The Reliability Envelope I Didn't Finish
An honest accounting of what this job queue guarantees, what it doesn't, and the config settings that do nothing at all.
#reliability
6 posts
What 'Processing' Means When the Worker Is Gone
A status column records what a job was doing. It cannot record whether anyone is still doing it.
A Timeout Doesn't Stop the Work
Deadlines protect the worker, not the job. Once blocking code is involved, the difference stops being academic.
Retries, Backoff, and Why Jitter Is Not Optional
Retrying is easy. Deciding when to retry, and making sure everyone doesn't decide the same thing, is the actual work.
The Server Forgets Everything and That's Fine
Rooms live in memory and get thrown away. The client is the persistence layer, which changes what reconnecting means.
What Happens When One Client Can't Keep Up
Every broadcast loop contains an assumption that send() works. Backpressure is what you build when it doesn't.