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Implementation-specific path type

As explained in Acing the Certified Kubernetes Administrator Exam, Second Edition

ImplementationSpecific is an Ingress path type whose matching behavior is determined by the Ingress class.

ImplementationSpecific is an Ingress path type whose controller or Ingress class decides whether matching behaves like an exact path or a prefix. Use it when matching semantics depend on the selected Ingress implementation. section 6.3

Compare the three supported Ingress path types:

  • Exact matches the complete path, case-sensitively. section 6.3
  • Prefix matches URL path elements separated by forward slashes. section 6.3
  • ImplementationSpecific delegates exact-versus-prefix behavior to the Ingress class. section 6.3

Ingress manifest

A manifest can route hello.com using ImplementationSpecific at the root path, while app.hello.com uses Exact matching and routes to another Service.

How Acing the Certified Kubernetes Administrator Exam, Second Edition covers it

How deep it goes
Defines delegated matching behavior and contrasts it with Exact and Prefix, without detailing controller-specific algorithms.
Examples
Uses hello.com with an ImplementationSpecific root route and app.hello.com with an Exact route in one Ingress manifest.
What it assumes
Assumes familiarity with Ingress rules, hosts, paths, and backend Services.
What you can do after
Operate/configure Ingress manifests with controller-dependent matching and route requests to backend Services.
How it connects
Connects Ingress classes with path matching, host rules, backend Services, and Exact and Prefix path types.
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