1. State_Checkpointing
Surviving the Crash: How Distributed Workers Use Checkpoints
A worker that trusts its own memory is a worker that will lose days of progress to a single OOM kill.
Distributed workers don't trust their own survival. A process can die at any moment—OOM kill, hardware failure, rolling deploy—so every worker treats in-memory progress as disposable. The mechanism that bridges volatile memory and durable recovery is state checkpointing: a periodic, atomic snapshot of the worker's state written to storage that outlives the process.
The pattern is simple in s
1m / Article + audio