Atlas-DB vs Azure Cosmos DB: What are the differences?

Atlas-DB: Backend for managing dimensional time series data, by Netflix. Atlas was developed by Netflix to manage dimensional time series data for near real-time operational insight. Atlas features in-memory data storage, allowing it to gather and report very large numbers of metrics, very quickly; Azure Cosmos DB: A fully-managed, globally distributed NoSQL database service. Azure DocumentDB is a fully managed NoSQL database service built for fast and predictable performance, high availability, elastic scaling, global distribution, and ease of development.

Atlas-DB can be classified as a tool in the "Database Tools" category, while Azure Cosmos DB is grouped under "NoSQL Database as a Service".

Some of the features offered by Atlas-DB are:

• Manages dimensional time series data
• In-memory data storage
• Captures operational intelligence

On the other hand, Azure Cosmos DB provides the following key features:

• Fully managed with 99.99% Availability SLA
• Elastically and highly scalable (both throughput and storage)
• Predictable low latency: <10ms @ P99 reads and <15ms @ P99 fully-indexed writes

Atlas-DB is an open source tool with 2.4K GitHub stars and 204 GitHub forks. Here's a link to Atlas-DB's open source repository on GitHub.