Recognize and interpret essential integration concepts and terminology20% of the exam
API implementation, proxy, interface, client and invocation
The Anypoint Platform glossary terms for the parts of an API: the interface or specification (the contract), the implementation that realizes it, the instance, the proxy that applies policies in front of a backend, and the client application that invokes the API with its own credentials.
Define and correctly use the terms API implementation, API proxy, API interface, API client/consumer, and API invocation.
~6 min read · 4 practice questions ·
What the exam expects
- Name each part of an API in a scenario: interface (specification), implementation, instance, proxy, client and invocation.
- Explain what an API proxy does in front of a backend and when MuleSoft recommends one.
- Identify which party holds client credentials when a Client ID Enforcement policy protects an API.
- Avoid calling the first component that receives a call, or the code that defines endpoints, the wrong name.
Key terms:
- API interface: the specification, the human- and machine-readable contract for the API.
- API implementation: a realization of the API specification that makes the API functional.
- API proxy: an intermediary between client applications and the backend that applies policies.
- API client (consumer): the application that calls the API.
- API invocation: one call a client makes to the API (Exam convention: the glossary does not define it separately).
Key facts
API implementation
- Detail
- A realization of the API specification that makes the API functional
API specification
- Detail
- A contract that people and software can read
API instance
- Detail
- Instantiation of the implementation; several per API across environments and gateways
API proxy former name
- Detail
- API Gateway
Proxy backend
- Detail
- Any location or language, including non-Mule
Failed policy at the proxy
- Detail
- Error response; the request does not reach the backend
Strict validation
- Detail
- Accepts only requests, parameters and headers defined in the specification
Who holds client ID and secret
- Detail
- The registered client application with an approved contract
- When does MuleSoft suggest a proxy even though you already have a Mule application?
- Why can one API have several API instances?
- What does "API" mean in API Designer, according to the glossary?
- When does a request through the proxy never reach the backend?
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