A simpler, but less targeted approach that works in case you're not tracking token issuance by ID is to maintain a list of maps of entity (e.g user) ID to minim

A simpler, but less targeted approach that works in case you're not tracking token issuance by ID is to maintain a list of maps of entity (e.g user) ID to minimum issue time. This way you can revoke all earlier tokens for a user ID with a single record, and not have to keep track of issued tokens.