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copied!<p>First of all you have to define your requirements. Something like:</p> <ul> <li>max-concurrent-connections</li> <li>max-request-processing-time</li> <li>etc</li> </ul> <p>After that I would suggest to do extensive load testing. Create basic (but close to real life) implementation of your server and start testing.</p> <p>Initially you can use <em>ab</em> tool and later switch to JMeter, for example.</p> <p>ab will generated something like the following:</p> <pre><code> ab -c 10 -n 100 http://www.xyz.com/ This is ApacheBench, Version 1.3d <$Revision: 1.73 $> apache-1.3 Copyright (c) 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/ Copyright (c) 2006 The Apache Software Foundation, http://www.apache.org/ Benchmarking www.xyz.com (be patient).....done Server Software: Apache-Coyote/1.1 Server Hostname: www.xyz.de Server Port: 80 Document Path: / Document Length: 3112 bytes Concurrency Level: 10 Time taken for tests: 0.659 seconds Complete requests: 100 Failed requests: 0 Broken pipe errors: 0 Total transferred: 367003 bytes HTML transferred: 339208 bytes Requests per second: 151.75 [#/sec] (mean) Time per request: 65.90 [ms] (mean) Time per request: 6.59 [ms] (mean, across all concurrent requests) Transfer rate: 556.91 [Kbytes/sec] received Connnection Times (ms) min mean[+/-sd] median max Connect: 0 0 0.5 0 6 Processing: 8 63 144.6 12 514 Waiting: 8 63 144.7 12 513 Total: 8 64 144.8 12 514 Percentage of the requests served within a certain time (ms) 50% 12 66% 15 75% 19 80% 19 90% 491 95% 491 98% 512 99% 514 100% 514 (last request) </code></pre> <p>It might be helpful to create a plot:</p> <p><img src="https://i.stack.imgur.com/pOjmT.png" alt="enter image description here"></p> <p>Having that you can proceed with all performance optimizations and tweaking, because it will be possible to see results immediately.</p> <p>It is likely you'll need to tune your application first, but after that you have quite a lot of options, including the following:</p> <ul> <li>JVM tuning (GC tuning, etc)</li> <li>Connectors tuning</li> <li>Compression</li> <li>NIO</li> <li>HTTP 1.1 specific stuff</li> <li>and so on</li> </ul> <p>Just use correct approach and start doing something -- it will require some time.</p> <p><strong>EDIT</strong> Tomcat tuning tips</p> <p>Frankly speaking there are so much different articles on this topic:</p> <ul> <li><a href="http://my.safaribooksonline.com/book/programming/java/0596003188/tomcat-performance-tuning/tomcat-chp-4" rel="nofollow noreferrer">Chapter 4. Tomcat Performance Tuning</a></li> <li><a href="http://blog.springsource.org/2008/10/14/optimising-and-tuning-apache-tomcat-part-2/" rel="nofollow noreferrer">OPTIMISING AND TUNING APACHE TOMCAT</a></li> <li><a href="http://www.datadisk.co.uk/html_docs/java_app/tomcat6/tomcat6_tuning.htm" rel="nofollow noreferrer">Tomcat 6 performance tuning</a></li> <li><a href="http://javamaster.wordpress.com/2013/03/13/apache-tomcat-tuning-guide/" rel="nofollow noreferrer">Tomcat configuration $Tomcat/conf/server.xml</a></li> </ul> <p>There is no 100% universal solution, you should do deep investigation yourself</p>

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