@wreckingball/cacher NPM

cacher

cacher is an ExpressJS middleware written in TypeScript which caches responses.

$ npm i --save @wreckingball/cacher@vX.Y.Z

See Config in /src/index.ts also src/example.ts. Run $ make dev to run the example.

Respect standard Cache-Control headers:
- no-cache: In GET requests, bypass cache, and returns live response
- no-store: In GET requests, will not cache the response
- max-age:
  - In GET requests, communicates the TTL
  - In GET requests, allows to set per-request TTL
Extend Cache-Control adding delete-cache which invalidates the cache, if any, for the given request
Respect standard HTTP ETag
Allows to specify a matcher:
- Can match any combination of any request component: method || path || query params || header || everything (*)
Future proof, and extensible. It allows to use any storage. Storage can be changed without changing the implementation. Current storage implemented: Redis
- Injects storage in the request chain making it easy to use, and store data
- Automagically cache matched responses
- Automagically delete cache for non-GET operations (which changes data), unless Cache-Control: persist-cache is specified, or feature is disabled.
Cache warmer:
- Every N ms
- One time only
- Configurable after-start-up-delay
- Batch request parallelize request calls speeding up the warming process
- Configurable delay between batch calls to protect the storage from overload
Administrative API:
- Delete cache by key
- Delete whole cache
- Introspect cache by key