charset=utf-8
    Date    Thu, 22 Jan 2015 12:35:12 GMT
    Etag    "3445b84f524a0746633c15"
    Server    nginx
    Status    200 OK
    Transfer-Encoding    chunked
    Vary    Accept-Encoding
    X-Request-Id    7b448590af53df7a6d91c
    X-Runtime    2.599340
    X-UA-Compatible    IE=Edge

Could anyone please help me to solve this issue.

[Daniel Loureiro]

>I have restarted both servers,But the response is coming like this.
>
>    Ҳ�t��₎�U�O�Z�+�x�j����X����R�-

>�[ϗ��3Y�J{��阧s5���/������7��ߣs>3�N4�9�u!�.G�ThvMg�.rFj@�
>
>Am using ngnix with openresty,unicorn and rails 3.2,Please see my request and response headers.

Hi kingston,

maybe I'm wrong but I think that you are compressing the same html 2 times: first your Rack compress and send via Puma, then your nginx get this and compress again. The browser only decompress 1 time and think that the result is the final text. Try to disable your ngnix compression and check if in the "Response Header", the "Content-Encoding" will still getting a "gzip" result. Also, for your assets, its better to use the precompiled gzip that Rails produces than compile on-the-fly - this will reduce your server load considerably (check the 4.1.2 item - "GZip Compression": http://guides.rubyonrails.org/asset_pipeline.html#precompiling-assets).

--

Daniel Loureiro

[kingston.s]

Thanks for you reply Loureiro

I have disabled nginx compression and checked but result is same.

Thanks,
Kingston.s