bharos opened a new issue, #10746:
URL: https://github.com/apache/gravitino/issues/10746
### What would you like to be improved?
**Cache `JWKSource` at initialization** —
`JWKSourceBuilder.create(url).build()` is currently
called on every `validateToken()` invocation, potentially triggering an
HTTP fetch to the JWKS
endpoint per request. The Nimbus `JWKSource` already provides built-in
caching (5 min TTL),
refresh-ahead, and rate-limiting, so a single instance should be created
once in `initialize()`
and reused.
### How should we improve?
- Avoids unnecessary network overhead and latency from per-request
`JWKSource` creation.
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