How to Decouple a Legacy System

How to Decouple a Legacy System

There are many articles explaining how to make a good design and what rules to follow. In this note we will see a concrete example on how to convert a legacy design into a better one.

There are many articles explaining how to make a good design and what rules to follow. In this note we will see a concrete example on how to convert a [legacy design_](https://en.wikipedia.org/wiki/Legacy_system) into a better one._

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The problem

Many existing systems have coupling problems. Therefore, their maintainability is reduced. Making a change in this type of system brings a large ripple effect.

Coupling: The one and only software design problem

A root cause analysis of all failures of our software will find a single culprit with multiple costumes.

codeburst.io

Let’s assume we have an existing process.

The system applies various algorithms to deduce the hyper-parameters of a supervised learning model.

A new requirement is requested:

To be able to see, in production, data on the performance of each strategy in real time.

software-development solid legacy-code programming refactoring visual studio code

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