Microservices.io

Implementing authentication in a microservice architecture can be complex and error-prone. The API Gateway serves as a central point for handling authentication, delegating the process to an identity and access management service for enhanced security. OAuth 2.0 and OpenID Connect protocols are commonly used, with tokens like JWTs facilitating secure communication between client requests and backend services.

Authentication and authorization in a microservice architecture: Part 2 - Authentication

An introduction to authentication in a microservice architecture §

Delegating authentication to an identity and access management service §

Implementing authentication in the RealGuardIO application using OAuth 2.0 and OIDC §

Need help with accelerating software delivery? §

Great post!
Just to add, one key advantage of using an API Gateway for authentication in microservice architectures is centralized policy enforcement. It ensures consistent auth logic across services and reduces duplication. That said, it’s important not to overload the gateway with too much logic. Delegating token validation to downstream services (especially for service-to-service communication) can also be useful for granular control.
Also, when using JWTs, remember to handle token expiration and revocation carefully. Since JWTs are stateless, revoking access before expiry requires additional strategies like maintaining a denylist or using short-lived tokens with refresh tokens handled by a secure auth server.

Sorry, did not read the article still cuz’ I’m missing enough time (so maybe there is an explanation for this ?), but API Gateway !=BFF. You will have one and only one API Gateway , as you can have as many BFFs as you need (usually , as the name says, one for each front _WebApp, Mobile, etc _ UI App

Thanks for the content. The message seems clear enough. But the repository is not available to review the code.