Before It Evicts Your Node, the Node Controller Checks Its Own Cache
Before evicting a node on an expired lease, the node controller re-reads the lease live; if the resource versions differ the cache is stale and the whole pass is aborted.
Controllers
Expectations: How a Controller Waits for Its Own Writes to Come Back
Expectations are a pair of atomic counters per controller: raised before a write, lowered by the informer when the write comes back, and checked before every sync.
Not a Random Suffix: The Deployment Hash and Its Collision Counter
The Deployment hash is FNV-32a over the pod template, salted by a persisted status.collisionCount that is bumped only on a genuine collision.
Solid, Dangling, Waiting: How the Garbage Collector Decides to Delete
The GC asks the API server whether each owner still exists, sorts the references into solid, dangling and waiting, and only deletes when every owner is gone.