The Informer Will OOM If You Are Too Slow: An Unbounded Ring Buffer, On Purpose
Each informer listener buffers notifications in an unbounded growing ring; a handler too slow to drain it will OOM the process, by design.
Client go
Two Sets and a FIFO: The Whole Concurrency Model of the Kubernetes Workqueue
The Kubernetes workqueue is a FIFO plus a dirty set plus a processing set; together they give per-item mutual exclusion and automatic coalescing of repeated Adds.
The Reflector Refuses to Publish a Resource Version It Hasn't Earned
The reflector tracks eventReceivedBesidesAdded and only publishes the resource version once it knows it is past the synthetic ADDED burst.
One Stream Instead of Two: The Watch List That Killed LIST + WATCH
The watch-list path turns LIST+WATCH into one WATCH stream: synthetic ADDED events, an end-of-initial-events bookmark, then live deltas on the same connection.