[Yanel-dev] deployment
simon
simon at 333.ch
Wed Jan 18 10:29:59 CET 2012
thanks very much for your fast and detailed answer.
cheers
simon
Am 18.01.2012 10:19, schrieb basZero:
> Hi Simon,
>
> in larger enterprise setups there is always a web server in front of
> the application server (tomcat, glassfish, etc.).
> there are many advantages for having a web server in front of the app
> server:
> - you can scale better (with plugins like mod_jk or alike you can
> distribute the load over N application servers. Of course, the plugin
> must support session stickyness, so that request with the same session
> cookie gets forwarded to the same app server.
> - you can serve static content from the web server. this way you have
> much less "noise" on the app server. Of course: web server must have
> access to the content, so the deployment model might look different,
> if web and appserver are on physically different machines
> - you can easily switch to a static maintenance page: you configure
> the web server to show a certain page. during this time, you can
> modify the app servers in the back end. if done, you can go back to
> the normal configuration where requests are routed to the app servers
> - for highly secure applications, it's probably a must to introduce a
> web server, as you can much better protect your app server from
> unwanted requests (see for instance "perimeter authentication")
>
> downside of it is:
> - you have more infrastructure to maintain
> - more complex monitoring setup
> - more expensive
> - more complex support demand (if something goes wrong, you have to
> analyze more)
>
> cheers
> balz
>
>
>
> On Wed, Jan 18, 2012 at 10:10 AM, simon <simon at 333.ch
> <mailto:simon at 333.ch>> wrote:
>
> hi all
>
> just wondering why yanel resp. tomcat is mostly deployed behind an
> apache?
> what's the reason and does someone has experience in using the
> tomcat without an apache web server in front?
>
> cheers
> simon
> --
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>
>
>
>
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