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Easy Learn Java: Programming Articles, Examples and Tips - Page 17


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Question: Why is thin client has name ''thin'' in J2EE?

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Question: Why is thin client has name "thin" in J2EE?

Answer: J2EE applications do not perform most of functions such
as executing complex logic, querying databases on a client side.
Instead, these operations are executed on J2EE server by
enterprise or Web beans. It has advantages in terms of security,
performance, reliability and services. Main function of a thin
client is to provide some interface to users, letting to interact
with J2EE application on a server side.
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Our older tips: March 22, 2001 - Oktober 21, 2002 read here.
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47 comments | Printer Friendly Page  Send to a Friend | Score: 5
Posted by jalex on Wednesday, February 05, 2003 (00:00:00) (4168 reads)

Question: How can I measure performance of my servlets/JSP pages?

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Question: How can I measure performance of my servlets/JSP pages?

Answer: JMeter from jakarta.apache.org is simple, free and efficient.
There are several more from http://www.servletsuite.com/servlets/stress.htm

Stress tool for your web applications: lets you to test your servlets/JSP pages. Supports session simulation, so you may test your real applications.

How does it work? Describe your host (set URI), define if you need sessions simulation (through cookies or URL rewriting), set parameters in case you are using post request and set hits intensity. Package simulates users activity based on the Puasson distribution. Intensity you set is an average amount hits per second (it may be non-integer, e.g. 0.5 means 30 hits per minute etc.). With the time step one second within the model time interval package calculates visitors count for this interval and generates a bundle of requests.


What you will get? Statistics for successful and failed requests and raw file with data for the each request: when it was (model time) and what was response time (real time or special mark for failed requests).
Package Stress distributed as a one jar file. Main class is StressTest. So - add jar file to your class path and run Stress.StressTest. Class requires one parameter - text file described your test configuration.
http://www.servletsuite.com/servlets/stress.htm


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Our older tips: March 22, 2001 - Oktober 21, 2002 read here.
All published and not published on site tips you can find here


942 bytes more | 9 comments | Printer Friendly Page  Send to a Friend | Score: 5
Posted by jalex on Tuesday, February 04, 2003 (00:00:00) (4333 reads)

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