The Nest team chose Cloud Spanner as the database for powering millions of Nest cameras. They considered factors like minimal downtime, lower total cost of ownership, and better end user experience. Spanner met their scalability, performance, relational database, reliability, and language support requirements. The migration to Spanner was carefully planned, considering SQL dialect, latency spikes, and Spanner-only concepts. After Spanner was in production, they monitored usage metrics and resized instances for optimal performance.
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