= Optimisation =
There are many things which can be done to optimise the performance, so of them will be minor and some of them may require larger changes. The two goals are:
 * Faster
 * Less Bandwidth (smaller pages and/or more caching)

== 1) Develop Automated Performance Metrics ==
Before Sahana Eden can be effectively optimised, we need a set of performance metrics to optimise to. 
Metrics should:
 * Test as wide as wide a variety of the code as possible.
 * Be able to be automatically tested (''See:'' DeveloperGuidelinesTesting).
 * Cover different usage scenarios
  * Low bandwidth
  * High number of users 
The Automated Performance Metrics, will also allow us to better share performance statistics of Sahana Eden.

== 2) Make Enhancements to Sahana Eden == 
Once the metrics have been developed enhancements can be made to improve these. These enhancement 
 * Using Profiler Tools to identify parts of the code which require more computation (http://eden.sahanafoundation.org/wiki/DeveloperGuidelinesOptimisation#Profiling).
 * Avoid excess DB calls, Use web2py's {{{cache}}} instead
 * Move as much JS to static files
 * Investigate the possibility of loading large page components using AJAX
 * Download/execute scripts asynchronously:
  * http://headjs.com/
  * http://labjs.com
  * http://requirejs.org

''See Also:''
 * DeveloperGuidelinesOptimisation