This is a submission for DEV's Summer Bug Smash: Clear the Lineup, powered by Sentry.
Submitting for: Clear the Lineup · Best Use of Sentry
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What I liked most is that every optimization started with a measurement, not a guess.
The sentence that stuck with me was that the bug only existed at production scale. That’s a great reminder that performance testing with realistic data volumes is just as important as testing functionality. A fast query against an empty database doesn’t tell you much.
haha , man i did much brainstorming lol
😂 It shows. The nice part is that you didn’t stop at “it’s slow”—you kept measuring until you understood why it was slow. That’s the difference between optimization and guesswork. I also liked that you published the benchmark harness instead of just the final numbers. Makes the results much more trustworthy.
too slow 🔥
yeah man!
Such a satisfying optimization breakdown! Creating a tagged seed generator to catch volume issues in staging was a great move—do you now run those benchmark scripts as part of your CI pipeline or automated testing checks?
Ik ci/cd tests not in full depth but yeah learning those Will write a blog on how we can automate cron job using GitHub!
An empty dev database hides production bugs' is a truth every developer learns the hard way. Writing the idempotent benchmark harness first before even attempting a fix was such a clean, systematic approach.
actually sentry saved me that day
This is a strong debugging post because you included measurements, the real causes, and before-and-after results. I especially appreciated the admission that the invalid comparator did not produce the visible failure you expected. That kind of honesty makes the rest more credible. One question, though: 1.67 seconds still seems fairly long for this dashboard. What accounts for most of the remaining time?
Yeah thats true man
hope @sergical will like this!