8/3/2023 0 Comments Oracle coherence web![]() This data is particularly useful for long-running business process, and is typically stored in a database to provide insulation against machine failures. where is current process instance at this point in time, which processes are active vs. ![]() Service state - This data pertains to the current state of the business process/service, i.e.Data within a SOA generally falls into one of two categories: The performance of any SOA application is directly proportional to the amount of time it takes to retrieve the underlying data. We will also illustrate the approach a major pharmaceutical company took to improve the performance of a composite application using an Oracle Coherence Grid solution with Oracle SOA Suite. In this article we will discuss how a mid-tier caching strategy can inject high performance into data services as part of a SOA. But what is the best way to build a scalable data access store in the data tier? What is the best way to enable user applications, and in turn business processes, to quickly access data traditionally stored in databases? On top of that, if IT is mandated to meet strict SLA agreements, it becomes extremely important to build SOA applications that perform on all RASP levels. Although data services are designed for centralizing data access, scalability issues arise when many business processes depend on same set of data services. That translates to as many as 525 hours of unplanned downtime each year. If a business process depends on six data services, each of which achieves 99% uptime, the business process itself could have up to 6% downtime. The more services in a business process, the more vulnerable it is. This abstraction places a performance tax on SOA applications. Because SOA makes use of the verbose XML (extensible mark-up language) format and data is converted (marshaled and un-marshaled) when web services are called, overhead is generated. In online retailing, studies have even shown that shoppers drop off when response times exceed only one second. Users typically consider any results beyond five seconds as simply unusable. The results of a SOA composite application are surfaced in a user interface and therefore bound by an acceptable response time. Performance/scalability issues have grown to be the one of the topmost concerns when building a SOA application. The downside to this positive development is performance. Business users, now familiar with using consumer Internet applications and mash-ups from Google, Yahoo, and other companies now demand similar capabilities from their enterprise systems. ![]() At the same time, SOA also raises the bar for IT because business users have higher expectations. ![]() This leads to significant benefits, notably improved agility and enhanced productivity thanks to better interoperability across existing monolithic applications. Hence, SOA provides ways to access information as well as combine information more easily. BPEL and other orchestration standards make it easy to string together such services via composite process flows. Web service standards make it possible to reuse existing business logic much more easily, independent of the specific technology in the the business logic is implemented. Service-Oriented Architecture (SOA) is changing the application development and integration game. Part of the Oracle Fusion Middleware Patterns article series. Injecting high performance into data services
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