keyv-file

File storage adapter for Keyv, using json to serialize data fast and small.

File storage adapter for Keyv.

TTL functionality is handled internally by interval scan, don't need to panic about expired data take too much space.

Install

npm install --save keyv keyv-file

Usage

Using with keyv

const Keyv = require('keyv')
const { KeyvFile } = require('keyv-file')

const keyv = new Keyv({
  store: new KeyvFile()
});
// More options with default value:
const customKeyv = new Keyv({
  store: new KeyvFile({
    filename: `${os.tmpdir()}/keyv-file/default-rnd-${Math.random().toString(36).slice(2)}.json`, // the file path to store the data
    expiredCheckDelay: 24 * 3600 * 1000, // ms, check and remove expired data in each ms
    writeDelay: 100, // ms, batch write to disk in a specific duration, enhance write performance.
    encode: JSON.stringify, // serialize function
    decode: JSON.parse // deserialize function
  })
})

Using directly

import KeyvFile, { makeField } from 'keyv-file'

class Kv extends KeyvFile {
  constructor() {
    super({
      filename: './db.json'
    })
  }
  someField = makeField(this, 'field_key')
}

export const kv = new Kv

kv.someField.get(1) // empty return default value 1
kv.someField.set(2) // set value 2
kv.someField.get() // return saved value 2
kv.someField.delete() // delete field

License

MIT