Re: Any Comparisons? -- mod_wl vs mod_proxy vs mod_jk

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Hello Nick (niq), ezra-s here.

I don't vouch for oracle documentation as inquestionable but I'll try to explain the best I can in my experience.

WLSRequest on 
* Lower overhead with WLSRequest on as opposed to SetHandler weblogic-handler common method to handle when locations / extensions should be proxied to weblogic backend.
* Documentroot on slow filesystem, as of nfs, I have experiened this.
 * Resolves 403 errors for URIs which cannot be mapped to the


For what I understand it means that filesystem is not checked with WLSRequest, but it is when you use the common SetHandler weblogic-handler method to make a specific location/file be proxied to weblogic server.

About "filesystem length restrictions" I also have seen this with requests with a very long uri, we even have had some queries about this one in #httpd. Not sure it 100% related, but when compiling apr "make test" will report an error for this too, in ext4 at least, haven't checked others filesystems.

Regards (don't punish me too much! ;P)

2015-02-09 10:52 GMT+01:00 Nick Kew <nick@xxxxxxxxxxxx>:
On Mon, 2015-02-09 at 08:13 +0100, Daniel wrote:


>         Has anyone seen, or have, any links that can help outline the
>         difference?

Questions like that very often get answers based on comparing
a new-and-better solution against something ancient -
like a 1997 apache version.

There's nothing wrong with this answer in particular,
but I think answers like this do need challenging
(you've got another followup that appears to be
premised on an outdated description of mod_proxy).

> * Lower web server processing overhead in general

Lower than what?  And why?

> * Resolves substantial performance degradation when the web server
> DocumentRoot is on a slow filesystem

Bizarre.  Why would you put document root on a slow filesystem?
In any case, proxy requests run without reference either to
documentroot or the filesystem.  Unless you go out of your way
to make your server complex and inefficient!

> * Resolves 403 errors for URIs which cannot be mapped to the
> filesystem due to the filesystem length restrictions

WTF?  Filesystem length restrictions?  That smells of MSDOS
8.3 filenames.  Is there really any modern platform that
might be affected, or was the author of that scraping the
bottom of the barrel for marketing claims?

I'm sure mod_wl has its merits, but claims like these do
it no favours.  Or can you substantiate them?

--
Nick Kew



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Daniel Ferradal
IT Specialist

email         dferradal@xxxxxxxxx

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