• Once web server is started one daemon process will be started to listen to clients continuously and to trap and take the client generated Http request.
• The process that runs continuously is called as daemon process.
• Every java application contains two default threads.
1. Main threads
2. Garbage collector threads (daemon thread).
• JSP container is the enhancement of servlet container and both containers use JRE/JVM supplied by web server.
• Middle ware services are configurable additional services on the application to make applications executing perfectly in all the situations.
• Security middle ware service protects the application from unauthorized and unauthenticated users.
• Transaction Management service executes the logics by applying do everything or nothing principle.
• JDBC connection pool supplies set of ready available JDBC Connection objects.
• Logging service keeps track of the application execution process through conformation statements / messages / log messages.
• Middle ware services are not minimum logics of application development. they are additional or optional services to apply on applications.
• A web application can be there with or without middle ware services.
• Web server automatically activates servlet container and JSP container to execute servlet, JSP programs when they are requested by clients.
• The client side web resource programs of web application goes to browser window for execution whereas the server side programs will be executed by using the containers of web server.
• In web application executing environment browser software is called as client software and web server software is called as server software.
Dinesh Thakur holds an B.C.A, MCDBA, MCSD certifications. Dinesh authors the hugely popular