Tackling the Rewrite vs Rescue dilemma

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Tackling the Rewrite vs Rescue dilemma


With the current IT landscape requiring new features, faster and cheaper applications, a question that is on top of the mind of most software developers is Rewrite vs Rescue. A lot of developers tend to suggest rewriting legacy code instead of rescuing. But first up, what is the difference between rewrite vs rescue.

Most often, you want to rewrite the software because of poor design or outdated technology rather than fix it. That’s rewriting. However, the downside with rewriting is takes a long time and it is usually difficult to make change requests during rewriting. Also, rewriting may lead to new bugs which have to be dealt with in the application.

But the greatest hurdle to the rewriting effort is that the existing design doesn’t add to the functionality. With applications evolving over a period to meet the needs of users, rewriting to reproduce the features of an existing system can be a very difficult effort to define and scope.

That’s why most developers believe in skipping rewrite and going with rescue. Rescuing is the process of continuously improving the existing code, without changing the behavior of the application. At TechTrendsIT, we do it by making the application healthy by continuous integration and streaming the build process and by minimizing dependencies on application server. This is where refactoring — changing the internal structure of the code without modifying the behaviour comes into play. When combined with rigorous integration, refactoring becomes a effective tool to ensure the best application.

Why refactoring scores over rewriting?

Faster release cycle: The best part about refactoring is you have a working software and can release updates regularly.
Less bugs: Refactoring means choosing the time needed to rewrite part of code which means fewer bugs.

Less risk: Since refactoring is done in small steps and not much functionality is changed, this process makes the application more efficient and use-friendly without incurring the high cost of rebuilding.

At TechTrendsIT we offer 30 day bootstrapping process — bootstrap development efforts by combining outside development with proven processes with our highly-skilled global team with high end on site consulting. With an integrated team approach our clients continue development after version 1.0 and beyond with the expertise we provide with our initial engagement of 30 days.

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