Legacy Management

Good insights from this article:

How to strangle a legacy codebase

The strategy is simple:

Progressively delete the old code base, in favor of a new one.

Here’s the plan:

  • Have the new code acts as a proxy for the old code. Users use the new system, but it just redirects to the old one.
  • Re-implement each behavior to the new codebase, with no change from the end-user perspective.
  • Progressively fade away the old code by making users consume the new behavior. Delete the old, unused code.

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