Publish-Subscribe

Principles

Subscribers subscribe to messages containing events, sensor measurements, alerts, alarms, notifications, ...

Subscription could be done a topic or a topic pattern or on a message content.

Publishers publish messages on a topic or a set of topics

Features

• Content-based routing
• TCP or UDP or Multicast UDP or Broadcast (in LAN) or mix
• LAN or WAN
• Realtime or not
• QoS or not (order, reliability, high-availability ...)
• Centralised vs Distributed (P2P, ...)
• Atomicity (ACID transaction)
• Broker required or Direct

Protocols and API

• OSGi EventAdmin Service
• JMS
• AMQP
• CORBA Data Distribution Service
• UPnP GENA
• MQTT
• M3DA
• PubSubHubBub
• Real-Time Publish-Subscribe (RTPS)
• Siena
• Robot Operating System
• Ivy
• Apache Kafka
• WAMP
• Redis.io

PubSub-as-a-Service Providers

• PubNub
• Octoblu
• Axeda
• Xively
• Google Cloud Pub/Sub
• Superfeedr

Papers

• The Many Faces of Publish/Subscribe http://www.cs.ru.nl/~pieter/oss/manyfaces.pdf
• International Conference on Distributed Event-Based Systems (DEBS) http://www.debs.org/