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Why put Apache httpd in front of Apache Tomcat

Classroom for Open SourceDoes it seem odd to you that Apache Tomcat is a web server ... and yet the majority of sites run with another web server - Apache httpd - in front of it. Why do they do it?

There's a whole host of reasons! They including better logging, load balancing, security, speed of serving static pages such as images, allowing other (non-Java) content to work efficiently on the same domain, more configuration flexibility and so on. I sometimes describe Tomcat as being like an aircraft that will get you from "a" to "b" .... but very few people actually want to go from "a" to "b" - they want to go from somewhere 20 miles from "a" to somewhere 40 miles from "b", so the need something else to complete the journey - a car, or httpd.

So we offer two web server courses - there's a course that covers Apache httpd alone - the majority of non-Java sites run with that server, and a course that covers Apache Tomcat, and also some Apache httpd and how the two interface - which suits that majority of Apache Tomcat users. Both courses are two days in duration - the 'pure httpd' one covering Apache httpd in a lot more detail that the combined course, where httpd is more likely to be used as a wrapper rather than a significantly configured workhorse.


Illustration - preparing the training room (at a customer site somewhere in England!) for a Linux based web server deployment course
(written 2009-03-12, updated 2010-06-23)

 
Associated topics are indexed as below, or enter http://melksh.am/nnnn for individual articles
A601 - Web Application Deployment - Apache httpd - an overview
  [4434] Public training courses - upcoming dates - (2015-02-21)
  [4064] Apache httpd - a robust, open source web server - (2013-04-16)
  [2186] An FAQ on the Apache httpd and Apache Tomcat web servers, and on using them together - (2009-05-17)
  [2063] Internal Dummy Connections on Apache httpd - (2009-03-02)
  [2054] Tuning httpd / the supermarket checkout comparison - (2009-02-26)
  [2038] Sticky Sessions with mod_jk (httpd to Tomcat) - (2009-02-12)
  [2016] Apache httpd and Apache Tomcat miscellany - (2009-01-30)
  [1897] Keeping on an even keel - (2008-11-21)
  [1593] Keep the client experience easy - single server contact point - (2008-03-27)
  [1265] Apache, Tomcat, Jakarta, httpd, web server - what are they? - (2007-07-13)
  [924] The LAMP Cookbook - Linux, Apache, MySQL, PHP / Perl - (2006-11-13)
  [659] Web Application Components - (2006-03-28)
  [576] Why run two different web servers - (2006-01-25)

A651 - Web Application Deployment - Tomcat Overview
  [3997] Servlet v JSP (Java Server Page). What is the difference? - (2013-02-06)
  [2753] You do not just fly - that is just part of the journey - (2010-05-06)
  [1941] Server - Service - Engine - Host, Tomcat - (2008-12-14)
  [1771] More HowTo diagrams - MySQL, Tomcat and Java - (2008-08-24)
  [498] Why is Tomcat called Tomcat? - (2005-11-17)
  [49] Business is the predominant user of Tomcat, Perl and Tcl - (2004-09-15)


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Connecting jconsole remotely - the principles
Using ApacheBench and jconsole to test and monitor Tomcat
Java - Memory Allocation and garbage collection
A lot has changed - but the memory lingers on
Why put Apache httpd in front of Apache Tomcat
A New Advert for Well House Manor
Supporting Parkinsons and Trains
Weekday or Weekend PHP, Python and Perl classes?
Extra PHP Examples
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