Home » Developer & Programmer » Application Express, ORDS & MOD_PLSQL » mod_deflate and APEX (APEX 20.x, httpd 2.4.x)
mod_deflate and APEX [message #682171] Wed, 07 October 2020 09:51
John Watson
Messages: 8426
Registered: January 2010
Location: Global Village
Senior Member
I'll be building some new machines for APEX environments soon, and I am wondering whether I should enable mod_deflate in the Apache reverse proxies. I've had suggestions that I should.

It seems to be straightforward, the module is there so all I need do is uncomment the line that loads it and specify a few MIME types for compression, for example:
LoadModule deflate_module modules/mod_deflate.so

<IfModule mod_deflate.c>
  AddOutputFilterByType DEFLATE application/javascript
  AddOutputFilterByType DEFLATE application/rss+xml
  AddOutputFilterByType DEFLATE application/vnd.ms-fontobject
  AddOutputFilterByType DEFLATE application/x-font
  AddOutputFilterByType DEFLATE application/x-font-opentype
  AddOutputFilterByType DEFLATE application/x-font-otf
  AddOutputFilterByType DEFLATE application/x-font-truetype
  AddOutputFilterByType DEFLATE application/x-font-ttf
  AddOutputFilterByType DEFLATE application/x-javascript
  AddOutputFilterByType DEFLATE application/xhtml+xml
  AddOutputFilterByType DEFLATE application/xml
  AddOutputFilterByType DEFLATE font/opentype
  AddOutputFilterByType DEFLATE font/otf
  AddOutputFilterByType DEFLATE font/ttf
  AddOutputFilterByType DEFLATE image/svg+xml
  AddOutputFilterByType DEFLATE image/x-icon
  AddOutputFilterByType DEFLATE text/css
  AddOutputFilterByType DEFLATE text/html
  AddOutputFilterByType DEFLATE text/javascript
  AddOutputFilterByType DEFLATE text/plain
  AddOutputFilterByType DEFLATE text/xml
</IfModule>
The Oracle doc here
https://docs.oracle.com/middleware/12213/webtier/administer-ohs/GUID-37CEBCE0-7480-468C-9197-C5943B65AC67.htm#HSADM368
does seem to recommend it, but I have read that for small objects of just a few hundred bytes compression may not be a Good Thing. Does anyone have a feeling for compression and APEX applications? Do you always, never, or sometimes enable it?
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