Runtime logs now show cache reasons
Vercel has updated its runtime logs to include cache reasons, giving developers insight into why a particular request was served from cache or resulted in a cache miss. The change is documented in a changelog entry titled "Runtime logs now show cache reasons" on Vercel's official website. By surfacing the specific reason for each cache decision, such as whether the cache was bypassed, expired, or matched, the feature aims to simplify debugging of caching behavior. This allows developers to identify and address performance bottlenecks without needing to infer cache logic from indirect metrics. The update applies to runtime logs generated by Vercel's serverless functions and edge deployments, though the exact scope of affected services is not detailed in the source. No specific version numbers or release dates beyond the changelog publication date are provided.
Developers can now directly see why cache decisions occur, simplifying debugging of performance issues.