Can I use only a reverse proxy and skip a load balancer?

For small systems, yes — if your proxy setup already handles upstream balancing and health checks. At larger scale you usually formalize both concerns separately.

Does every microservice architecture require an API gateway?

Not always on day one. But as service count, clients, and auth/rate-limit complexity grow, a gateway becomes increasingly valuable.

Which should I choose first?

Start from your bottleneck: a scale/availability issue points to a load balancer, an edge security/SSL/caching issue to a reverse proxy, and multi-service API complexity to an API gateway.

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Decoding System Design: Load Balancer vs. Reverse Proxy vs. API Gateway

Understand when to use a load balancer, reverse proxy, or API gateway in modern architectures. A practical breakdown with examples and decision rules.

system design

architecture

load balancer

reverse proxy

api gateway

microservices

web development

January 23, 2026

Kazi Efazul Karim

5 min

Decoding System Design: Load Balancer vs. Reverse Proxy vs. API Gateway

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Decoding System Design: Load Balancer vs. Reverse Proxy vs. API Gateway

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