Client-side SDKs

The following items apply to all client-side and mobile SDKs.

Application does not block on identify

Calls to identify return a promise that resolves when flags for the new context have been retrieved. In many applications, using the existing flags is acceptable and preferable to blocking in a situation where flags cannot be retrieved.

Implementation

• MAY Continue without waiting for the promise to resolve
• SHOULD Implement a timeout when identify is called

Validation

• Pass The application is able to function after calling identify while the SDK domains are blocked: clientsdk.launchdarkly.com or app.launchdarkly.com

Application does not rapidly call identify

In mobile and client-side SDKs, identify results in a network call to the evaluation endpoint. Make calls to identify sparingly. For example:

Good times to call identify:

• During a state transition from unauthenticated to authenticated
• When a attribute of a context changes
• When switching users

Bad times to call identify:

• To implement a currentTime attribute in your context that updates every second
• Implementing contexts that appear multiple times in a page such as per-product