Uploaded December 2025 | Updated September 2026, 2 weeks ago
The Azure Cosmos DB Linux-based vNext emulator (preview) is a local version of the Azure Cosmos DB service that runs as a Docker container on Linux, macOS, and Windows. It provides a cost-effective way to develop and test applications locally without requiring an Azure subscription or network connectivity.
The latest release brings improvements in two key areas:
1/ Enhanced Query engine: Addresses limitations in JOINs, operators, subdocument handling, and more.
2/ Observability: OpenTelemetry support to collect and correlate metrics, logs, and traces for deeper insight into applications.
Blog post: https://devblogs.microsoft.com/cosmosdb/azure-cosmos-db-vnext-emulator-query-and-observability-enha…
Emulator GitHub repo link: github.com/Azure/azure-cosmos-db-emulator-docker
The Azure Cosmos DB Linux-based vNext emulator (preview) is a local version of the Azure Cosmos DB service that runs as a Docker container on Linux, macOS, and Windows. It provides a cost-effective way to develop and test applications locally without requiring an Azure subscription or network connectivity.
The latest release brings improvements in two key areas:
1/ Enhanced Query engine: Addresses limitations in JOINs, operators, subdocument handling, and more.
2/ Observability: OpenTelemetry support to collect and correlate metrics, logs, and traces for deeper insight into applications.
Blog post: https://devblogs.microsoft.com/cosmosdb/azure-cosmos-db-vnext-emulator-query-and-observability-enha…
Emulator GitHub repo link: github.com/Azure/azure-cosmos-db-emulator-docker
