Performance of SOA Integrated Systems

Yesterday, when I was to talking about how to improve performance of SOA integrated applications, we went into various areas of SOA performance.

we all know that SOA reduces the complexity of applications which are set of service

providers and Service consumers at large, independent of technologies being used. How do we

measure performance of these SOA appplications. They are all in a decoupled systems. all

systems individually performing great but when they require services from other apps,

performance is the question? Which part of the SOA governance can handle this? how to handle

SLAs for these apps?

what are the factors for performance to be considered for SOA set of systems?

Service Avialbility, Service message size, thruput and latency of the app, hardware sizing and many more?

for improved performance?

How can we sure that services are avialble 99.99% if not 100%?

How to improve performance

Good Design and Modeling practces

Use of tools to measure and improve on trail basis

Effective use of Hardware

Effective use of technologies like Event stream processing and Binary XML

Can we simulate the soa environemnt for testing?