@instant.dev/kv v0.0.20

Instant KV

Manage multiple Redis connections easily

Instant KV is a simple wrapper for Redis, specifically the node-redis client, that allows you to work with JSON by default, easily manage multiple connections and gracefully handle request timeouts.

It is intended to provide idiomatic kv management to Instant API projects.

Getting Started

Quickstart

If you are using the Instant CLI the fastest way to get started is built-in;

instant kit kv

This will;

• Install @instant.dev/kv
• Set up your local .env with MAIN_KV_CONNECTIONSTRING
• Configure ./_instant/kv.json automatically with {"development":{"main":{...}}} settings
• Extend Instant with an Instant.kv object via a plugin
• Automatically add tests to make sure everything works

Voila! Now you can use Instant KV in an Instant project;

// Using the InstantORM extension
const InstantORM = require('@instant.dev/orm');
const Instant = await Instant.connectToPool(); // connect to ORM, runs plugins
await Instant.kv.store().set('my_key', 'my_value'); // set by plugin

// Or...
const InstantKV = require('@instant.dev/kv');
const kv = new InstantKV();
await kv.connect(); // will default to using cfg from
                    // _instant.dev/kv.json["development"]["main"]
                    // where "development" is process.env.NODE_ENV
await kv.store().set('my_key', 'my_value');

Custom Installation

If you want to import Instant KV in a standalone project, use;

cd my_project_dir
npm i @instant.dev/kv --save

And then use with;

const InstantKV = require('@instant.dev/kv');
const kv = new InstantKV();
await kv.connect({connectionString: process.env.REDIS_URL}); // set this yourself
await kv.store().set('my_key', 'my_value');

API Reference

Connect to your main kv;

const InstantKV = require('@instant.dev/kv');
const kv = new InstantKV();
await kv.connect(cfg); // connectionString: or host:, port:, user: ...

Access your store;

const store = kv.store();
console.log(store === kv.store('main')); // true, can also alias

Connect to multiple stores simultaneously;

const otherStore = await kv.addStore('other_redis_instance', cfg);

Run queries;

const store = kv.store();
await store.set('key', {some: "value"}); // default to JSON
let json = await store.get('key');       // will default parse JSON

• JSON Methods (default store and retrieve as JSON)
  • await store.set(key, value); (null will clear)
  • await store.get(key, defaultValue);
• Raw String Methods (a bit faster, no JSON parse)
  • await store.setRaw(key, value)
  • await store.getRaw(key, value)
• Buffer methods (for arbitrary encodings, files)
  • await store.setBuffer(key, value)
  • await store.getBuffer(key, value)
• Clear keys
  • await store.clear(key) or store.clear([key1, key2, ...])
• Arbitrary commands (node-redis)
  • await store.command('hSet', 'key', 'field', 'value')
  • let client = store.command('duplicate') - for making a duplicate client for pub/sub
  • These will execute any arbitrary method of node-redis

Acknowledgements

Special thank you to Scott Gamble who helps run all of the front-of-house work for instant.dev 💜!