Everyone’s talking about how you MUST hit the database for revocations / invalidations, and how it may defeat the purpose.

How is no one thinking of a mere pub-sub topic? Set the TTL on the topic to whatever your max JWT TTL is, make your applications subscribe to the beginning of the topic upon startup, problem solved.

You need to load up the certificates from configuration to verify the signatures anyways, it doesn’t cost any more to load up a Kafka consumer writing to a tiny map.