The event is not obtained from the apiserver cache

[Black-max12138]

What happened?

When /api/v1/namespaces/sop/events is requested, data is obtained from etcd instead of the apiserver cache. When there are too many events, etcd memory increases.

What did you expect to happen?

We expect that when /api/v1/namespaces/sop/events is requested, data is also fetched from the apiserver cache

How can we reproduce it (as minimally and precisely as possible)?

Request /api/v1/namespaces/sop/events. Check the etcd logs. It is found that data is directly obtained from etcd instead of apiserver cache.

Anything else we need to know?

No response

Kubernetes version

$ kubectl version
# 1.28

Cloud provider

OS version

# On Linux:
$ cat /etc/os-release
# paste output here
$ uname -a
# paste output here

# On Windows:
C:\> wmic os get Caption, Version, BuildNumber, OSArchitecture
# paste output here

Install tools

Container runtime (CRI) and version (if applicable)

Related plugins (CNI, CSI, ...) and versions (if applicable)

[k8s-ci-robot]

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[Black-max12138]

/sig api-machinery

[olderTaoist]

/api/v1/namespaces/sop/events is List request？if it is List request，due to without resourceVersion，the default behavior is directly obtained from etcd, you can use ConsistentListFromCache feature gate change fetching data from the apiserver cache

[Black-max12138]

/api/v1/namespaces/sop/events is List request？if it is List request，due to without resourceVersion，the default behavior is directly obtained from etcd, you can use ConsistentListFromCache feature gate change fetching data from the apiserver cache

Yes, this is a list request, and the request carries resourceVersion, but why is it not cached?

[olderTaoist]

/api/v1/namespaces/sop/events is List request？if it is List request，due to without resourceVersion，the default behavior is directly obtained from etcd, you can use ConsistentListFromCache feature gate change fetching data from the apiserver cache

Yes, this is a list request, and the request carries resourceVersion, but why is it not cached?

you can refer to shouldDelegateList, the reason maybe is the request with resourceVersionMatch="Exact" query.