CO-WORKER: To avoid a repeat of this performance problem, we should work out what decisions we made which caused it ME, WHOSE DECISIONS ALONE CAUSED IT: Look, a bird
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Based on the designs we were given, I assumed we only needed to support 20ish of a thing on the page at once. It turns out we sometimes have 200ish of them, and there are requirements for 2000ish on the horizon
I maintain that, regardless of performance, the page is unusable at that scale and we need a different design, but whatever