Frerk Meyer's Weblog
Googles App Engine for Java is a cheap and powerful alternative for
hosting Java (and Groovy, Scala, JRuby, ...) web applications compared
to VPS hosting. How do both compare and what are the advantages and
disadvantages of each? Which offer is better for you and your requirements?
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Virtual private servers are offered with 32-bit and 64-bit operation systems since x86-64 server hardware is deployed more frequently at hosting companies. This gives you the choice to select an 64-bit JVM or an 32-.Bit JVM. Which one should you choose?
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What is the most memory saving hosting environment for Grails and Java web applications and which parameters influence the memory consumption? This is the start of a series of benchmark results with different combinations of popular hosting components.[Read More]
Java web applications don't need an Apache web server. In memory constrained systems like virtual private servers (VPS) you may get rid of the Apache web server to save memory and gain speed. The idea is to use iptables to replace port 80 in requests to port 8080 of the tomcat connector. Special problem on VPS systems are solved.[Read More]
Every server facing the internet should be protected by a firewall. Linux servers include the iptables firewall which is very capable. But on VPS systems this firewall is often restricted so much that many well known firewall configuration tools don't work. This article explains how to find out the firewall capabilities of your VPS system and how to configure a basic protection with a few hand coded firewall rules.[Read More]
Sun Java 5 automatic heap size dimensioning does not know about the memory management of a Linux virtual server instance and therefore fails to get the size right. Even simple calls like "java -version" or the installation by your Linux distribution package manager does fail.
Solutions for these kind of problems are given.
To host your Grails / Java web application on a dedicated or virtual server (vServer) you'll need to know how much main memory your application needs and how much heap space is available to your application in a known environment. I'll give you formulas I derived from extensive experiments and rule of thumb for calculation with examples.[Read More]
