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The keyv npm package is a simple key-value storage with support for multiple backends. It is designed to be a straightforward solution for key-value storage across different systems and protocols. It supports TTL based expiry, making it suitable for applications like caching and session storage.
Simple Key-Value Storage
Store and retrieve data using simple key-value pairs.
{"const Keyv = require('keyv');
const keyv = new Keyv();
keyv.set('foo', 'bar').then(() => keyv.get('foo').then(value => console.log(value)));
// Logs: 'bar'"}
Namespaces
Use namespaces to avoid key collisions when sharing the same storage backend.
{"const Keyv = require('keyv');
const users = new Keyv('sqlite://path/to/database.sqlite', { namespace: 'users' });
const cache = new Keyv('sqlite://path/to/database.sqlite', { namespace: 'cache' });
// `users` and `cache` can share the same storage without key collisions."}
Support for Multiple Backends
Keyv can be used with various storage backends like Redis, MongoDB, SQLite, and more.
{"const Keyv = require('keyv');
const keyv = new Keyv('redis://user:pass@localhost:6379');
keyv.set('foo', 'bar').then(() => keyv.get('foo').then(value => console.log(value)));
// This will use Redis as the storage backend."}
TTL (Time to Live)
Automatically expire keys after a certain period of time.
{"const Keyv = require('keyv');
const keyv = new Keyv({ ttl: 10000 });
keyv.set('foo', 'expires in 10 seconds', 10000).then(() => setTimeout(() => keyv.get('foo').then(value => console.log(value)), 15000));
// Logs: undefined, since the key has expired after 10 seconds."}
node-cache is an in-memory key-value store similar to keyv but does not support multiple backends. It is purely for in-memory storage with TTL support.
levelup is a wrapper for LevelDB. It provides a key-value store with a rich set of features. Unlike keyv, levelup is more complex and is designed specifically for LevelDB.
ioredis is a robust, performance-focused Redis client for Node.js. While keyv supports Redis as one of its backends, ioredis is dedicated solely to Redis and offers more advanced features specific to Redis.
memcached is a Node.js client for the memcached server. It is similar to keyv in providing a key-value cache but is specific to the memcached protocol and server.
FAQs
Simple key-value storage with support for multiple backends
The npm package keyv receives a total of 27,383,914 weekly downloads. As such, keyv popularity was classified as popular.
We found that keyv demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 0 open source maintainers collaborating on the project.
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