feature toggles

• toggling features on/off
• user and/or tenant based
• experimenting
• phased rollouts
• less branching

show me code..

if(featureFlags.isOn('fuzzy-router')) {
  //.. do stuffs
}
          

an example..

experiment..

user creation

using a modal (A)

using a page (B)

measuring

• time to create
• saves per view

code please..

function showCreateUser(user, trackers) {
  if(featureFlags.isOn('ST01B')) {
    // navigate to page
  } else {
    // show dialog
  }
}
          

an example..

analytics

• piwik events
• this sucked..

show me code..

function showCreateUser(user, trackers) {
    var experiment = 'ST01: Admin User Create',
        variant    = 'ST01A: Admin User Create Modal',
        timeTracker = trackers.get(experiment, variant, 'Time on Page'),
        saveTracker = trackers.get(experiment, variant, 'Saved User');
    if(featureFlags.isOn('ST01B')) { // ... 
    } else {
        timeTracker.trackPromise( // <- tracks how long the dialog is open
            UserCreateDialog.show()
                .then(function(user) {
                    saveTracker.trackEvent(1); // <- tracks save
                }).catch(function() {
                    saveTracker.trackEvent(0); // <- tracks non-save
                }));
    }
}