Black hole singularity is a surface not a point
We haven't written up this one. Hacker News has the full story — the link below goes straight to it.
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That Time Client Retries Turned a Recovery Into a 7-Hour Outage
GitHub had an interesting incident last August. A component in Central US failed under load, and when it started recovering, the recovery took much longer than it should have.
- Clients repeatedly retried connections after brief outage, causing flood of requests
- System partially recovered, but retries flooded it again, creating loop
- Recommended solution: exponential backoff with jitter to spread out retry load