Front-End Switch

Improvement approachesArchitecture and code structurestub

Intent

Route front-end requests to either new or old backend systems, depending on their nature, content-negotiation or other request criteria. This is especially helpful to support Never Change Running System.

Related patterns

Never Change Running System stub
To minimize risks, you should try to refrain from changes to existing (working) code - as every change inevitably introduces new risks or even bugs.
Interface Segregation Principle
Reduce coupling between clients and service providers.

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