Re: single large tomcat or multiple tomcats
On 30/12/2011 20:42, Christopher Schultz wrote: Ahmed, On 12/30/11 2:57 PM, S Ahmed wrote: I know with other frameworks (like python/rails) people tend to run multiple instaces of the web server and round robin requests to each using something like haproxy. Is this known in the tomcat community at all? Are you asking if the Tomcat community knows how python/rails users typically configure their servers? I would ask over there... If I have a server with 16GB ram, would it make sense to run a few tomcat processes on different ports and use haproxy to round robin requests to each tomcat instance? Is it a 64bit OS? Have you tested your application with a particular target number of users/requests in mind? If your webapp is stable, I would run a single, large JVM. If it's not stable, then running multiple JVMs will certainly increase your redundancy. A multi-JVM setup also allows you to upgrade one webapp instance and then the other to minimize (or eliminate) downtime -- see your other thread on this subject. If you have multiple webapps, then the choice is up to you. In production, we run separate webapps in separate JVMs -- that allows us the most flexibility and protection against one webapp suffering some problem like OOME and affecting the others. +1 Don't pick a model you like the sound of and try to squeeze your requirement into it. p I realize python/ruby do this because of their poor threading support. I have no idea. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org -- [key:62590808] signature.asc Description: OpenPGP digital signature
Re: single large tomcat or multiple tomcats
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Ahmed, On 12/30/11 2:57 PM, S Ahmed wrote: I know with other frameworks (like python/rails) people tend to run multiple instaces of the web server and round robin requests to each using something like haproxy. Is this known in the tomcat community at all? Are you asking if the Tomcat community knows how python/rails users typically configure their servers? I would ask over there... If I have a server with 16GB ram, would it make sense to run a few tomcat processes on different ports and use haproxy to round robin requests to each tomcat instance? If your webapp is stable, I would run a single, large JVM. If it's not stable, then running multiple JVMs will certainly increase your redundancy. A multi-JVM setup also allows you to upgrade one webapp instance and then the other to minimize (or eliminate) downtime -- see your other thread on this subject. If you have multiple webapps, then the choice is up to you. In production, we run separate webapps in separate JVMs -- that allows us the most flexibility and protection against one webapp suffering some problem like OOME and affecting the others. I realize python/ruby do this because of their poor threading support. I have no idea. - -chris -BEGIN PGP SIGNATURE- Version: GnuPG/MacGPG2 v2.0.17 (Darwin) Comment: GPGTools - http://gpgtools.org Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAk7+IkcACgkQ9CaO5/Lv0PApNACgrQ84MetzuqpOZeNzoLWrDiVb gMYAn00KRbbr6S7dOrRZHEQtxjzF6rDA =Mjhw -END PGP SIGNATURE- - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: single large tomcat or multiple tomcats
On Fri, Dec 30, 2011 at 11:57 AM, S Ahmed sahmed1...@gmail.com wrote: I know with other frameworks (like python/rails) people tend to run multiple instaces of the web server and round robin requests to each using something like haproxy. Is this known in the tomcat community at all? If I have a server with 16GB ram, would it make sense to run a few tomcat processes on different ports and use haproxy to round robin requests to each tomcat instance? I realize python/ruby do this because of their poor threading support. thanks! Take a look at: http://tomcat.apache.org/tomcat-7.0-doc/cluster-howto.html Tomcat has extensive clustering support. Best, Matt Tyson
