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Dart client for Valkey (and Redis-compatible servers)

pub.dev/packages/dart_valkey

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MIT license
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dart valkey/redis

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This project is a robust, type-safe Dart client for Redis (and Valkey) that manages both command and Pub/Sub interactions. It provides built‐in connection management, automatic reconnection, and pluggable authentication. Thanks to its modular design, the user can easily extend commands as Dart extensions and choose between a secure (TLS) and insecure connection.

Features

  • Connection Management
    Uses the Template Method pattern in BaseConnection to handle the socket connection, reconnection logic, and error management automatically.

  • Authentication and Command Execution
    Implements authentication commands (e.g. HelloCommand and AuthCommand) to ensure secure and correct data exchange with the Redis/Valkey server.

  • Pub/Sub Support
    Supports Pub/Sub operations with the ValkeySubscriptionClient which handles subscriptions to channels and patterns and delivers messages via a unified stream.

  • Extensible & Modular
    Commands are organized into modules so that new commands can be added as extensions. The core libraries (ValkeyCommandClient and ValkeyClient) provide a foundation for building more specialized client implementations.

Installation

  1. Add the dependency in your pubspec.yaml:

    // filepath: pubspec.yaml
dependencies:
  dart_valkey: any

  2. Install the dependency by running:

    pub get

Usage

Connecting and Sending Commands

To connect and execute commands, first import the client library:

import 'package:dart_valkey/dart_valkey.dart';

Future<void> main() async {
  // Create a command client (or use a specific implementation)
  final client = ValkeyCommandClient(
    host: 'localhost',
    port: 6379,
    username: 'your-username',  // optional
    password: 'your-password',  // optional
  );
  
  // Connect to the server
  await client.connect();

  // Execute a command (for example, a PING command if implemented)
  final response = await client.execute(PingCommand());
  print('Server response: $response');

  // Close the client when done
  await client.close();
}

Pub/Sub Example

Subscribing to channels and listening for messages is simple with the ValkeySubscriptionClient:

import 'package:dart_valkey/dart_valkey.dart';
import 'dart:async';

Future<void> main() async {
  final subClient = ValkeySubscriptionClient(
    host: 'localhost',
    port: 6379,
  );

  // Connect to the server
  await subClient.connect();

  // Subscribe to a channel
  subClient.subscribe(['channel1']);

  // Listen to Pub/Sub messages
  final subscription = subClient.messages.listen((PubSubMessage msg) {
    print('Received message: ${msg.message} on channel: ${msg.channel}');
  });

  // Run for a while and cancel subscription when done.
  await Future.delayed(const Duration(seconds: 30));
  await subClient.close();
  await subscription.cancel();
}

Commands Implementation Status

The implementation status of the Valkey commands is shown below, as indicated in the official documentation. Commands marked with [x] are implemented, while those marked with [ ] are not yet implemented.

Bitmap Operations

Bloom filter Operations

Cluster

Connection

Generic

Geospatial indices

Hash Operations

HyperLogLog

JSON Operations

List Operations

Pub/Sub

Scripting and Functions

Search

Server

Set Operations

Sorted Set Operations

Stream Operations

String Operations

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Contributing

Contributions are welcome!
Feel free to open issues or submit pull requests on our repository.

About

Dart client for Valkey (and Redis-compatible servers)

pub.dev/packages/dart_valkey

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License

MIT license

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Code of conduct

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v0.0.3 Latest
Oct 20, 2025
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