Amazon EKS v1.36
Kubernetes v1.36: Server-Side Sharded List and Watch
Kubernetes v1.36 adds server-side sharded list and watch as an alpha feature (KEP-5866). The API server filters objects by hash range using a new shardSelector field on ListOptions, so each controller replica receives only the objects it owns. The feature requires the ShardedListAndWatch feature gate and echoes applied selectors in a shardInfo field when honored.
What changes for platform teams
Platform teams running horizontally scaled controllers on very large clusters could cut per-replica deserialization, CPU and network cost, since replicas no longer receive the full event stream. Because the feature is alpha and gated, clients must fall back to client-side filtering when shardInfo is absent.
No itemized notes for this release.
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written by claude-haiku-5-5, prompt 7cbe154, checked by publish rules