How to Handle API Tokens That Expire During a Long-Running Job

An API job that runs for hours may succeed initially, then fail when its access token expires. Restarting the entire job can duplicate records or repeat expensive operations. The integration needs a secure refresh flow and a checkpoint that records what has already completed.

Check the authentication lifecycle

Review token lifetime, refresh-token rules, clock synchronization, and the provider's response for expiration. Confirm that secrets are stored in a protected location and are not written to logs. Ensure the job can refresh before expiry without requiring a person to paste credentials into a running process.

• Checkpoint each completed page or record range.
• Use stable identifiers so retrying a batch does not duplicate writes.
• Handle revoked refresh tokens with an alert and controlled recovery.
• Test expiration and reauthentication in a non-production environment.

Informatix Systems lists custom software and API integrations. A design review can assess authentication, checkpoints, and retry safety. Contact Informatix Systems if long-running syncs fail at token expiry.