explain to me about the Servlet?
I would like to better understand the servlet.
Can you clarify your the scope of your question?
If you want to know what a Servlet is then see Java servlet - Wikipedia, the free encyclopedia
If you want to know how APM processes services and the metrics that are captured, then perform a search such as Search Results - CA Application Performance Management - 10.2 - CA Technologies Documentation
I have not heard back any further, marking an answered. If there are follow-up questions, please be specific as to your query
The tip above is useful, thank you!