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🔧 Spring Cloud Gateway

Spring Cloud Gateway

A simple, yet effective way to route to APIs.

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Overview

Spring Cloud Gateway is a project from the Spring ecosystem that provides a library for building an API gateway on top of Spring Boot. It is built on reactive programming principles (Project Reactor) and is designed to be highly performant and non-blocking. It offers a flexible way to route requests based on various criteria and apply cross-cutting concerns like security, monitoring, and resiliency.

✨ Key Features

  • Built on Spring Framework 5, Project Reactor, and Spring Boot 2
  • Reactive, non-blocking architecture
  • Predicate-based routing
  • GatewayFilter factories for modifying requests and responses
  • Integration with Spring Cloud Discovery (Eureka, Consul)
  • Rate limiting and circuit breaker patterns

🎯 Key Differentiators

  • Deep integration with the Spring ecosystem
  • Reactive and non-blocking foundation for high performance
  • Flexibility of being a library rather than a standalone product

Unique Value: Provides a seamless and powerful way for Spring developers to build a custom, high-performance API gateway that is perfectly integrated with their microservices ecosystem.

🎯 Use Cases (4)

API Gateway for Spring-based microservices Backend for Frontend (BFF) Dynamic routing in a microservices architecture Implementing cross-cutting concerns

✅ Best For

  • Serving as the primary entry point for a backend system built entirely with Spring Boot microservices.
  • Implementing authentication and rate limiting for a set of internal APIs.

💡 Check With Vendor

Verify these considerations match your specific requirements:

  • Non-Java or non-Spring environments.
  • Teams looking for a pre-packaged, configurable tool rather than a library to build upon.

🏆 Alternatives

Netflix Zuul Other API Gateway products (Kong, Tyk, etc.)

Offers a much tighter and more natural integration for Spring developers compared to language-agnostic gateways, but requires development effort to set up.

💻 Platforms

API

✅ Offline Mode Available

🔌 Integrations

Spring Cloud ecosystem (Service Discovery, Config) Resilience4J Micrometer (for metrics) Spring Security

🛟 Support Options

  • ✓ Email Support
  • ✓ Dedicated Support (VMware Spring Runtime tier)

💰 Pricing

Contact for pricing
Free Tier Available

Free tier: Fully open-source and free to use.

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