Reliable ESB and Distributed Transactional Memory for SOA

Service oriented architecture (SOA) is a paradigm for the realization and maintenance of business processes that span large distributed systems. Organizations often face difficulties when building the IT system based on SOA. the most common problem is poor reliability including service qualities and performance issues. in this article, we propose solutions to the problems described and merge them into a comprehensive architectural model for the reliable services provision in SOA. in order to overcome problems related to poor reliability, our architectural model requires the use of adjusted ESB (Enterprise Service Bus). Furthermore, we propose that all data transfer between web services and backend goes in form of TO (Transactional Objects), which are accessed by transactions in distributed transactional memory and allow us a uniform data access and manipulation, regardless of the data source. as the best approach to improve performances of the data access, our model introduces caching in the system binding with TOs. the proposed model is also loosely coupled, which means that the organizations can use only parts of the whole solution that correspond to their specific needs.