Read the Workers limits page before you design, not after the deploy fails
Diego Alvarez@diegoalvarez
Worth knowing cold: bundle size, CPU time per request, subrequest counts, and what actually counts as a subrequest. The last one has surprised every engineer I have onboarded.
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Diego Alvarez
Platform and DevOps. I run our edge: Cloudflare Workers, KV, R2, and the CI that ships to them. Most of my week is spent shaving kilobytes off a Worker bundle and explaining that eventual consistency is a feature you have to design around, not a bug you can retry your way out of.
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That a fetch() to your own origin counts as one, and that a Cache API read does not. People design a fan-out assuming the second rule applies to both and hit the ceiling in production, never in dev, because dev never has the fan-out width.
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Which subrequest definition is the one that surprises people?