ioredis vs redis-py
Which should you use? A side-by-side look at what each one does, who it suits, what it costs, how hard it is to set up, and where each falls short.
Open source · MIT
A Node.js client for Redis, written in TypeScript, with Cluster, Sentinel, and Streams support.
Open source · MIT
The official Python client library for talking to Redis from Python code.
The short answer
Choose ioredis if you need…
- Node.js backend developers who already run Redis and want a full-featured client
- Teams maintaining existing projects that already depend on ioredis
- Apps that use Redis Cluster or Sentinel for high availability
- TypeScript projects that want built-in type declarations
Choose redis-py if you need…
- Python developers who need to read and write data in a Redis server
- Backend teams building caching or session storage on Redis
- Projects that want the official Redis-maintained Python client
- Developers using Redis Cluster or async Python code
Side-by-side
| ioredis | redis-py | |
|---|---|---|
| Type | Library | Library |
| Price | Free and open source | Free and open source |
| Licence | MIT | MIT |
| GitHub stars | 15.4k | 13.7k |
| Setup difficulty | Beginner | Beginner |
| How you get it | Install with a package manager | Install with a package manager |
| Main language | TypeScript | Python |
| Last code update | 4 days ago | 4 days ago |
What each one is
ioredis
ioredis is a Redis client library for Node.js. It lets your JavaScript or TypeScript code send commands to a Redis server and read the results, using either callbacks or promises. It also covers Redis Cluster, Sentinel, Pub/Sub, Lua scripting, and TLS connections.
redis-py
redis-py is a Python library that lets Python programs connect to a Redis server and run its commands, such as storing and reading key-value data. Redis is a fast in-memory data store, and this library is the official way to use it from Python. It also supports pipelines to batch commands, Pub/Sub for messages on channels, and cluster and async connections.
Best for
ioredis
- Node.js backend developers who already run Redis and want a full-featured client
- Teams maintaining existing projects that already depend on ioredis
- Apps that use Redis Cluster or Sentinel for high availability
- TypeScript projects that want built-in type declarations
redis-py
- Python developers who need to read and write data in a Redis server
- Backend teams building caching or session storage on Redis
- Projects that want the official Redis-maintained Python client
- Developers using Redis Cluster or async Python code
Strengths
ioredis
- Covers a wide range of Redis features, including Cluster, Sentinel, Streams, and TLS
- Ships with official TypeScript declarations and is written in TypeScript
- Supports both Node callbacks and native promises
redis-py
- Official client maintained under the redis organization on GitHub
- Covers the standard Redis commands with a documented API and a docs site
- Has an optional hiredis extra for faster response parsing
Not ideal for
ioredis
- New projects: the README says node-redis is the recommended client for new projects and that ioredis is in best-effort maintenance
- Projects that need Redis Stack features like search or JSON as a first-class API, since the README points to node-redis for those
- Non-Node.js environments, since this is a Node.js client
redis-py
- People who need a full object-mapping layer; the README points to redis-om-python for that
- Non-programmers, since it is a code library rather than an app
- Projects running very old Python versions, because recent releases drop support for older Python versions
Trade-offs
ioredis
- The README says ioredis is in best-effort maintenance and recommends node-redis for new projects
- Requires Node.js 20 or newer for the current v6 release, according to the version table
redis-py
- Responses come back as bytes by default, so you must set decode_responses=True for strings
- Version support depends on the Redis server version; the README shows a compatibility table to check
Getting started
ioredis
Install the library
npm install ioredisOptional: add Node.js type declarations in a TypeScript project
npm install --save-dev @types/noderedis-py
Install redis-py
pip install redisInstall with faster hiredis parser
pip install "redis[hiredis]"Frequently asked questions
What is the difference between ioredis and redis-py?
ioredis: A Node.js client for Redis, written in TypeScript, with Cluster, Sentinel, and Streams support. redis-py: The official Python client library for talking to Redis from Python code. ioredis suits node.js backend developers who already run redis and want a full-featured client, while redis-py suits python developers who need to read and write data in a redis server.
Are ioredis and redis-py free?
ioredis: Free and open source. redis-py: Free and open source.
Is ioredis or redis-py more popular?
ioredis has more GitHub stars (15.4k) than redis-py (13.7k). Popularity isn't the same as fit — check which one matches your use case above.
What are other alternatives to ioredis and redis-py?
Other options people compare them with include node-redis, Jedis.
Keep comparing
Built from our catalogue entries for both products: open-source details come from each project's README (AI-assisted, refreshed weekly) and GitHub data; AI-tool details are editorial. Spotted something wrong? Let us know from either product's page.