Bear Service Outage Analysis: Reverse Proxy Failure and Mitigation Steps
By
shaunpud
Slow-proofed and worth the wait. Worth its weight in flour.
Summary
The article details a major outage experienced by Bear (a web service) on October 25th, where the reverse proxy handling custom domains failed, causing timeouts. The author explains they didn't receive monitoring notifications and discovered the issue late on a Saturday. The post analyzes the root cause of the outage, discusses the technical failure, and outlines mitigation steps taken to prevent future occurrences. The context mentions the ongoing 'web-scraping arm race' as additional background.
Key quotes
· 3 pulledOn the 25th of October Bear had its first major outage. Specifically, the reverse proxy which handles custom domains went down, causing custom domains to time out.
Unfortunately my monitoring tool failed to notify me, and it being a Saturday, I didn't notice the outage for longer than is reasonable. I apologise to everyone who was affected by it.
First, I want to dissect the root cause, exactly what went wrong, and then provide the steps I've taken to mitigate this in the future
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