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Java Vs. C#: Which Performs Better In the 'Real World'?
Nerval's Lobster writes "Software developer Jeff Cogswell writes: 'Let's compare Java and C#, two programming languages with large numbers of ardent fans and equally virulent detractors. I'm not interested in yet another test that grindingly calculates a million digits' worth of Pi. I want to know about real-world performance: How does each language measure up when asked to dish out millions of Web pages a day? How do they compare when having to grab data from a database to construct those pages dynamically? The results were quite interesting.' Having worked as a professional C# programmer for many years, Cogswell found some long-held assumptions challenged."
This would be the browser plugin you're talking about? Websites are not served up by browser plugins. Stop spreading lies.
Before I get modded troll, I'd like to point out that there is a really awesome C++ toolkit for web development and it will blow your mind. It's called Wt and it makes your applications fully OOP and a joy to develop in. One really awesome feature is that it is Boosted and another awesome feature is smart with regard to data. It will use where apropriate (usually you use the AJAX version of a control or mark a function for export to javascript) AJAX rather than statically filling your page. The result are some really easy to code fast websites.
Slashdot's rate-of-post filter: Preventing you from posting too many great ideas at once.
Test 2: A function to generate a "full web site", (actually a simple web page with all the elements and trivial content). Java beats C# hands down.
Conclusion:
1. The testing guy has absolutely no idea of how to write low level function efficiently.
2. The testing guy's idea of a "full web site" is woe fully inadequate. He could have been the guy designing "full continental breakfast" in Roach Motel Inc.
sed -e 's/Chuck Norris/Rajnikant/g' joke > fact
I been a Java developer for 8 years, worked at several different consulting companies and large in-house corporate environments. I've never seen Windows+Tomcat being used in an actual production setup. For development, yes, almost always. But Linux+Tomcat is much more common for live servers in my experience. At least it is in today's business world.
You must not work in the education sector. PowerSchool is becoming quite popular in many districts (at least where I live) these days and Windows and Mac are all they support. They most commonly set up Tomcat + Oracle on Windows servers.
Yay PowerSchool. For over a year, they didn't even support sFTP. Most of their customers transferred student data over the Internet with no VPN using FTP. Should have seen all the SSN, name, and address data for both students and teachers that was transferred. Not to mention their data is messy.
Sorry to burst your bubble, but Pearson is a private company. It is not an academic institution. You can blame this on bureaucracy in large institutions making bad choices, but teachers don't get a say on this stuff. The leadership does.
You've never been in education, have you? It shows.
"Educators" are the actual teachers. They have near zero say in what systems get selected, and those doing the selecting seldom have any experience in being an educator, and usually the selection committee ("Committee Decisions: Because you can't fire the committee") is judging the software on features and functionality, not on underlying technology.
If there is someone in a specific educational organization who has specific architectural biases against Windows, I can assure you they have nothing to do with system selection, only implementation.
And what are the VIABLE alternatives? Professionally I've worked with several educational institutions that have made a run at being all Macintosh, and it has always been a dismal and expensive failure on the back end. They all migrated to Windows servers and kept Macs only for teachers and students, if that.
Linux may be viable for some functions, but with most of these things it boils down to dollars. Linux may be "free" but support isn't, and finding people who can support it is expensive for school districts, at least a datacenter level and not a kludged whitebox install level. Maintaining an all-Linux backend usually requires a lot of high level administrative support and the administrators I can guarantee you are looking at COST first THEN functionality and they will ALWAYS see a Microsoft-based solution as inherently cheaper "because we already do that."
We have the @Asynchronous annotation in Java 6 that pretty much does the same thing.
No it does not do "pretty much the same thing". Not even close.
To start with, the @Asynchronous annotation is for EJB session beans only.
C# async is a generalized async capability baked into the language. C# async works with disk IO, network IO, threads or anything else that follows one of several async patterns.
The big boon with async compared to task based parallelism (on which C# async is based) comes from the capability to write the code in a pseudo-sequential form and (not least) the ability to *compose* async tasks.
Think about how you handle exceptions in a flow of, say, 3 async calls. Without language support for async you have to register callbacks or futures which will execute once the previous task completes. How would you go about defining an exception handler that covers all 3 calls? You can't; not without some serious wrangling with closures and state machines.
Now think about how you would create a loop over async task #2. You cannot span a single while loop across the task call because the task will call back to a continuation function which syntactically needs to be *outside* the loop.
Now combine the loop with the exception handler. In Java this gets so unwieldy that it is next to impossible. In C# it is trivially easy and reads like sequential code:
try{
var res1 = await FirstAsync();
while(someCondition) {
await SecondAsync(res1);
}
var res3 = await ThirdAsync(res1)
} catch (SomeException ex) {
}
GP is correct, the async continuations is C# are pretty unique at this point.
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