🔒 Azure Cosmos DB ETag Concurrency Control

This sample notebook demonstrates how to implement optimistic concurrency using ETags in Azure Cosmos DB with Python.

🚀 Usage

1. 📘 Open etag_cosmos.ipynb in VS Code or Jupyter.
2. ▶️ Run cells sequentially to:
   • Connect to Cosmos DB
   • Read items and fetch their ETags
   • Upsert a test document
   • Perform conditional updates using the ETag
   • Demonstrate success and failure cases
   • Clean up test items

🔗 References

• Transactions and optimistic concurrency control
• C#: Handling Concurrency in CosmosDB with ETags
• C# Official Sample