Gatekeeper Pattern

Problem

• Need to broker requests between clients and the application or service, need to validate and sanitize the requests to provide an additional layer of security.

• Cloud services expose endpoints that allow client applications to call their APIs : APIs are exposed to malicious users.

Solution

The gatekeeper pattern can be used to protect storage, or it can be used as a more comprehensive façade to protect all of the functions of the application. This pattern acts like a firewall in a typical network topography. It allows the gatekeeper to examine requests and make a decision about whether to pass the request on to the trusted host that performs the required tasks.

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Diagram from Microsoft Documentation

Gatekeeper In Practice

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