[cvs] commit: imp/config conf.xml imp/docs CHANGES imp/lib IMP.php

[Michael M Slusarz]

slusarz     2008-05-05 19:33:16 EDT

  Modified files:
    config               conf.xml 
    docs                 CHANGES 
    lib                  IMP.php 
  Log:
  Rework cached/compressed versions of CSS and JS files.  Add additional way
  of storing - via static files in local filesystem.  These files can then be
  directly accessed by the browser.  Advantages:
  1. Guaranteed that these files will always match the latest CSS/JS original
  code.  Browsers do not mark a cached file as expired if information is given
  in URL parameters (at least it doesn't work reliably cross browser) so there
  is no way to reliably indicate to a browser that the data has changed without
  eliminating caching totally (which we want). The only way to do this is to
  change the actual name of the file, which can only be done to static files.
  This is the way that Yahoo, for example, handles the expire issue with
  static info. See http://developer.yahoo.com/performance/rules.html#expires
  2. Reduced load on server. Even though we don't do authentication on these
  PHP cache accesses, we do have to build a minimal session (including loading
  session data) to serve the file via Horde_Cache. Static files eliminate
  that need.
  Disadvantages:
  1. Is not 100% automatic - the admin has to setup the necessary directory
  on the server.
  2. If using a FastCGI setup where php processes are located on a different
  server from the HTTP servers, then NFS or equivalent will need to be setup
  in order for the HTTP servers to be able to serve the generated output.
  
  Also, remove mtime parameter - there is no reason we should ever not check
  the modified time before serving the cached file.
  
  The IMP config parameters have changed and won't work with the previous values
  so be sure to update conf.php.
  
  Revision  Changes    Path
  1.124     +33 -22    imp/config/conf.xml
  1.1119    +2 -0      imp/docs/CHANGES
  1.677     +105 -36   imp/lib/IMP.php

  Chora Links:
  http://cvs.horde.org/diff.php/imp/config/conf.xml?r1=1.123&r2=1.124&ty=u
  http://cvs.horde.org/diff.php/imp/docs/CHANGES?r1=1.1118&r2=1.1119&ty=u
  http://cvs.horde.org/diff.php/imp/lib/IMP.php?r1=1.676&r2=1.677&ty=u