infinicache

A cache for Node.js that can use all available system memory without crashing. It's based on WeakRef and FinalizationRegistry.

Install

npm i infinicache

Usage

import Cache from 'infinicache'
import { promisify } from 'util'

const immediate = promisify(setImmediate)

const cache = new Cache({
  ttl: 5 // seconds
})

// Create a scope so that obj goes
// out of scope
{
  const obj = { foo: 'bar' }
  cache.set('hello', obj)
  console.log(cache.get('hello'))
}

await immediate()

// We need to allocate a bazillion amount of objects
// to trigger a GC
const data = []
for (let i = 0; i < 1000000; i++) {
  data.push({ i })
}

console.log(cache.get('hello'))

Note that this Cache is slower than most LRU caches. If you are looking for an LRU cache, use mnemonist LRUCache.

License

MIT