10,000 Virtual Hosts in a Tomcat instance
Hi, I am quite a Tomcat newbie. I am building an web application that host about 10,000 websites (only single static HTML for each website). Each website is reference using a subdomain i.e. website1.mycompany.com, website2.mycompany.com, and so on. So I am planning to add these subdomain as virtual host into a Tomcat instance (this will be done using JMX when Tomcat startup). I am wondering if anyone has added 10,000 virtual hosts to Tomcat before, and whether Tomcat can handle this. Thank you in advance.
Re: 10,000 Virtual Hosts in a Tomcat instance
KEGan ha scritto: Hi, I am quite a Tomcat newbie. I am building an web application that host about 10,000 websites (only single static HTML for each website). Each website is reference using a subdomain i.e. website1.mycompany.com, website2.mycompany.com, and so on. a question: why do you want to use tomcat to serve static HTML, why Apache httpd isn't useful for you? Edoardo -- [EMAIL PROTECTED] AIM: edoardopn Jabber: [EMAIL PROTECTED] tel:075 9142766 - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: 10,000 Virtual Hosts in a Tomcat instance
Edoardo, The websites can be added and edited dynamically by the corresponding owners. I am buidling something like Blogger.com. Where users can edit their websites and published it. The engine is built using Tapestry. Currently, I am using a servlet filter to forward Http requests to the corresponding directories based on the subdomain. I think using virtual hosts in tomcat would be a cleaner solution. The reason for using Tomcat is simply ease of use, and I can dynamically configure Tomcat using JMX (e.g. to add subdomain). Also, I have read that using Tomcat to serve static HTML isnt really any slower compare to Apache HTTP Server. I wanted to find out from the Tomcat user commnunity if anyone is using Tomcat with a large amount of virtual hosts. If anyone has any experience on this, I will greatly appreciate if you can shed some light. Thanks. On 8/26/06, Edoardo Panfili [EMAIL PROTECTED] wrote: KEGan ha scritto: Hi, I am quite a Tomcat newbie. I am building an web application that host about 10,000 websites (only single static HTML for each website). Each website is reference using a subdomain i.e. website1.mycompany.com, website2.mycompany.com, and so on. a question: why do you want to use tomcat to serve static HTML, why Apache httpd isn't useful for you? Edoardo -- [EMAIL PROTECTED] AIM: edoardopn Jabber: [EMAIL PROTECTED] tel:075 9142766 - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: 10,000 Virtual Hosts in a Tomcat instance
KEGan wrote: Hi, I am wondering if anyone has added 10,000 virtual hosts to Tomcat before, and whether Tomcat can handle this. There are no limits except memory available to the JVM. The performance itself should depend only on the file system, and I would suggest not to put all 1 homes inside the same directory root. Regards, Mladen. - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: 10,000 Virtual Hosts in a Tomcat instance
Edoardo Panfili wrote: a question: why do you want to use tomcat to serve static HTML, why Apache httpd isn't useful for you? Having 1 homes makes no difference if you use Tomcat or Httpd. In that case its more up to the OS rather then web server itself. Regards, Mladen. - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: 10,000 Virtual Hosts in a Tomcat instance
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 What is this supposed to become? Do you want 10,000 domains on the tomcat? or do you want 10,000 webapps? The JVM will die if you do this with 10,000 webapps Andrew On 26/08/2006, at 11:36 AM, Mladen Turk wrote: KEGan wrote: Hi, I am wondering if anyone has added 10,000 virtual hosts to Tomcat before, and whether Tomcat can handle this. There are no limits except memory available to the JVM. The performance itself should depend only on the file system, and I would suggest not to put all 1 homes inside the same directory root. -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.1 (Darwin) iD8DBQFE8BevW126qUNSzvURAuUvAJ9imCr0QgPH9GtRWoP+Rn17cKrYgACfTmoy HaoJLfqu8Y+gtR7sU1PAPCA= =lN6F -END PGP SIGNATURE- - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: 10,000 Virtual Hosts in a Tomcat instance
