Prompt Api Gateway

# Prompt — API Gateway for microservices

> [🇷🇺 Русский](../ru/prompt-api-gateway.md) · 🇬🇧 **English**

[← Index](./README.md) · [Standards](./standards.md) · [Template](./template.md)

tags: #prompt #api-gateway #microservice #security #devops #single-shot
**Status:** `🟢 Ready`
**Owner:** Pandamy619
**Last edit:** 2026-05-20
**Version:** v1
**Source idea:** [LogicBalls — API Gateway Architecture Configurator](https://logicballs.com/ai-prompt/prompts/api-gateway-configurator)
**Delta from original:** added explicit edge-concerns / domain-concerns split, requirement to compare gateway options, and the canonical "behavior when context is missing" block.

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## When to use

- When you need to design a gateway for a set of backend services
- When auth, rate limits, routing, and observability must be considered up front
- When the team is choosing between Kong, NGINX, Traefik, Envoy, or a managed gateway

## What to substitute

- `{{gateway_type}}` — enum: `kong | nginx | traefik | envoy | aws_api_gateway | apisix | other`
- `{{infrastructure_context}}` — string, e.g. `EKS in AWS, ALB in front of the gateway`
- `{{traffic_patterns}}` — string, e.g. `~500 RPS, bursts 2k RPS, 70% reads`
- `{{security_requirements}}` — string, e.g. `OAuth2 + mTLS for service-to-service; PCI scope`
- `{{backend_services}}` — list, e.g. `payments-api; user-api; notifications-api`
- `{{special_requirements}}` — string, e.g. `canary routing 5%; WebSocket for /ws`

## Definition of done

Universal minimum — see [Definition of done](./standards.md#2-definition-of-done).

Specific criteria:

- Explicitly stated which policies live on the gateway and which inside the services
- If multiple gateway options are viable — a short comparison is provided
- The configuration or IaC fragments are shown in full, not "example config for one route"
- The observability section covers access logs, metrics, and tracing headers — all three

## Prompt