Messaging Middleware And Implementation

Middleware system, operating system and database system are the basic technology in computer science domains. Middleware system and its concept are used in a lot of application systems. Message oriented middleware which servers as a message system is the development focus of the middleware technology. It uses high-efficient and reliable transmission mechanism to send information from one application to another application or to a lot of applications in the form of message.This thesis implements a message oriented middleware which is based on topic union. In the thesis we introduces the overall frame of the system, and the data structure of the message and the meaning of some attribute, and logic structure of the message queue, also introduces buffer pool of the send-queue and some operation of the queue.In order to improve system's performance and reliability, we use the pool technology to maintain the socket connection and use the software technology to implement the master and slave server. Based on the tree-like topological structure and relation between servers, we propose and implement the publish/subscribe system which is based on topic union.