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Feature Flag Analytics

note

This feature is currently available in the Javascript SDK. We are working on adding this feature to the other SDKs.

Overview#

Flag Analytics allow you to track how often individual Flags are evaluated within the Flagsmith SDK.

To view Analytics for a particular flag, browse to the relevant environment and click on a single flag to edit that flag.

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Flag Analytics can be really useful when removing flags from Flagsmith. More often than not, flags can be removed from your codebase and platform once they have been rolled out and everyone is comfortable with them running in production.

Once you have removed the evaluation code from your code base, its nice to be sure that all references to that flag have been removed, and that removing the flag itself from Flagsmith will not cause any unforeseen issues. Flag Analytics help with this.

Flag Analytics can also be helpful when identifying integration issues. Occasionally errors can creep into your code that cause multiple needless evaluations of a flag. Again, these analytics can help isolate these situations.

SDK Support#

We currently support Flag Analytics with the following SDKs:

We are working to build integrate Flag Analytics with our other SDKs but happy to take Pull Requests!

How does it work?#

Every time a flag is evaluated within the SDK (generally a call to a method like flagsmith.hasFeature("myCoolFeature")), the SDK keeps a track of the flag name along with an evaluation count.

Every n seconds (currently set to 10 seconds in the JS SDK) the SDK sends a message to the Flagsmith API with the list of flags that have been evaluated and their count. If no flags have been evaluated in that time window, no message is sent.