The bug that only appeared on Fridays
A cache warm-up running on a schedule nobody remembered setting. A short story about assumptions hidden in configuration.
Related
Keep reading
Designing a URL shortener
The classic interview system, built small and measured: where the reads go, what the cache is for, and the one decision that made everything else easy.
Redis caching: the invalidation I got wrong first
Cache-aside looked simple until two writers raced. What I changed, and what I would measure before adding a cache next time.
A problem I struggled with
Two weeks on a deadlock that turned out to be a lock-ordering mistake in code I had reviewed twice.
Next
Something here worth a reply?
If this entry raised a question, or you think I have got something wrong, I would much rather hear it than not.
Get in touch