Servers
https://www.youtube.com/watch?v=Nu-18s6EeM8
https://www.youtube.com/watch?v=ATObcDPLa40
https://www.javatpoint.com/server-web-vs-application
https://www.youtube.com/watch?v=ATObcDPLa40
https://www.javatpoint.com/server-web-vs-application
What is Tomcat?
Apache Tomcat is an open-source web server and servlet container for rendering Java Server Pages (JSPs) and executing servlets. Web applications can be deployed to a Tomcat server using WAR files (Java web archive files). Tomcat does not support the full EE stack and will not deploy EAR files.
If you don’t have a place to run your Tomcat yet, you can check out JavaPipe’s Java web hosting offers and see if that’s what you’re looking for. For now let’s proceed on how to setup your own Tomcat container.
https://stackoverflow.com/questions/29397202/does-glassfish-server-consist-of-a-webserver-also
https://stackoverflow.com/questions/29397202/does-glassfish-server-consist-of-a-webserver-also
1
According to the defintions I have read a
web server
is something which can serve http requests (e.g Apache).
A
web container
is something which can serve servlets and JSPs etc. Since Tomcat can both serve http requests and also serve servlets and JSPs it is considered as both a web server and a web container.
Application servers like Jboss, Glassfish are fully fledged java EE servers which also include other containers apart from the web container.
Now in order for an application server like Glassfish to work on its own, it also needs a web server(an http server) built into it. Therefore it should contain a webserver to work on its won, and if it doesn't contain a webserver built into it, there should be a way to plug existing web servers like apache to this application server.
What is the actual implementation? does it include a webserver or we should plug webservers into these java EE application servers?
1 Answer
1
Yes, it includes a full web tier. The Java Servlet spec covers much of this.
Most of the times these terms Web Server and Application server are used interchangeably.
Following are some of the key differences in features of Web Server and Application Server:
- Web Server is designed to serve HTTP Content. App Server can also serve HTTP Content but is not limited to just HTTP. It can be provided other protocol support such as RMI/RPC
- Web Server is mostly designed to serve static content, though most Web Servers have plugins to support scripting languages like Perl, PHP, ASP, JSP etc. through which these servers can generate dynamic HTTP content.
- Most of the application servers have Web Server as integral part of them, that means App Server can do whatever Web Server is capable of. Additionally App Server have components and features to support Application level services such as Connection Pooling, Object Pooling, Transaction Support, Messaging services etc.
- As web servers are well suited for static content and app servers for dynamic content, most of the production environments have web server acting as reverse proxy to app server. That means while servicing a page request, static contents (such as images/Static HTML) are served by web server that interprets the request. Using some kind of filtering technique (mostly extension of requested resource) web server identifies dynamic content request and transparently forwards to app server
Example of such configuration is Apache Tomcat HTTP Server and Oracle (formerly BEA) WebLogic Server. Apache Tomcat HTTP Server is Web Server and Oracle WebLogic is Application Server.
In some cases the servers are tightly integrated such as IIS and .NET Runtime. IIS is web server. When equipped with .NET runtime environment, IIS is capable of providing application services.
https://synap.ac/learning/top-10-surprising-memory-facts/
ReplyDeleteAlbert Anst...
ReplyDeletehttps://www.google.com/amp/s/blog.bookstellyouwhy.com/10-surprising-facts-about-albert-einstein%3fhs_amp=true