Description

Key value store library that uses a few database options. It might be the case that you don't want to spend money in a new instance or in another service.

Adapters available:

• Local
• MySQL
• Redis
• Postgres (roadmap)
• MongoDB (roadmap)

Installation

npm install --save @lucasvmiguel/kv-store

How to use

MySQL

import * as kvStore from '@lucasvmiguel/kv-store';

const connection = mysql.createConnection({
    host: '...',
    user: '...',
    password: '...',
    port: '...',
    database: '...',
});

await kvStore.init({
  type: 'mysql',
  client: connection,
  tableName: 'kvstore_keyvalues', // OPTIONAL
  debug: false, // OPTIONAL
});

await kvStore.put('USER:123', 'abc');
const abc = await kvStore.get('USER:123');

// Expiration in seconds
await kvStore.putJson('USER:456', {foo: "bar"}, { expiration: 60 });
const fooBar = await kvStore.getJson('USER:456');

Redis

import * as kvStore from '@lucasvmiguel/kv-store';

const connection = redis.createClient(6379, '127.0.0.1')

await kvStore.init({
  type: 'redis',
  client: connection,
  tableName: 'kvstore_keyvalues', // OPTIONAL
  debug: false, // OPTIONAL
});

await kvStore.put('USER:123', 'abc');
const abc = await kvStore.get('USER:123');

// Expiration in seconds
await kvStore.putJson('USER:456', {foo: "bar"}, { expiration: 60 });
const fooBar = await kvStore.getJson('USER:456');

Local

import * as kvStore from '@lucasvmiguel/kv-store';

await kvStore.init({
  type: 'local',
  client: null,
  tableName: 'kvstore_keyvalues', // OPTIONAL
  debug: false, // OPTIONAL
});

await kvStore.put('USER:123', 'abc');
const abc = await kvStore.get('USER:123');

// Expiration in seconds
await kvStore.putJson('USER:456', {foo: "bar"}, { expiration: 60 });
const fooBar = await kvStore.getJson('USER:456');

API Reference

• expiration is in seconds
• just pass null to init if is local cache

function init: ({
    type: 'mysql' OR 'redis' OR 'local',
    client: mysql.Connection OR redis.RedisClient OR null,
    tableName?: string;
    debug?: boolean;
}) => Promise<boolean>

function refresh(connection: mysql.Connection OR redis.RedisClient OR null) => Promise<boolean>

function get(key: string) => Promise<string OR null>;

function put(key: string, value: string, options?: {expiration?: number}) => Promise<boolean>

function del(key: string) => Promise<boolean OR null>

License

MIT