Proxy is a structural pattern that provides a substitute or placeholder for another object. A proxy controls access to the original object, allowing you to perform something before or after the request gets through — such as lazy initialisation, access control, logging, caching, or remote communication. The client is unaware it is talking to a proxy.
ℹ️Core idea: implement the same interface as the real object, hold a reference to it, and intercept calls to add cross-cutting behaviour. The client never knows whether it is talking to the real object or the proxy.
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