Andrew Miehs wrote: The JVM will die if you do this with 10,000 webapps Why do you think it will die? There are systems with 64-bit JVM's and terabytes of memory. Regards, Mladen. - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: 10,000 Virtual Hosts in a Tomcat instance
Ok - Theoretically it may work... Who do you know that has a machine with Terabytes of memory? And is using it for web hosting?! The JVM will spend all its time doing context switching and garbage collection... Andrew On 26/08/2006, at 11:49 AM, Mladen Turk wrote: Andrew Miehs wrote: The JVM will die if you do this with 10,000 webapps Why do you think it will die? There are systems with 64-bit JVM's and terabytes of memory. - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: 10,000 Virtual Hosts in a Tomcat instance
Thanks Mladen for the valueable reply. Andrew, on your question : it is 10,000 domains that serves 10,000 different static HTML. One HTML for each domain. How much memory does 1 webapp takes in Tomcat ? Would it be ok with 10,000 domains pointing to 10,000 webapps but each webapp serves only static HTML? On 8/26/06, Andrew Miehs [EMAIL PROTECTED] wrote: -BEGIN PGP SIGNED MESSAGE- Hash: SHA1 What is this supposed to become? Do you want 10,000 domains on the tomcat? or do you want 10,000 webapps? The JVM will die if you do this with 10,000 webapps Andrew On 26/08/2006, at 11:36 AM, Mladen Turk wrote: KEGan wrote: Hi, I am wondering if anyone has added 10,000 virtual hosts to Tomcat before, and whether Tomcat can handle this. There are no limits except memory available to the JVM. The performance itself should depend only on the file system, and I would suggest not to put all 1 homes inside the same directory root. -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.1 (Darwin) iD8DBQFE8BevW126qUNSzvURAuUvAJ9imCr0QgPH9GtRWoP+Rn17cKrYgACfTmoy HaoJLfqu8Y+gtR7sU1PAPCA= =lN6F -END PGP SIGNATURE- - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: 10,000 Virtual Hosts in a Tomcat instance
Andrew Miehs wrote: Ok - Theoretically it may work... Who do you know that has a machine with Terabytes of memory? And is using it for web hosting?! The JVM will spend all its time doing context switching and garbage collection... Look, there was a time when I thought that 1MB or RAM was something no one will ever need. Further more the box occupied entire room. Of course it was back in 80's, but now (after couple of decades being in the business), I always presume that there are no limits. Regards, Mladen. - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: 10,000 Virtual Hosts in a Tomcat instance
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 If you are only delivering static content, then use Apache or Lighttpd http://www.lighttpd.net/ This is NOT what tomcat is designed for As for how much memory, no idea - but it cant be good Andrew On 26/08/2006, at 12:00 PM, KEGan wrote: Thanks Mladen for the valueable reply. Andrew, on your question : it is 10,000 domains that serves 10,000 different static HTML. One HTML for each domain. How much memory does 1 webapp takes in Tomcat ? Would it be ok with 10,000 domains pointing to 10,000 webapps but each webapp serves only static HTML? -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.1 (Darwin) iD8DBQFE8B1vW126qUNSzvURAsa7AJ0ThoV+7mOGrdOMGhHBbJPtxv75OQCfUa4Z R2X7ESQkd1h/vRuak0MdD4w= =jIyr -END PGP SIGNATURE- - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: 10,000 Virtual Hosts in a Tomcat instance
Andrew Miehs wrote: If you are only delivering static content, then use Apache or Lighttpd http://www.lighttpd.net/ This is NOT what tomcat is designed for In theory the threaded model should consume less memory and less CPU cycles compared with prefork model. Of course if your application is stable then you should always prefer worker-mpm over the prefork-mpm. Did you ever tried to hit the Httpd with 1 concurrent connections? I did, and Tomcat uses less memory then Apache httpd, and that's why it is 2 times faster then httpd. Regards, Mladen. - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: 10,000 Virtual Hosts in a Tomcat instance
