# Deno and Redis

**Authors:** Ajeet Raina | **Category:** For developers | **Published:** 2026-02-25 | **Updated:** 2026-02-26

> **TL;DR:**
>
> Install the [Deno Redis client](https://deno.land/x/redis), import the `connect` function, and pass your Redis host, port, and password. You can then call standard Redis commands like `SET` and `GET` directly from TypeScript — no extra build step required.

[With over 100,000 stars and 1000+ contributors](https://github.com/denoland/deno), Deno is a popular modern runtime for JavaScript and TypeScript. It is built on [V8](https://v8.dev/), an open-source JavaScript engine developed by the Chromium Project for Google Chrome and Chromium web browsers.

## What you'll learn

- How to install and configure Deno
- How to connect Deno to a Redis database
- How to run Redis commands (SET, GET) from TypeScript
- How Deno KV compares to Redis for caching and data storage

## What is Deno and why use it with Redis?

Deno is a secure-by-default runtime that supports TypeScript natively, ships as a single executable, and has no external dependencies. When paired with Redis, Deno lets you build fast, real-time TypeScript applications with minimal setup.

**Key features of Deno:**

- **Secure by default** — executes code in a sandbox environment, disallowing runtime access to the underlying filesystem, environment variables, and scripts.
- **First-class TypeScript** — supports both JavaScript and TypeScript out of the box.
- **Single executable** — ships with no dependencies.
- **Built-in tooling** — includes a dependency inspector (`deno info`) and a code formatter (`deno fmt`).

## Prerequisites

- **Deno 1.19+** installed on your machine (see installation below)
- A Redis database — either a [free Redis Cloud account](https://redis.io/try-free/) or a local Redis instance

## How do I install the Deno Redis client?

[deno.land/x](https://deno.land/x) is a hosting service for Deno scripts. It caches releases of open source modules stored on GitHub and serves them at one easy-to-remember domain. The basic format of code URLs is:

```bash
https://deno.land/x/IDENTIFIER@VERSION/FILE_PATH
```

For example:

```bash
https://deno.land/x/redis@v0.25.3/mod.ts
```

You import the Redis client directly in your TypeScript file — no separate install step is needed.

## How do I connect Deno to Redis?

### Step 1. Set up a free Redis Cloud account

Visit [redis.io/try-free](https://redis.io/try-free/) and create [a free Redis Cloud account](https://redis.io/try-free/). Once you complete this tutorial, you will be provided with the database endpoint URL and password. Save it for future reference.

> **TIP**
>
> For a limited time, use **TIGER200** to get **$200** credits on Redis Cloud and try all the advanced capabilities!
>
> 🎉 [Click here to sign up](https://redis.io/try-free/)

![Redis Cloud dashboard showing the database endpoint URL, port, and password fields](https://cdn.sanity.io/images/sy1jschh/production/016aba4c703eaa656d24aee5bcc62bddbffaad47-1346x881.jpg)

### Step 2. Install Deno

```bash
brew install deno
```

Verify the installation:

```bash
deno -V
deno 1.19.0
```

### Step 3. Create a Redis script

Create a file called `redis.ts` with the following content:

```typescript
import { connect } from 'https://deno.land/x/redis/mod.ts';
const redis = await connect({
    hostname: 'redis-18386.c110-qa.us-east-1-1.ec2.qa-cloud.redislabs.com',
    port: 18386,
    password: 'XXXX',
});
const ok = await redis.set('foo', 'bar');
const foo = await redis.get('foo');
```

Replace the values of `hostname` and `port` to match those of your Redis database, and set `password` to your database password.

### Step 4. Run the script

Deno can grab scripts from multiple sources. For example, you can provide a filename, a URL, or `-` to read the file from stdin. You can run a JavaScript or TypeScript program by executing `deno run`.

```bash
deno run --allow-net redis.ts
```

When you run the script, the value of `foo` should be output. You can verify this by running the monitor command:

```bash
redis-15692.c264.ap-south-1-1.ec2.cloud.redislabs.com:15692> monitor
OK
1646536310.435577 [0 122.171.165.94:50193] "AUTH" "(redacted)"
1646536310.475578 [0 122.171.165.94:50193] "SET" "foo" "bar"
1646536310.511578 [0 122.171.165.94:50193] "GET" "foo"
```

## Deno KV vs Redis: which should I use?

Deno ships with [Deno KV](https://deno.com/kv), a built-in key-value store. While Deno KV is convenient for small projects and prototyping, Redis offers significant advantages for production workloads:

|                       | **Deno KV**                    | **Redis**                                                                |
| --------------------- | ------------------------------ | ------------------------------------------------------------------------ |
| **Data structures**   | Key-value only                 | Strings, hashes, lists, sets, sorted sets, streams, and more             |
| **Performance**       | Good for single-node use       | Sub-millisecond latency, optimized for high throughput                   |
| **Scalability**       | Limited to single Deno process | Horizontal scaling with Redis Cluster                                    |
| **Ecosystem**         | Deno-only                      | Language-agnostic — works with any runtime or language                   |
| **Persistence**       | SQLite-backed                  | RDB snapshots, AOF, or Redis Cloud managed persistence                   |
| **Advanced features** | Basic CRUD                     | Pub/Sub, Lua scripting, transactions, TTL, probabilistic data structures |

Use Deno KV when you need a quick, zero-config store for small applications. Choose Redis when you need advanced data structures, cross-language access, high availability, or horizontal scaling.

## Next steps

- Explore the full [Deno Redis client API](https://deno.land/x/redis)
- Try [Redis data structures](/data-structures/) beyond strings — hashes, lists, sets, and sorted sets
- Deploy your Deno + Redis app to [Deno Deploy](https://deno.com/deploy)
- Set up [Redis Cloud](https://redis.io/try-free/) for managed persistence and scaling

## Additional references

- [Getting Started with Deno Command Line Interface](https://deno.land/manual@v1.19.0/getting_started/command_line_interface)
- [Deno Releases Page](https://github.com/denoland/deno/releases)
- [Deno GitHub Repository](https://github.com/denoland/deno)
- [Deno Runtimes](https://deno.land/manual@v1.19.0/runtime)