Systèmes de messagerie Pub-Sub simples

Centrifugo is a self-hosted real-time messaging server that provides infrastructure for scalable notifications, a publish-subscribe message broker, and a language-agnostic WebSocket gateway. It allows for the delivery of instant messages and data streams to concurrent users via WebSockets and Server-Sent Events. The system functions as a communication layer that separates network transport from backend business logic. It supports distributed messaging clusters using Redis for coordination of presence and message delivery across multiple server nodes. The project covers channel subscription m

ntfy is a self-hosted messaging infrastructure that provides a lightweight platform for sending and receiving real-time notifications. It functions as a topic-based pub-sub server, allowing users to publish and subscribe to message channels using standard HTTP requests. By bridging server-side events with native mobile and desktop clients, it enables the delivery of alerts across various environments through a unified communication layer. The project distinguishes itself by offering a complete, private notification ecosystem that includes persistent message caching and robust access control.

Kafka is a distributed event streaming platform designed for capturing, storing, and processing real-time data streams across interconnected nodes. It functions as a distributed commit log, providing a fault-tolerant storage mechanism that records state changes sequentially to ensure data consistency and durability across distributed environments. The platform distinguishes itself through a partitioned commit log architecture that enables horizontal scaling and parallel processing of data streams. It integrates a stream processing engine for continuous transformations and aggregations, while

NATS Server is a high-performance, lightweight messaging system designed for cloud-native applications, edge computing, and distributed microservices. It functions as a distributed publish-subscribe broker that routes messages using hierarchical, dot-separated subject strings, enabling decoupled communication between services without requiring centralized broker lookups. The system supports core messaging patterns including asynchronous publish-subscribe, request-reply, and load-balanced queue processing. The platform distinguishes itself through a decentralized architecture that eliminates t

Mercure is an HTTP-based message broker and real-time pub/sub server that routes asynchronous data updates to authorized subscribers. It functions as a centralized hub that receives data via standard HTTP requests and broadcasts it to web clients using the Server-Sent Events protocol. The project distinguishes itself by replacing WebSockets with a unidirectional HTTP connection, leveraging HTTP/2 and HTTP/3 for multiplexed, low-latency delivery. It implements a secure access control layer using JSON Web Tokens and JSON Web Signatures to validate the identity of publishers and subscribers, and

Emitter is a distributed pub-sub platform and message brokering system that decouples senders and receivers through topic-based routing. It functions as an MQTT message broker and WebSocket communication server, enabling real-time data exchange between hardware devices and web-based clients. The system acts as a secure channel orchestrator and message persistence engine. It ensures delivery through a storage system that buffers historical messages and queues data for offline subscribers. Access to these data streams is managed via time-limited permission keys that enforce granular read and wr

NATS Streaming System Server