Tuning widget performance

• Test your widget on a blank page $sp.do
• Check angular watchers using browser tools
  • https://github.com/tiagojsalmeida/angular-watchers
  • https://github.com/angular/batarang
• Use one-time binding wherever possible
• Don’t use $timeout
  • use scope.$evalAsync() or scope.$applyAsync()
• If you are using recordwatchers make sure you are looking for specific records not big queries with lots of changing records.
• Avoid auto refreshing widgets
  • Don’t call server.update() inside a timeout()
• Avoid using angular filters
  • Use javascript functions to pre sort and filter your collections
• Use ng-if instead of ng-show
• Use a shared data service so that widgets don’t have to fetch the same data from the server
• Use a scripted rest API for getting data
  • Calling server.update() can be costly since it also returns the widget template, client script, and widget dependencies.