Apache
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Tomcat is an open-source implementation of Java servlet and JSP technologies. It has a modular architecture with components like Catalina, Coyote, and Jasper that allow it to function as a web server and servlet container. Tomcat has advantages like being free, cross-platform, and highly reliable/performant, though it can consume high resources and system changes require stopping all applications.
Apache
- 3. Introduction History Components Types of Tomcat services How it works? Advantages Disadvantages Conclusion
- 4. The apache tomcat is an open source implementation of the java servlet , java server pages, java expression language.
- 5. *Tomcat started off as a servlet reference implementation by James Duncan Davidson, a software architect at sun microsystem. He played a key role in it’s donation by sun microsystem to the apache software foundation.
- 6. Tomcat components are 1.Catalina 2.Coyote 3.Jasper 4.Cluster 5.High availability 6.Web application
- 7. *Catalina is tomcat servlet container.catalina implements sun microsystems .In tomcat, a realm element represents a “ database ” of user names ,passwords , and roles assigned to those users.
- 8. *Coyote is a connector component for tomcat. That supports the HTTP 1.1 protocol as a web server. This allows catalina ,nominaly a java servlet or JSP container, to also acts as a plain web server that serves local files as HTTP documents.
- 9. *Jasper is tomcat JSP engine. Jasper parses jsp files to compile them into java code as servlets(that can be handled by catalina).at run time, jasper detects changes to jsp files and recompiles them.
- 10. *This component has been added to manage large applications.It is used for load balancing that can be achieved though many techniques.Clustering supports currently requires the JDK version 1.5 or later.
- 11. *A High availabiility feature has been added to facilitate the scheduling of system upgrades( e.g. new releases, change requests)without effecting the live environment.
- 12. *It has also added to support for deployment across the variety of environment. It also tries to manage sessions as well as applications across the network.
- 13. 1.Tomcat shared service 2.Tomcat development service
- 14. *This is the kind of service exemplified in this web page.it means that there system service running on CSSgate /repos that allows you to install your web applications on it—it is represented by port 8080.
- 15. *Basically, you are running your own tomcat service with a unique port number .Anything that you do incorrectly doesnot affect anyone else, and viceversa.
- 16. Tomcat mainly has a Classloader Hierarchy and a Thread Pool. When a web application is deployed into tomcat, tomcat scans the Webapp , reads its deployment descriptor.
- 17. *A very long history of reliability and performance. *It is free and commercial friendly-no licensing fees or costs. *It will run on any OS. *It is actively maintain. The last release is 2.4.10-released at the end of july .
- 18. *System changes on tomcat system level require both application to stop. *port or network settings have to differ both applications cannot use same ports. *High resource consumption of one application can slow down the other application, as there is only one resource pool to use.
- 19. It is easy to work with web applications.
- 20. U