Optimize for the Best Cost and Performance for Azure Cosmos DB NoSQL API
summary
Describes four preview features that change data layout and costs: hierarchical partitioning lets up to three partition levels (tenantId → sensorId → eventId) to avoid 20 GB logical-partition limits and target tenant queries; burst capacity lets each physical partition accumulate up to five minutes of idle RUs usable at up to 3,000 RUs/sec for occasional spikes; merge consolidates fragmented storage/throughput to reduce physical partitions; partition throughput redistribution shifts RU allocation away from a single hot tenant. Demo shows a query drop from ~12 RUs to ~4.65 RUs. Enable via PowerShell/CLI and https://cosmos.azure.com/try/
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