Memory Leak issue while upgrading TYK from version 4.3.4 to 5.8.5

Support
1

Hi Team

We recently have upgraded TYK from v4.3.4 to v5.8.5. Initially the memory was at 20% on 3 nodes of TYK each having 4 core CPU and 8GB memory.

But gradually memory kept increasing and in ~2 months the memory on all nodes reached till 80%, we did not have pprof enabled earlier so don’t have any profiling data for memory usage.

Can anybody guide on direction to check what could have caused this leak issue.

2

Hi Mohit

Are you using JWT with JWKS URL caching on your APIs?

I ask, as the cache mechanism in 5.8.5 doesn’t release memory correctly, leading to a gradual increase in consumption over time. That would match the symptoms you are seeing?

I can see that this issue was resolved in version 5.8.6 and later, so an upgrade would resolve this

James