Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
Please briefly explain why you feel this question should be reported.
Please briefly explain why you feel this answer should be reported.
Please briefly explain why you feel this user should be reported.
As I know many Java EE application servers are written in Java. (JBoss, Tomcat…)
Is Websphere also written in Java?
I found that Websphere’s performance is dramatic high, I guess that Websphere is written in C++. I couldn’t imagine that the ‘heavy’ server is able to run so fast in JVM.
Is it true?
Yes, WebSphere is written in Java. Typically application servers used to have components orineted towards high performance (like the HTTP listeners) written in C/C++, and compiled against the various supported platforms. Nowadays, fewer application servers employ this approach and are almost always written entirely in Java (I’m not sure whether this is truly the case with WebSphere, but most of it is surely written in Java).
As for the performance of relatively better performance of WebSphere, most of it can be attributed to the performance of the IBM J9 JVM, which in contrast to the JVMs derived from Sun, is more oriented towards the server-side applications (atleast thats what some people claim, although I havent noticed a huge amount of difference).