runtime-cache

You can cache API responses across Vercel serverless functions by using ephemeral key-value storage to persist computed data regionally. This prevents redundant computations and database hits during function invocations.

Tag-based cache invalidation is a method to efficiently purge related cache entries using granular tags within Vercel serverless environments. It facilitates performance optimization while ensuring data consistency when underlying data changes.

Set up a cached fetch request on Vercel by configuring a key-value store entry with a specific time-to-live and associated tag. This caches expensive API responses like blog-posts endpoints for designated durations such as one hour.

Yes, you can maintain ephemeral state regionally across Vercel Functions, Middleware, and Builds. This regional persistence ensures low-latency data sharing across multiple serverless functions within specific regions.

Yes, the @vercel/functions SDK supports granular cache control for managing ephemeral key-value storage. It implements tag-based invalidation to ensure data consistency and reduce origin load across serverless environments.

The best way to reduce origin load for expensive computed data is implementing ephemeral caching with tag-based invalidation. This approach caches computed data objects across serverless functions while allowing instant invalidation when underlying data changes.