cacheable-js

Create a Cacheable instance with a Keyv primary using CacheableMemory and a secondary from @keyv/redis's createKeyv. Set default ttl, maxTtl, and a namespace so reads promote L2 hits into L1 automatically.

Cacheable provides full L1/L2 caching with hooks, events, stats, tags, and sync, while cache-manager targets NestJS compatibility with a simpler multi-store API. Both return undefined on cache misses in current versions.

Enable tags: true on every instance sharing the store, then pass tags when calling set or setMany. Invalidate entries with cache.tags.invalidateTag, with tag metadata stored in the shared secondary store for cross-instance visibility.

Yes, Cacheable supports distributed sync through a Qified message provider such as RedisMessageProvider. Sync updates only the primary storage of peer instances and is eventually consistent, so each service should use its own namespace.

Cacheable and cache-manager v7 return undefined on cache misses by design. Avoid storing null sentinels and check for undefined explicitly when handling misses in application code.

Use wrap to memoize a function across many call sites with a key prefix or custom key serializer. Use getOrSet for cache-aside reads where you load a single key on demand with a TTL.