1GB is certainly pretty small for the JVM world, if you’re thinking of running multiple apps / sites as separate JVM processes.
However, there are several ways around that. It’s common in the JVM world to have a single “web server” process load and run multiple “web applications”. A servlet container (Tomcat, Jetty, JBoss…) runs multiple apps each packaged as a WAR file (a zip file with some additional metadata). Another option is to package multiple applications into one uberjar and start up multiple apps on different ports directly inside your own code, or you could use a single app with middleware that selects a different set of routes for each different domain / port / however you distinguish between your apps externally. Bottom line: having each app as a separate uberjar, spinning up in a separate JVM isn’t the most scalable way of running multiple apps on a single server. For comparison, at World Singles, we have about 100 sites running on (a cluster of instances of) a single web application under the hood. The domain being requested determines how the request is handled – in our case the skin and theme of each site, along with a lot of other metadata, is all dynamic and based on the domain name. Our sites are similar enough that this is possible. That’s for the main customer-facing sites. We also have an affiliate web site and an internal admin web site. Those three codebases are each, essentially, a WAR-based app and all three can run on a single Tomcat instance (on each server in the cluster). We run a single JVM with 10GB heap configured for Tomcat on each of a cluster of servers, each with 64GB RAM (our database servers are in a separate cluster and have 128GB RAM each, I believe). Sean Corfield -- (970) FOR-SEAN -- (904) 302-SEAN An Architect's View -- http://corfield.org/ "If you're not annoying somebody, you're not really alive." -- Margaret Atwood On 1/3/17, 2:16 PM, "Seth Archambault" <clojure@googlegroups.com on behalf of sethvi...@gmail.com> wrote: Haha thanks for pointing that out - I mispoke - 1024 mb of ram - 1 gig of ram. Using a $10 a month Vultr account. 1000 gigs would be a tad expensive! On Monday, January 2, 2017 at 8:27:19 PM UTC-5, William la Forge wrote: Seth, something seems amiss. 1,000 GB is 1,000,000 MB. At 84 mb per jar, you can spin up 11,904 jar files. Which is worse than only being able to run only dozens of PHP apps. --b -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups "Clojure" group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups "Clojure" group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
