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What Does API Gateway Do?

An API Gateway is a microservices architecture's central entry point for all client requests. Its primary role is managing and routing traffic between the client and back-end services, ensuring security, scalability, and efficiency.

Key functions include:

  • Request Routing: Directs client requests to the appropriate back-end services.
  • Security: Handles authentication, authorization, and rate limiting.
  • Load Balancing: Distributes traffic evenly across services to optimize performance.
  • Caching: Reduces the load on back-end services by storing frequent responses.

An API gateway enhances applications' performance and manageability by simplifying and securing communication between clients and services.