OSB vs SOA- which one can take max load in terms of req/resp traffic

Hi,
I have few basic questions about load taking capacity of OSB and soa.
1. Is there any oracle doc stating how much traffic OSB or SOA components(bpel, mediator etc.) can take in terms of request/response per hour with certain infrastructure?
2. Diff in java callout in bpel and in osb?
3. Which one is more stable product in high load situation eg. 2 lac req/resp per hour.
4. Is there a link between number of javacallouts and performance in OSB and in SOA.
Regards,
SOA Enthusiast.

Hi Saurabh,
Interesting challenge... As I said before it's unlikely you will find stats as you want, this type of study is very particular to a use case, platform and infrastructure... There's no generic magical number...
I can say that OSB is lightweight and scalable and I would be surprised if it would become a bottleneck if running in a well dimensioned hardware... The bottleneck is typically at the external system... I also believe that if you add SOA Suite in the picture you will be adding overhead rather than enhancing performance, you should add SOA Suite if you need capabilities like audit, traceability, recovery and so on that you won't have with OSB alone... There's an old study on the link bellow but I'd doubt it would apply for your case, but may be helpful anyway...
http://biemond.blogspot.com.au/2009/06/osb-esb-performance-comparison.html
Dimensioning hardware is always a challenge... I recommend you to write a typical service and a worst scenario service and use a tool like jmeter to test how much throughput you can get from your infrastructure... Java callouts and complex xml transformation processing are points to be highlighted... Use a clustered OSB topology so you can easily add new nodes if needed...
Cheers,
Vlad

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