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  • DevOps Enterprise Adoption at CSG International with Erica Morrison

    Erica Morrison, from CSG International, talks about their DevOps journey, key initiatives and lessons learned.

  • Service-Oriented Architecture and Legacy Systems

    In this article, authors provide an overview of current SOA technologies and how to evolve in legacy environments. They also discuss the topics of SOAP vs. REST web services, Enterprise Application Integration and incremental transition to SOA in legacy environments.

  • Pragmatic Techniques for Maintaining a Legacy Application

    Maintaining a legacy application can make you feel like mice in a maze. In this article Ping Chen shares her experiences on how to pragmatically maintain a large legacy application. "Pragmatic” is the operative word; since a legacy application can have lots of technical debt, one has to be strategic in choosing the right battles.

  • Refactoring Legacy Applications: A Case Study

    To refactor legacy code, the ideal is to have a suite of unit tests to prevent regressions. However it's not always that easy. This article describes a methodology to safely refactor legacy code.

  • Tips to Developers Starting on Large Applications

    You've just started working on a large Java application. How would you go about understanding the code base? In a typical enterprise Java team, most of the senior developers who can help you are likely to be quite busy. Documentation will be sparse. You will need to quickly deliver and prove yourself to the team. How would you resolve such a situation? This article offers some suggestions.

  • Eight Quick Ways to Improve Java Legacy Systems

    Even Java systems can be "legacy" systems. This article explores 8 quick and relatively low risk ways to improve even the crustiest Java application. Applications that may have previously been written off as dead can find new life by using these tips to improve performance, reduce operations overhead and grease the gears of the development lifecycle.

  • Staying Safe and Sound Thanks to MDSD

    In this article, Andreas Kaltenbach explains how Model-Driven Software Development (MSDS) can help solving backward compatibility problems when creating a newer version of a software which can mean a new API or a new database schema that old clients cannot use. MSDS is used to negotiate the differences between versions to ease the upgrading process.

  • Using Logging Seams for Legacy Code Unit Testing

    Using logging seams you can easily create unobtrusive unit tests around legacy classes, without needing to edit class logic as well as avoiding behavior changes.

  • Dealing with Legacy Code

    Here's a three-pronged attack to use on the legacy code that everyone eventually inherits: Build, Automate, Test. Use this BAT to create a safety net to ensure your code continues to work the way you want it to. Richardson shows how this helps quickly identify and eliminate unintended side effects. See how your day-to-day work compares, and see if you need to approach your work differently.

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