Multi-tenancy OAuth with Spring Security 5.2

A very typical OAuth deployment includes an Authorization Server and a set of applications and APIs that trust authorities issued by that Authorization Server.

But what about APIs and applications that serve more than one tenant? Can a single API or application trust multiple Authorization Servers? What about making those decisions programmatically at runtime or via a database? Multi-tenant deployments bring their own set of challenges, especially when you have thousands of tenants of varying shapes and sizes.

This talk will introduce AuthenticationManagerResolver, a simple interface from Spring Security that packs a lot of punch due to its strategic placement in the filter chain. We’ll also review Spring Security’s ClientRegistrationRepository and where it comes into play. We’ll begin with a very typical OAuth application and then explore a few different deployment models, expanding it throughout the talk into a secure, yet dynamic, database-driven, multi-tenant deployment.

Speaker: Josh Cummings; Software Engineer, Pivotal
Filmed at SpringOne Platform 2019
Slides: https://www.slideshare.net/SpringCentral/multitenancy-oauth-with-spring-security-52

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