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Wuhan2020 is an open platform for collecting, validating, and visualizing epidemic relief data, originally focused on coordinating community response during the COVID-19 crisis. It aggregates information on hospitals, factories, logistics providers, hotels, and donations from multiple sources into a central repository, making it accessible through an interactive geographic map and a programmatic API. The platform distinguishes itself by using GitHub issues as its primary data store, with label-driven organization and command-based task assignment that allows volunteers to claim and track work

RavenDB is a multi-model NoSQL document database designed for high-performance, ACID-compliant data storage. It persists structured information as schema-flexible JSON documents and utilizes a unit-of-work session pattern to track entity changes and batch modifications into atomic transactions. The platform is built on a distributed architecture that supports horizontal scaling through sharding and ensures high availability via multi-node, master-to-master cluster replication. The database distinguishes itself through a self-optimizing query engine that automatically creates and maintains ind