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For 2023 (and 2024 ...) - we are now fully retired from IT training.
We have made many, many friends over 25 years of teaching about Python, Tcl, Perl, PHP, Lua, Java, C and C++ - and MySQL, Linux and Solaris/SunOS too. Our training notes are now very much out of date, but due to upward compatability most of our examples remain operational and even relevant ad you are welcome to make us if them "as seen" and at your own risk.

Lisa and I (Graham) now live in what was our training centre in Melksham - happy to meet with former delegates here - but do check ahead before coming round. We are far from inactive - rather, enjoying the times that we are retired but still healthy enough in mind and body to be active!

I am also active in many other area and still look after a lot of web sites - you can find an index ((here))
Java web application for teaching - now with sessions and clustering / load balancing demonstrations

I regret naming "latmjdemo" with that name when I prut together a web application for the Java version of our web deployemnt course. The nameing isn't random:
• L - Linux, the operating system
• A - Apache - the Apache httpd web server that's commonly used to front web sites
• T - Tomcat - the Apache Tomcat (formerly Jakarta Tomcat) web server that provides the Java Servlet container
• M - MySQL - the database commonly used for data store and access
• J - Java - the programming language that's usually used to write substantial web apps.
Not only are these letters in this order a real "mouthful", but hosting may be on a Unix or Windows box, NginX may be used a the web server, Maria DB or SQLite may be the database and the Java source may have been replaced by Scala - yet the principles remain very much the same and our Deploying Apache / Tomcat course remains rather relevant until several elements are replaced.

So today I have copied (with no source code nor HTML changes needed!) latmjdemo.war to WellHouseApp.war, made a couple of minor revisions, and added further demonstrations into the application. These have been available as source code on our web site anyway - but they're now in the main distribution for the "tomcat course".
Barman - a session tracking demo
Landlord - sessions and application wide retained information
PubWatch - sessions across multiple servers for clustering and load balance training

Both old and new web applcations are available for delegates (and others) to download from our servers -
• latmjdemo [here]
• WellHouseApp [here]

(written 2015-02-20, updated 2015-02-19)

 
Associated topics are indexed as below, or enter http://melksh.am/nnnn for individual articles
A690 - Web Application Deployment - Clustering and load balancing
  [934] Clustering, load balancing, mod_rewrite and mod_proxy - (2006-11-21)
  [1121] Sharing the load with Apache httpd and perhaps Tomcat - (2007-03-29)
  [1771] More HowTo diagrams - MySQL, Tomcat and Java - (2008-08-24)
  [1993] Load Balancing - Hardware or Software? - (2009-01-15)
  [1995] Automated server heartbeat and health check - (2009-01-16)
  [2059] Sharing the load between servers - httpd and Tomcat - (2009-02-28)
  [2482] Load balancing with sticky sessions (httpd / Tomcat) - (2009-10-29)
  [2483] Clustering on Tomcat - (2009-10-30)
  [3293] Distributing the server load - yet ensuring that each user return to the same system (Apache httpd and Tomcat) - (2011-05-18)
  [3339] Simplest ever proxy configuration? - (2011-06-28)
  [3892] Distributed, Balanced and Clustered Load Sharing - the difference - (2012-10-13)

J906 - Java - Servlets in More Detail
  [479] New servlet from old - (2005-10-28)
  [1495] Single login and single threaded models - Java and PHP - (2008-01-04)
  [1550] Java (JSP and Servlet examples) live on our server - (2008-02-23)
  [1909] javax.servlet cannot be resolved - how to solve - (2008-11-26)
  [2183] Servlet life cycle, and Java Servlet variable scope - (2009-05-16)
  [2652] Reading and writing cookies in Java Servlets and JSPs - (2010-02-26)
  [2717] The Multiple Inheritance Conundrum, interfaces and mixins - (2010-04-11)
  [3044] Changing a Servlet - more that just editing and compiling - (2010-11-12)
  [4431] A Java servlet that is also a stand alone program. And a server that is also a web client. - (2015-02-19)

J901 - Java - Servlets
  [3997] Servlet v JSP (Java Server Page). What is the difference? - (2013-02-06)


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Different views of a Welsh Valley - but headed home
Java web application for teaching - now with sessions and clustering / load balancing demonstrations
The spirit of Java - delegating to classes
Wind Turbines - beauty or menace?
Using the lead - passing arrays and other collections in Java
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This is a page archived from The Horse's Mouth at http://www.wellho.net/horse/ - the diary and writings of Graham Ellis. Every attempt was made to provide current information at the time the page was written, but things do move forward in our business - new software releases, price changes, new techniques. Please check back via our main site for current courses, prices, versions, etc - any mention of a price in "The Horse's Mouth" cannot be taken as an offer to supply at that price.

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