I tried to use only Tomcat since the static content is dynamically generated. Think blogging application. However, users dont update the data that often, that's why I generate the content and make it static for web access, as oppose to dynamically generate the content each time it is requested. Using minimal CPU cycles. Also, I tried to use ONLY Tomcat and do away with integration of Apache HTTP + Tomcat, or Lighthttpd + Tomcat, because its would be easier to maintain. I will try to write some tests and see how much memory and such. Then post back here. This may take a while. Worse come to worst, I will keep only 1 webapp, then use servlet filter to return different HTML depending on the httpServletRequest.getServerName(). ~KEGan On 8/26/06, Mladen Turk [EMAIL PROTECTED] wrote: Andrew Miehs wrote: If you are only delivering static content, then use Apache or Lighttpd http://www.lighttpd.net/ This is NOT what tomcat is designed for In theory the threaded model should consume less memory and less CPU cycles compared with prefork model. Of course if your application is stable then you should always prefer worker-mpm over the prefork-mpm. Did you ever tried to hit the Httpd with 1 concurrent connections? I did, and Tomcat uses less memory then Apache httpd, and that's why it is 2 times faster then httpd. Regards, Mladen. - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: 10,000 Virtual Hosts in a Tomcat instance
Dear Mladen, Are we referring to 10,000 Virtual servers or 10,000 Connections? And the answer is yes to 1 connections. Yes I would use worker-mpm or better still an epoll based httpd daemon, like lighttpd or zeus. Regards Andrew On 26/08/2006, at 12:18 PM, Mladen Turk wrote: Andrew Miehs wrote: If you are only delivering static content, then use Apache or Lighttpd http://www.lighttpd.net/ This is NOT what tomcat is designed for In theory the threaded model should consume less memory and less CPU cycles compared with prefork model. Of course if your application is stable then you should always prefer worker-mpm over the prefork-mpm. Did you ever tried to hit the Httpd with 1 concurrent connections? I did, and Tomcat uses less memory then Apache httpd, and that's why it is 2 times faster then httpd. - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: 10,000 Virtual Hosts in a Tomcat instance
Referring to 10,000 virtual host in one tomcat instance. On 8/26/06, Andrew Miehs [EMAIL PROTECTED] wrote: Dear Mladen, Are we referring to 10,000 Virtual servers or 10,000 Connections? And the answer is yes to 1 connections. Yes I would use worker-mpm or better still an epoll based httpd daemon, like lighttpd or zeus. Regards Andrew On 26/08/2006, at 12:18 PM, Mladen Turk wrote: Andrew Miehs wrote: If you are only delivering static content, then use Apache or Lighttpd http://www.lighttpd.net/ This is NOT what tomcat is designed for In theory the threaded model should consume less memory and less CPU cycles compared with prefork model. Of course if your application is stable then you should always prefer worker-mpm over the prefork-mpm. Did you ever tried to hit the Httpd with 1 concurrent connections? I did, and Tomcat uses less memory then Apache httpd, and that's why it is 2 times faster then httpd. - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: 10,000 Virtual Hosts in a Tomcat instance
Andrew Miehs wrote: Are we referring to 10,000 Virtual servers or 10,000 Connections? And the answer is yes to 1 connections. It does not matter. 1 Virtual hosts in Apache would require as much memory as 1 Hosts in Tomcat. Once when you break the JVM latency, there is no much difference between Java or any other 'optimized' program. Regards, Mladen. - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: 10,000 Virtual Hosts in a Tomcat instance
Stupid question, Why don't you implement the 'virtual' hosts inside the one 'webapp'? And not create 10,000 web apps? That the App itself deals with the virtual hosts (by reading the host header), and not tomcat? Andrew On 26/08/2006, at 12:30 PM, KEGan wrote: I tried to use only Tomcat since the static content is dynamically generated. Think blogging application. However, users dont update the data that often, that's why I generate the content and make it static for web access, as oppose to dynamically generate the content each time it is requested. Using minimal CPU cycles. Also, I tried to use ONLY Tomcat and do away with integration of Apache HTTP + Tomcat, or Lighthttpd + Tomcat, because its would be easier to maintain. - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
