An asynchronous data transport protocol for non-interactive data processing over the Internet.

摘要

Emerging e-commerce applications typically use a Web server and CGI (Common Gateway Interface) for data processing via the Internet. This client/server architecture is suitable when the Internet is not congested and the database server is not overloaded, but it may cause problems if congestion and overloading occur. A certain class of DPS (Data Processing System) applications, such as order processing or sales reporting, do not require an interactive real-time response, so they may utilize protocols that allow delaying or relaying of data.; In this thesis, we present a model for an Asynchronous Data Transport Network (ADTN) for data processing over the Internet. We propose an Asynchronous Data Transport Protocol (ADTP) for such applications that use cooperating agents to delay and relay data. We also describe an implementation of ADTP (we call it the SendData system) that avoids congestion on the Internet and exploits a database server around the clock.; Finally we present a prototype implementation of the SendData. We use the prototype to conduct a performance evaluation by generating simulated workloads. We describe the simulated environment, and show the performance results. We evaluate the ADTP protocol performance in terms of Transaction Success Ratio (TSR), Throughput (TP), Round Trip Time (RTT), Data Processing Time (DPT), and Average Queue Size (AQS) when compared to current interactive client/server protocols (CS and CSQ) for Internet database access. The performance results show that for non-real-time data processing, ADTP has a much better performance in most cases than traditional methods.