Strangler Pattern
The Strangler Pattern is a software architecture pattern used for incrementally migrating a legacy system to a new system by gradually replacing specific pieces of functionality. It involves creating a new system that wraps around or coexists with the old one, allowing new features to be developed in the new system while old functionality is slowly 'strangled' or replaced over time. This approach minimizes risk by enabling continuous delivery and avoiding a risky 'big bang' rewrite.
Developers should use the Strangler Pattern when dealing with monolithic legacy systems that are difficult to maintain or scale, but where a complete rewrite is too risky or disruptive. It is particularly useful in scenarios requiring modernization of enterprise applications, such as migrating from on-premises to cloud-based architectures or updating outdated technology stacks, as it allows for incremental changes without downtime. This pattern helps reduce technical debt while ensuring business continuity during the transition.