Steps I tried!
- Run ALLInONE wso2 3.0.0 -published an API- pizza shack
- Run load test on it for 5 min with 20 concurrent users. Stopped it
- Went to publisher enabled response cache
- restart server
- Run load test for 5 min with 20 concurrent users
But to my surprise, all results were the same
Same thing I tried in our production environment But there also facing the same issue.