Research On Service Management And Monitor In Distributed Transaction Processing Monitor

Transactions define atomic operation sequences with ACID (Atomicity, Consistency, Isolation, and Durability) properties and are the key to reliable distributed applications. The distributed transaction processing monitors have become fundamental platforms for exploring, deploying, running and monitor three-tier applications for large-scale transaction processing and provide the functions including transaction management and coordination, processing management, communication management, load balance and failure recovery.This thesis focuses on the research about service management and monitor in distributed transaction processing monitor.Services are the interfaces to access distributed transaction monitor. Service management and monitor play an important role in the distributed transaction monitor. This thesis introduces the design and implementation of the service management and monitor, on the basis of experiences of the distributed transaction monitor OnceTX1.0 and OnceTX2.0. Both OnceTX1.0 and OnceTX2.0 keep to X/Open Distributed Transaction Processing reference model. OnceTX1.0 is suitable for small-scale applications; however, OnceTX2.0 enforces the role of domains and adopts a configurable and dynamic load-balance algorithm with the aim to build distributed enterprise applications of large-scale and high capacity. OnceTX2.0 is an advanced version and improves the service management and monitor based on OnceTX1.0. The experimental data show the evident enhancements on performance and availability. Also, the thesis compares the service management and monitor of OnceTX1.0 and OnceTX2.0 from five aspects: topology, same name service, load balancing, security and authentication, management.