ArangoDB vs Google Cloud Spanner

ArangoDB is an open-source multi-model database that combines document, graph, and key-value data models in a single engine. It uses AQL (ArangoDB Query Language) for querying across all data models and supports distributed deployments.

Cloud Spanner is Google's horizontally scalable relational database service that combines the benefits of traditional SQL databases with the scalability of NoSQL systems. It provides strong consistency and global distribution for mission-critical applications.