Configs2026年4月11日·1 分钟阅读

RabbitMQ — Reliable Open-Source Message Broker

RabbitMQ is one of the most popular open-source message brokers, implementing AMQP, MQTT, STOMP, and more. Used by thousands of companies for reliable async messaging, RPC, pub/sub, task queues, and microservice communication.

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快速使用

先拿来用，再决定要不要深挖

这里应该同时让用户和 Agent 知道第一步该复制什么、安装什么、落到哪里。

# Docker
docker run -d --name rabbitmq -p 5672:5672 -p 15672:15672 \
  -e RABBITMQ_DEFAULT_USER=admin -e RABBITMQ_DEFAULT_PASS=admin \
  rabbitmq:3-management

# UI at http://localhost:15672

Python producer (pika):

import pika

conn = pika.BlockingConnection(pika.ConnectionParameters("localhost"))
channel = conn.channel()
channel.queue_declare(queue="tasks", durable=True)

channel.basic_publish(
    exchange="",
    routing_key="tasks",
    body="process order 42",
    properties=pika.BasicProperties(delivery_mode=2),  # persistent
)
conn.close()

Python consumer:

def callback(ch, method, properties, body):
    print(f"Received {body}")
    ch.basic_ack(delivery_tag=method.delivery_tag)

channel.basic_qos(prefetch_count=1)
channel.basic_consume(queue="tasks", on_message_callback=callback)
channel.start_consuming()
介绍

RabbitMQ is one of the most popular and mature open-source message brokers. Originally built on Erlang/OTP (still its core), it implements the Advanced Message Queuing Protocol (AMQP) and supports MQTT, STOMP, HTTP, WebSocket. Used by thousands of companies for reliable async messaging, task queues, pub/sub, and microservice communication.

What RabbitMQ Does

  • AMQP 0.9.1 — primary protocol, plus AMQP 1.0
  • Exchanges — direct, fanout, topic, headers
  • Queues — classic, quorum (Raft-based), streams (append-only log)
  • Bindings — flexible routing rules
  • Persistence — durable exchanges/queues + persistent messages
  • Clustering — high availability across nodes
  • Mirrored/Quorum queues — HA with replication
  • Plugins — MQTT, STOMP, Federation, Shovel, Web STOMP
  • Management UI — http://host:15672
  • RabbitMQ Streams — append-only log (Kafka-like)

Architecture

Erlang processes are cheap and fault-tolerant. A RabbitMQ node runs thousands of Erlang processes per queue/connection. Cluster nodes share metadata via Mnesia DB (or Khepri in newer versions). Messages route through exchanges by binding rules.

Self-Hosting

# docker-compose.yml with clustering
version: "3"
services:
  rabbit1:
    image: rabbitmq:3-management
    hostname: rabbit1
    environment:
      RABBITMQ_ERLANG_COOKIE: "secretcookie"
  rabbit2:
    image: rabbitmq:3-management
    hostname: rabbit2
    depends_on: [rabbit1]
    environment:
      RABBITMQ_ERLANG_COOKIE: "secretcookie"

Key Features

  • AMQP, MQTT, STOMP protocols
  • Multiple exchange types
  • Quorum queues (Raft)
  • Streams (Kafka-like append log)
  • Federation across clusters
  • Shovel for cross-cluster forwarding
  • Management UI and HTTP API
  • Plugins ecosystem
  • TLS and SASL auth
  • Mature client libraries for every language

Comparison

Broker Protocol Model Best For
RabbitMQ AMQP + more Queues + exchanges Task queues, RPC, flexible routing
Kafka Kafka Distributed log Event streaming, analytics
NATS NATS Subject-based pub/sub Low-latency microservice comms
Redis Streams Redis Log + consumer groups Lightweight streams
ActiveMQ AMQP + JMS Queues + topics Legacy Java systems

常见问题 FAQ

Q: RabbitMQ vs Kafka？ A: RabbitMQ 是传统 MQ（灵活路由、任务队列、RPC、低延迟异步）；Kafka 是分布式日志（事件流、长期保留、高吞吐）。选择看是队列语义还是流语义。

Q: Classic vs Quorum queue？ A: Quorum 是 v3.8+ 基于 Raft 的新 HA queue 类型，推荐生产使用。Classic mirrored queue 在 v3.12 后 deprecated。

Q: 多大规模？ A: 单节点支持数万连接、每秒几万消息。集群能 scale 到更高。超高吞吐（百万/秒）建议 Kafka。

来源与致谢 Sources

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