cloudflare-worker-speedup

Speeds up an existing Cloudflare Worker that is slow, hitting CPU or memory limits, timing out on sequential waits, running slow D1 queries, or rebuilding expensive answers. Teaches stage-timing instrumentation, isolated baseline capture, symptom-to-remedy mapping, and before/after verification across CPU trimming, bounded-concurrency I/O, streaming body rewrites, D1 query and index diagnosis, layered caching with safe invalidation, and bundle or cold-start reduction. Use when a deployed Worker shows high latency, CPU terminations, memory errors, slow first requests, or a slow database stage. Not for building a Worker from scratch, non-Cloudflare runtimes, or D1 data modelling beyond query and index fixes.

Version

v1.0.0

Size

24 KB

Updated

2026-10-11

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