Google researchers presented a paper on Google's consistent global authorization system known as Zanzibar. The paper focuses on the design, implementation, and deployment of Zanzibar for storing and evaluating access control lists (ACL). Zanzibar offers a uniform data model and configuration language for providing a wide range of access control policies from hundreds of client services at Google. The client services include Cloud, Drive, Calendar, Maps, YouTube and Photos.
Zanizibar authorization decisions respect causal ordering of user actions and thus provide external consistency amid changes to access control lists and object contents. It scales to trillions of access control lists and millions of authorization requests per second to support services used by billions of people. It has maintained 95th-percentile latency of less than 10 milliseconds and availability of greater than 99.999% over 3 years of production use.
Read full article from Google researchers present Zanzibar, a global authorization system, it scales trillions of access control lists and millions of authorization requests per second | Packt Hub
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