If the C++ CGI is invoked for each request, then Java servlets will
greatly outperform C++.
More likely limit will be MySQL. If he's to be running on a single
disk (a small server) then MySQL will likely become disk-bound *long*
before Java servlets could become processor-bound.
A good incremental development path:
1. Write the application using Java servlets.
(shortest development time).
2. Need more performance?
Add memory (at $2 per megabyte, an hour of developer's time saved
can pay for a lot of memory :).
Probably 256 megabytes is a minimum for a high performance site,
with more needed if the load is really large.
3. Need more performance, you've checked and there is enough memory?
You should be disk-bound at this point, so add a RAID disk subsystem,
with a minimum of 4 disks, or more if the load is large.
4. Need more performance, and you're getting processor-bound?
Add dual or quad processors...
5. Need still more performance?
At this point you have a working application in production,
and you might consider translating the Java code into C++
for an in-process library loaded into your web server.
Frankly I rather doubt you're going to need to go past (3) for
a web mail application, unless the site gets *really* huge.
-----Original Message-----
From: Nabil Abbas
When you want real speed, forget about interpreted languages.
Personally, I would go for C++.
Emanuel Dejanu wrote:
> I must develop a new web mail application. The problem is that the
> application must be as fast as possible.
> I will use MySQL server to keep user messages and users profiles.
>
> My question is: what is the best language to develop such application? <!--
> in the idea of speed, not easy development -->
> To keep the list as little as possible please tell me between this:
> 1. Java Servlets
> 2. C++ CGI (with MySQL++ classes)
> 3. PHP
> 4. Perl CGI
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