Christopher Schultz wrote:
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André,
On 3/3/2009 10:57 AM, André Warnier wrote:
Does anyone on this list have any knowledge of these, in particular
their "compatibility/similarity" with respectively Tomcat v ? and Apache
httpd v ?
Tomcat's only real "compatibility" questions are:
1. What servlet/JSP specification are we talking?
2. Need "full" J2EE support (EJB, MQ, etc.)?
#1 can be answered here:
http://en.wikipedia.org/wiki/Websphere#WebSphere_compatibility_matrix
Looks like the equivalent Tomcat version would be 5.5.
#2 is also easy: Tomcat does not support that stuff. Chuck's suggestion
that JBoss might be a better comparison is a good one. There's also
Sun's Glassfish.
I'm not sure about Websphere's httpd-like capabilities, but Websphere
/is/ Java-based so you'll have all the oddities that you may have heard
of when using Perl from Java or having to write filters to do things
like mod_rewrite or mod_headers do for you in httpd (urlrewrite, your
favorite Java tool, is of course a good option for the former).
Chris and others, thanks for the above info.
The following is a quote from Eric Covener on the Apache httpd list. I
believe he is one of the Apache httpd committers.
quote
WebSphere Application Server is not related to Tomcat, except that
they implement some of the same standard.
IBM HTTTP Server is Apache HTTP Server-based with notable difference
of SSL (runtime and module). Versions 6.x are based on 2.0.x and 7.0
is based on 2.2
...
mod_jk would be replaced by the websphere plugin
mod_perl you'd have to provide yourself and may take a little effort
to build against IHS.
unquote
So, it looks like :
- Websphere itself is a Java servlet server, unrelated to Tomcat despite
my mistaken impressions to the contrary, but implementing the same
servlet specification as Tomcat. It seems to have additional
functionalities compared to Tomcat, but since I do not understand them
and think I don't need them, it should be ok.
I basically wanted to know if I could run a couple of servlets on it
which I run on Tomcat (answer most probably yes), and run also the
UrlRewriteFilter (also probably yes) and the Jespa NTLM authentication
filter (maybe yes, I'll ask ioplex).
Websphere by itself, like Tomcat, can probably serve static content too.
- in addition to Websphere proper (the servlet server), there is also an
Apache httpd derived IBM HTTP server in that package. It uses a
different httpd/servlet server connector than mod_jk
, and may or may not support mod_perl easily. Which for me means it
doesn't, since I probably won't have time to work out the kinks.
That is all valuable information, and I thank everyone.
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