900900 Authentication failure occurs in high concurrency. Http Code is 500

[mxh10]

Description

We use the MGW 3.2.0/3.2.1, and recently found a problem that comes up with a lot of frequency.

When the number of concurrent requests reaches a certain level, http 500 will be returned to the request API, and the returned information is
{"fault":{"code":900900, "message":"Unclassified Authentication Failure", "description":"Unclassified Authentication Failure. Unclassified Authentication Failure"}}".

Please help me on this question. Thanks!

Steps to Reproduce

We changed the following configuration in micro-gw.conf, tokenCacheExpiryTime = 86400
[caching]
tokenCacheExpiryTime = 60
tokenCacheCapacity = 10000
tokenCacheEvictionFactor = 0.25

however, a 900900 error was still found in the test.

We tried refreshing the Access Token to avoid this exception, but it didn't work either. He still reappears, just less often.

Version

MGW 3.2.0/3.2.1

Environment Details (with versions)

docker

Relevant Log Output

No response

Related Issues

No response

Suggested Labels

No response