Message Broker - Messaging, and Eventing for your SOA. Jms - recommend an opensource message queue service. Broker vs. Brokerless. This article presents different models of how messaging can be done.
It discusses drawbacks and advantages of individual approaches. It is meant as a background reading to learn how ØMQ differs from traditional messaging systems. Architecture of most messaging systems is distinctive by the messaging server ("broker") in the middle. You can think of it as of classical "star" or "hub and spoke" architecture.
Every application is connected to the central broker. There are several advantages to this model. Firstly, applications don't have to have any idea about location of other applications. Secondly, message sender and message receiver lifetimes don't have to overlap. Thirdly, broker model is to some extent resistant to the application failure. Drawbacks of broker model are twofold: Firstly, it requires excessive amount of network communication. First, let's have a look how this scenario would look like when implemented using SOA (ESB, request/reply) architecture. (107) What is the best queueing or enterprise messaging system out there right now. Message Queue Evaluation Notes. From Second Life Wiki Second Life Wiki > Message Queue Evaluation Notes One of the infrastructure tools that we've identified for the future internal architecture of Second Life is messaging.
Message queuing systems allow systems that send messages to not have to worry about how they will be delivered, and allow consumers of messages to gather whichever ones interest them, at their own pace. Ideally we'd have a completely scaleable system that clients could treat as singular black box. It would act as a well-known cluster to which senders or receivers of messages could connect, and be able to communicate asynchronously to or from anywhere else on the grid.
Our use cases mostly involve very large numbers of queues; the smallest number we're even considering is double the number of concurrent users. We're unfortunately pretty far from having closed the case on which technology to choose, or even if we can use any of these at all. Criteria Questions Group Chat Use Case AMQ Protocol RabbitMQ. What is wrong with AMQP (and how to fix it) - High Performance Solutions. This is a redacted text by Pieter Hintjens that was distributed to some AMQP working group members in August 2008, and which covers the main issues with AMQP as seen by iMatix at that time.
This article is about AMQP, the Advanced Message Queuing Protocol. AMQP is an attempt by some very large businesses, and some smaller suppliers, to change the rules in the business messaging market. In some ways, they are succeeding. This is a market with two dominant suppliers, IBM and Tibco, and a serious lack of open standards and open-source competitors. It's bad for clients, but also for vendors. Let me explain very briefly how standards work. So standardization always works from the bottom up, from more basic and broadly-used technologies to more sophisticated and narrowly-used ones. The economic basis for making standards is the concept we call a natural monopoly. Similar natural monopolies would be rail transport, electricity, phones, the Internet Protocol.