Answer
Clients reconnect using last resourceVersion; API sends all missed events.
Quick Answer
Kubernetes Watches use etcd's watch mechanism with a bookmark system. After reconnection, clients send their last received resourceVersion — etcd replays all events since that version. If the version is too old (compacted away), the API server returns a "too old resource version" error, triggering a full re-list. Etcd compaction is configured with a retention window to balance history vs storage.
S
SugharaIQ Editorial Team
Verified Answer
This answer has been peer-reviewed by industry experts holding senior engineering roles to ensure technical accuracy and relevance for modern interview standards.
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Source: SugharaIQ