Workers Cache

3 hours ago

Workers Cache is a tiered cache placed in front of Workers, configured via a simple Wrangler config and Cache-Control headers.
It enables cache hits to return cached responses without running the Worker, saving CPU time, and populates the cache on misses.
Configuration is minimal: a single config block in wrangler.jsonc with caching enabled, controlled by Cache-Control headers on responses.
Features include stale-while-revalidate for background refreshes, Vary header support for content negotiation, and per-entrypoint caching control.
The cache is tied to the Worker, not a zone, allowing it to work across domains, workers.dev, previews, and Workers for Platforms.
It supports multi-tenant safety via ctx.props in cache keys, ensuring separate cache entries per user or tenant for authenticated requests.
Workers Cache integrates with frameworks like Astro, offers observability on the dashboard, and has no separate pricing SKU.

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