Designing an Extensible User Identity and Benefits System: Xianyu App Case Study
The article presents a case study of Xianyu’s extensible user identity and benefits system, explaining how tiered identities grant differentiated product permissions and signal user influence, while detailing an authentication service with three extension points for condition judgment, validation, and audit handling, enabling flexible integration and unified state management.
This article discusses the design of an extensible user identity and benefits system, using the Xianyu app as a case study. It outlines how user identity tiers provide differentiated product permissions and serve as key markers of user influence and quality.
The authentication service defines a standardized process with three extension points: access condition judgment and form rendering, form validation and audit data generation, and audit result handling. By implementing these interfaces, new authentication flows can be integrated while maintaining unified state management (unverified, under review, rejected, approved).
The conclusion emphasizes the importance of conceptual definition, module decomposition, and technical implementation for building a flexible identity rights system that can accommodate various authentication channels.
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