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API Gateway

A management tool that sits between a client and a collection of backend services.

Detailed Explanation

API Gateways handle routing, rate limiting, authentication, and traffic management, acting as the single entry point for microservices.

Why It Matters

Centralizes security and traffic control, preventing backend services from being overwhelmed directly.

Common Failure Mode

Gateway timeouts occurring because the backend response took slightly longer than the gateway's strict deadline.

Practical Example

An API gateway rejecting legitimate traffic because a newly deployed endpoint wasn't registered in the routing rules.

Production Manifestation

Kong, AWS API Gateway, or NGINX configurations routing external traffic to internal clusters.

Frequently Asked Questions

What is API Gateway in short?

A management tool that sits between a client and a collection of backend services.

What is the most common failure mode?

Gateway timeouts occurring because the backend response took slightly longer than the gateway's strict deadline.

AI Summary

A management tool that sits between a client and a collection of backend services. Centralizes security and traffic control, preventing backend services from being overwhelmed directly.