CacheKit gives applications one deliberate cache contract without hiding provider differences. Core imports have no provider SDK dependencies; provider entrypoints load their SDK only when you use them.

Install

npm install @mohamedhabibwork/cachekit

Quick start

import { createCache } from '@mohamedhabibwork/cachekit';

const cache = await createCache({
  type: 'memory',
  namespace: 'catalog:v1',
  defaultTtl: '10m',
});

await cache.set('product:42', { id: 42, name: 'Keyboard' }, {
  ttl: '5m',
  tags: ['products', 'product:42'],
});

const product = await cache.get<{ id: number; name: string }>('product:42');

Supported in 0.1

Provider	Import	Status
Memory	`@mohamedhabibwork/cachekit` or `/memory`	Complete in-process provider: TTL, SWR, tags, local locks, codecs.
Redis protocol	`@mohamedhabibwork/cachekit/redis`	Optional `redis` peer dependency; works with Redis-compatible endpoints. Tags and namespace clear deliberately report unsupported.
Custom	`@mohamedhabibwork/cachekit`	Register an application provider with the public contract.

The architecture plan tracks planned profiles and embedded drivers. They are not published as empty entrypoints: importing a package path always means a usable implementation exists.

Redis

npm install @mohamedhabibwork/cachekit redis

import { createRedisCache } from '@mohamedhabibwork/cachekit/redis';

const cache = await createRedisCache({
  url: process.env.REDIS_URL,
  namespace: 'catalog:v1',
  defaultTtl: '10m',
});

await cache.set('product:42', { id: 42 }, { ttl: '5m', native: { NX: true } });

The generic factory also supports Redis directly: createCache({ type: 'redis', url: process.env.REDIS_URL }). The optional SDK is still loaded only when that provider is created.

You may inject a compatible client with sendCommand() instead of letting CacheKit create one. If redis is missing, the provider throws CacheDependencyMissingError with its installation command.

Semantics

A cache miss is undefined; null is cacheable.
ttl is the fresh period; staleTtl is an additional stale window. get() returns fresh values only; get(..., { allowStale: true }) can return in-window stale data.
getOrSet() deduplicates concurrent loads within a process. With a stale entry it returns the stale value while one local caller refreshes it, unless serveStale: false.
Built-in codecs are json (default), text, and bytes. Custom codecs must have a name, encode, and decode.
Keys and tags reject control characters. Namespaces use an unambiguous internal separator.
Inspect cache.capabilities before relying on a non-portable operation such as distributed locks or tags.

Development

npm ci
npm run check

npm run check lints, typechecks, tests, and produces dual ESM/CJS output. The CI workflow covers Node 20/22/24 plus Bun and Deno smoke tests. Pushing a v* tag runs the provenance-enabled publish workflow; see publishing.