Subject: Re: FYI: performance comparison with velocity
Newsgroups: gmane.comp.web.freemarker.user
Date: 2007-05-10 17:48:45 GMT (1 year, 29 weeks, 4 days, 7 hours and 27 minutes ago)
On 5/10/07, Daniel Dekany <ddekany <at> freemail.hu> wrote:
What FreeMarker or any other MVC template does
is just too little compared to all the other thing that has to be done
to serve a HTTP request (possibly with the exception of some really
extreme applications). Note that these "other things" include the
business logic methods called from the template, which often confuse
users. Like, they call a method that is quite resource intensive, and
then say that the template has executed this and that slow. They only
forget the most of that time was spent outside FreeMarker.
I would strongly agree with this assertion. When Jive Software switched our applications from jsp to freemarker we did do a quick performance analysis of the change, and while freemarker didn't increase performance outright, it also didn't really negatively impact the performance either. Most of the time taken to service a request was not taken up by freemarker but rather by the core API and action framework. Freemarker was definitely a *huge* improvement for us as it improved things in a lot of other aspects:
* It's performance is consistent across application servers and is more then fast enough for our requirements. The same cannot be said for JSP.
* The template parsing time is fast - especially when compared to compiling JSP's in some application servers. This has a huge benefit for us in the initial customer review process as previously potential customers would note that the application felt very slow - almost entirely because of the delay in compiling each JSP page (precompilation wasn't possible for us in most circumstances)
* Freemarker's errors messages are excellent - it's obvious what went wrong. With JSP and some other template solutions it can often be very difficult to isolate an issue down to the original template source code.
* If there's an issue we only have to fix it in one place. With JSP we kept having to workaround many issues with application server bugs.
* It's powerful enough for our needs - velocity didn't have the features we required.
I hope this helps bring a bit more real world perspective to this discussion
Regards,
Bruce Ritchie
Jive Software
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