error-model-validation-architect

What problem does it solve?

Design and implement consistent API validation and error-handling behavior for Kotlin plus Spring services. Use when defining error payloads, mapping framework and domain exceptions, standardizing HTTP status codes, adding @ControllerAdvice, preventing internal-detail leakage, or ensuring clients can rely on stable machine-readable error semantics across endpoints.

Core Features & Use Cases

• Establish a stable error taxonomy covering malformed input, not found, conflicts, authentication, authorization, and downstream failures.
• Map errors to explicit HTTP status codes and a machine-readable payload with a consistent contract.
• Provide a centralized error handling strategy using a ControllerAdvice and documented guidelines for developers.
• Use cases include API design-time contracts, auditing and observability of errors, and safe error responses for public endpoints.

Quick Start

Define and implement a stable, machine-readable API error contract for a Kotlin + Spring service, including error taxonomy, status mappings, and a ControllerAdvice-based handler.