Thought Papers | iGATE Patni. Refactoring Large Software Systems. Click here to view the complete list of archived articles This article was originally published in the Winter 2009 issue of Methods & Tools Refactoring Large Software Systems Sibylle Peter, Sven Ehrke, Canoo Engineering AG, Refactoring a software system means to refurbish it internally without interfering with its external properties. Refactoring is the process of changing a software system in such a way that it does not alter the external behavior of the code yet improves its internal structure. Fowler describes how to refactor code in a controlled and efficient manner. In this article we describe the different stages of a refactoring project. WebInvest, our current refactoring project, will be used as example throughout the article. Application Life Path The life path of a successful application can be divided into five different stages: Development, Introductory, Growth, Maturity and Infeasibility stage.
Figure 1: The life path of a long-living system Team Flexibility. Tuxedo-rehosting-twp-066458.
Data migration. Smart Legacy Modernization Resource Library. Methodology. ..:: Welcome to Synergics Solutions Pvt. Ltd. ::.. In some scenarios it is impossible to replace legacy systems because the system works satisfactorily, still it is necessary to upgrade and enhanced it with the latest technology. The most prominent technique is to provide a Web-based interface to a terminal-based application. We bring expertise into the modernization of the legacy systems. In our modernization of legacy projects, our methodology is as: Analysis, concepts and roadmaps.
Evaluate and develop the solution. Proof of concept. Optimization: Synergics works with the client to determine the best suited option for the legacy support needs. Replace : Applications or systems that are considerably outside the scope of the strategy. Modernize :We can modernize existing applications to maximize retained investment value.
Adabas Natural Migration and Modernization. Legacy modernization can make your application environments more efficient, responsive and competitive. It can also put your business in a better position to address new requirements such as cloud computing, mobility and virtualization. Dell application modernization services can help your business: Better understand the applications, databases and processes that run in your data center today and map out a modernization strategy for the future Reduce high infrastructure costs and streamline operations by re-hosting mainframe and proprietary UNIX applications with minimal change to industry-standard platforms Realize new initiatives and enhance agility by re-architecting legacy applications to modern architectures such as Java and .NET Upgrade your existing enterprise applications to the latest version or migrate them to more efficient platforms, including database conversions.
Re-Platform to the iSeries | Mainframe and Midrange Services | Custom Application Services- HCL Technologies | www.hcltech.com. Challenged with increasing sustenance cost and a compulsive need to improve the accessibility of legacy applications aggravated due to shrinking pool of legacy programming resources, re-hosting to the “System i” could be an option you would like to evaluate. Re-hosting retains the intellectual capital of your organization, grown over multiple years of investment, preserves ownership of critical applications and allows unlimited future modification and development. In a recent ITG paper on a comparative study on price/ performance of mid to large sized companies, it is highlighted how “System i” continues to enjoy the lowest TCO in comparison to Wintel-based client/ server platforms with the new power class of servers. With its integrated application, database and development environments, the sustenance cost is significantly reduced continuing to provide the same trusted reliability and scalability requirements provided by your legacy infrastructure.
Service Proposition. Legacy-rehosting. Modernizing Legacy Systems. This article was originally published in News at SEI on: December 1, 2002 Introduction The knowledge embodied in legacy systems represents a significant corporate asset. Managing long-term software evolution is critical, because systems cannot be easily replaced.
The concept of software evolution has existed for some time, as the following transcript of a talk by J.I. Schwartz at the second NATO Software Engineering Conference held in 1969 indicates: Managers must be willing to adapt as situations arise requiring changes in scope or technique. Developing evolvable systems adds costs to the initial development cycle [Sommerville 00]. For large enterprise systems, a strategy of design for evolvability is a necessity. Before systems can be evolved, they must be evolvable. COTS and Legacy Systems Systems are made up of many different types of components: Software modernization efforts may also replace existing legacy code with COTS components.
Risk-Managed Modernization Summary References.