JWT token performance issue when renew_token_without_revoking_existing is enabled

[sanjulamadurapperuma]

Describe the issue:

A delayed response time can be observed when the renew_token_without_revoking_existing config is set to true in IS v5.11.0 (shown below).

[oauth.jwt.renew_token_without_revoking_existing]
enable = true
allowed_grant_types = ["password", "client_credentials", "refresh_token"]

Furthermore, the response time continues to get worse when the number of tokens in the DB increases. This needs to be fixed.

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Suggested labels:

[KD23243]

The issue has been resolved, and the fix has been merged into the master branch [1]. Additionally, the migration documentation has been updated. Therefore this issue is can be closed.

[1] wso2-extensions/identity-inbound-auth-oauth#2630