NodeJS Cache (node-cache)

A NodeJS package that makes it easy to cache objects and files locally and in AWS

Install

npm install @makerx/node-cache

Usage

The primary purpose of this package is to make it easy to cache objects and files.

import { S3 } from '@aws-sdk/client-s3'
import { FileSystemObjectCache, S3ObjectCache } from '@makerx/node-cache'

const cache =
  process.env.CACHE_BUCKET_NAME === 'local'
    ? new FileSystemObjectCache(path.join(__dirname, '../.cache'))
    : new S3ObjectCache(
        new S3({
          region: process.env.AWS_REGION,
        }),
        process.env.CACHE_BUCKET_NAME,
        'optional/cache/prefix',
      )

for (let i =0; i < 10; i++>) {
  const value = await cache.getAndCache('test', async (existing: {test: number} | undefined) => {
    await new Promise(resolve => setTimeout(resolve, 100))
    const e = existing ?? {test: 1}
    e.test++
    return e
  }, {
    staleAfterSeconds: 1
  })
  console.log(value)
  await new Promise(resolve => setTimeout(resolve, 500))
}

await cache.put('test', {test: 100})

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