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</script><!--End Google Analytics code--></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Preface</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="index.html">Prev</a> </td><th width="60%" align="center"> </th><td width="20%" align="right"> <a accesskey="n" href="ch01.html">Next</a></td></tr></table><hr></div><div class="preface" lang="en"><div class="titlepage"><div><div><h2 class="title"><a name="preface"></a>Preface</h2></div></div></div><p> | |
Increasing complexity in modern enterprise applications is a fact of life. | |
Developers not only have to deal with complex business logic, but also a myriad | |
of other concerns such as security, auditing, exposing business | |
functionality to external applications, and managing the evolution of | |
these concerns. The Spring Framework addresses these | |
needs by offering a Plain-Old Java Object (POJO) based solution that | |
lets you focus on your business logic. | |
</p><p> | |
Complex applications pose problems that go beyond using the right set of | |
technologies. You need to take into account other considerations such as | |
a simplified development process, easy deployment, monitoring deployed | |
applications, and managing changes in response to changing business needs. | |
This is where the Virgo Server comes into play. It offers a simple yet | |
comprehensive platform to develop, deploy, and service enterprise | |
applications. In this Programmer Guide, we explore the runtime portions of the | |
Virgo Server, the Virgo Server for Apache Tomcat, Virgo Jetty Server and the | |
Virgo Kernel, and learn how to develop applications to benefit from their | |
capabilities. | |
</p><div class="simplesect" lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="d0e73"></a>A Note to Virgo Kernel Programmers</h2></div></div></div><p> | |
Although this guide is written primarily for Virgo Server for Apache Tomcat programmers, much of it is also useful for | |
Virgo Kernel programmers who should simply ignore the web-related sections. | |
</p></div><div class="simplesect" lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="d0e78"></a>A Note to Virgo Nano Programmers</h2></div></div></div><p> | |
This guide is written primarily for Virgo Server for Apache Tomcat programmers. Although a base version of Virgo Nano, without the new provisioning | |
system, is used to build the Virgo Server for Apache Tomcat, much of this guide does not apply to Virgo Nano. The VN lacks regions support but has much | |
improved runtime footprint and startup time and also provides support for p2 provisioning. The Virgo Nano features are covered better in the | |
<a class="ulink" href="../../virgo-user-guide/html/index.html" target="_top">User Guide</a>. | |
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