Design patterns · interview question
In a checkout system, shipping cost calculations require data from a new web service, but the current system uses an older API. Which pattern helps integrate these systems?
Multiple choiceMediumchapter-13-curatedpremiumdesign-patternsproxy-and-adapter
Answer and explanation
Correct answer
A. Adapter
Why
The Adapter pattern is used to bridge the gap between incompatible interfaces, allowing the new web service to be used where the old API was expected.
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