Response Time

[Nancy Dawson]

There is this requirement that response time should not be more than 15 seconds, what class can you use to ensure that a transaction that is taking too long gets cut off

[Santiago Urrizola]

You must think in other type of desitions, like, wich transaction mechanism, wich type of ejb, persistence, client server communication ... etc. In terms of performance.

[Cleuton Sampaio]

Hi Nancy,

Santiago is right.

You have timeout mechanism to deal with that (Connection Timeout, Http Timeout). But this is not the main cause of bad response time. Garbage collection, bad load distribution, bad separation of layers, inappropriate use of entity beans (collection of Entities) etc.

I have read Mark Cade�s book and I followed his advices, so I am not using entity beans at all... Only DAOs. But I have seen people that used Entity beans and passed and vice-versa. I think you must tell them whether your solution is scallable and why. You will have to justify it in the Essay exam (part III).