When your Ruby On Rails Website gets famous you're going to wish you implemented proper caching. Are you worried? Maybe just a little?This tutorial is going to show everything you need to know to use Caching in your Rails applications, so when you get digg'd or slashdot'd you won't be left begging your hosting provider for more CPU processing power.

The unsung heroes of every application are the simple things like buttons, menus, and toolbars. In this article by Shea Frederick, Steve 'Cutter' Blades, and Colin Ramsay, we will cover how to add these items to our applications. Our example will contain a few different types of buttons, both with and without menus. A button can simply be an icon, or text, or both. Toolbars also have some mechanical elements such as spacers and dividers that can help to organize the buttons on your toolbars items. We will also cover how to make these elements react to user interaction.

Testing is one of the primary pain points for cross-platform mobile development. The complexity involved in replicating various environments can be daunting, time consuming, and expensive. Emulators are approximations of devices, at best, and creating a testing lab with actual devices can be cost-prohibitive. This article discusses a remote service called DeviceAnywhere, which allows you to use several actual mobile devices through a virtualized model.

Introduction
When developing corporate-level business applications (Enterprise Scale) customers often requires implementing support for extensibility of the application object model not modifying the system source code. Use of extensible domain model allows for development of new functionality without additional effort and overheads:

1) the application will be used for a more lengthy period
2) the system workflow can be modified over time when changing external factors
3) “setting” the application to fit specifics of an enterprise where it has been deployed.
The most simple and cost effective way to achieve the required functionality would be implementing extensible business entities in an application with the support of custom fields.

This chapter describes the benefits of the framework and how to build screens in the sample application using Spring MVC: a no-form controller, two form controllers, and a Spring HTTP interceptor.

XMLBeans version 2.1.0 provides programmatic access to create and update XMLBeans from schema artifacts, and to validate and capture errors that may occur during schema compilation and parsing of an XML document. In any enterprise applications ranging from Web service client/server to CRM and EAI products, as products mature the need arises to update existing schema artifacts. Moreover, everyone wants to simplify the maintenance of applications processing XML documents based on these schema artifacts. The XMLBeans API provides a simple and efficient way to create and maintain XMLBeans and offers rich custom error handling and reporting capabilities, both contributing to solving these problems.

This article illustrates these features with a series of examples. It assumes you have a familiarity with XMLBeans. For an XMLBeans primer, see the References section. The example code and other files mentioned in this article are available for download.

A new era of Web development is in full swing, and it is called Web 2.0. This has ushered in a new set of prototypical Web applications, including blogs, wikis, and mashups. Mashups are the focus of this tutorial, and you will see how a sample mashup can be built using a common set of technologies. This set includes JavaScript, Ajax, REST, JSON, and the Google Maps API. As a Web developer, it is important to understand how these tools fit together. In this tutorial I'll use these tools to easily build what is the ultimate Hello World mashup: a Google Maps mashup.

The Spring framework with its support to multiple Data Access frameworks/libraries and light-weight IoC container has steadily grown in popularity. In this article we will discuss the basics of Spring MVC. We will deal with the terms and terminologies related with Spring MVC and MVC. The later part of the article details the steps for developing components of a web-application using Spring MVC.

Adam Granicz shows how the functional programming language F#, along with WebSharper, can be used to tame mobile development.

In this second article in the series on using the Google Web Toolkit (GWT) to build Asynchronous JavaScript + XML (Ajax) applications, learn how to build the Apache Derby database for your Web application, and use it to drive the GWT. Part 1 of this series introduced you to GWT and demonstrated how you can use it to create a rich-client front end for a Web application. This time, you'll go behind the scenes and set up the back end with your database and the code used to convert the data to a format that GWT can use. By the end of this article, you'll be ready for the front end and back end to talk to each other.