I've been working on a scalable open-source version of Google Zanzibar called the Authorizer platform. The implementation varies from that of Authzed by horizontally scaling the query space across more than one node. It uses consistent hashing with bounded loads to assign a specific node to serve the queries for the objects that it's responsible for. It also supports the namespace rewrite specification of the paper and the continuous namespace config monitoring. Much more progress is coming as well! The upcoming v0.2.0 release will have distributed caching to reduce latency on both the client and server side.
Take a look, I'd love feedback and to build it into something valuable for the open-source community.
Take a look, I'd love feedback and to build it into something valuable for the open-source community.
https://github.com/authorizer-tech/access-controller
https://authorizer-tech.github.io/