#plugin-cache

Concurrent PostCSS Requests Cause Latency Spikes Due to Shared Plugin Cache

Symptom When multiple postcss.process calls execute simultaneously on the same PostCSS instance, the average latency per request rises noticeably. The spike appears only under concurrent load, not during isolated runs. Context PostCSS exposes an async process API intended for parallel use. Internally the framework maintains a plugin registry and a cache of p