Azure Cosmos DB for .NET Articles, Tutorials & News
Azure Cosmos DB for .NET articles, tutorials, and news from the DotNetNews archive.
36 articles Updated
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Editor picks for Cosmos DB
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The Cosmos DB Query That Burned 2 Million RUs Before Lunch
medium.com Issue #504
Painful and believable. RU waste stories tend to stick because they show how tiny query choices become production incidents.
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See our new Azure Cosmos DB Design Patterns
devblogs.microsoft.com Issue #495
Strong reference material for Cosmos teams that need proven modeling approaches instead of learning partitioning lessons the hard way.
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Need a different partition key in Azure Cosmos DB? Pick the right approach
devblogs.microsoft.com Issue #495
Worth bookmarking if a bad Cosmos partition key is already hurting you and an in-place change is off the table.
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Cosmos DB Shell unlock agentic workflows with MCP toolkit
wondertalik.medium.com Issue #493
Interesting crossover of Cosmos DB tooling and MCP-style agent workflows; worth a look if you're experimenting with AI-assisted data access.
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Local Aspire Development with Azure Cosmos DB and the Preview Emulator | BEN ABT
medium.com Issue #488
Local Cosmos DB plus Aspire is exactly the kind of developer-loop improvement I want more of.
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What were the limitations of early tools like Script#?
youtube.com Issue #464
The title and summary don’t match cleanly, but vector database comparisons are still timely for .NET teams evaluating RAG infrastructure.
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Why I Like Azure Cosmos DB So Much
cosmin-vladutu.medium.com Issue #459
A personal perspective piece, but it still surfaces why Cosmos DB clicks for certain workloads and developer experience preferences.
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VS Code Live - The Modern Software Product Organization
youtube.com Issue #389
EF Core lessons that save time once your app grows up.
Azure Cosmos DB .NET from the DotNetNews archive, curated for .NET developers who already ship production code. This is a reading list pulled from daily issues, not a substitute for the official docs on Azure Cosmos DB for .NET.
Use Start here for the editorial shortlist, then browse Latest or the full archive when you need more depth. Coverage leans toward Azure Cosmos DB .NET, Cosmos DB C#, NoSQL Azure .NET. Recent pieces worth opening: “The Cosmos DB Query That Burned 2 Million RUs Before Lunch” and “See our new Azure Cosmos DB Design Patterns”.
Latest
Newest Cosmos DB from the archive
- See our new Azure Cosmos DB Design Patterns
devblogs.microsoft.com Issue #495
- Need a different partition key in Azure Cosmos DB? Pick the right approach
devblogs.microsoft.com Issue #495
- Cosmos DB Shell unlock agentic workflows with MCP toolkit
wondertalik.medium.com Issue #493
- Why I Like Azure Cosmos DB So Much
cosmin-vladutu.medium.com Issue #459
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Welcome to Azure Cosmos DB Conf 2026devblogs.microsoft.com Issue #449
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7 tips to optimize Azure Cosmos DB costs for AI and agentic workloadsdevblogs.microsoft.com Issue #444
Archive
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Newest first
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The Cosmos DB Query That Burned 2 Million RUs Before Lunch
medium.com Issue #504
One missing word in a WHERE clause. A dashboard that refreshed every 30 seconds. A throttling storm that made the whole app feel broken —…
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See our new Azure Cosmos DB Design Patterns
devblogs.microsoft.com Issue #495
Design patterns are where good data modeling lives or dies. In a NoSQL database like Azure Cosmos DB, the difference between a schema that scales to millions of operations per second and one that figh...
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Need a different partition key in Azure Cosmos DB? Pick the right approach
devblogs.microsoft.com Issue #495
Once you create a container, its partition key is fixed at creation, and you can’t change it in place. However, if your original key starts causing problems like cr
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Cosmos DB Shell unlock agentic workflows with MCP toolkit
wondertalik.medium.com Issue #493
Azure Cosmos DB Shell — open-source command-line interface With integrated Model Context Protocol (MCP) server support.
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Local Aspire Development with Azure Cosmos DB and the Preview Emulator | BEN ABT
medium.com Issue #488
Distributed applications tend to feel straightforward until a real cloud dependency enters the picture. Azure Cosmos DB is a good example…
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What were the limitations of early tools like Script#?
youtube.com Issue #464
Vector Databases for .NET Compared: Azure AI Search, Qdrant, Cosmos DB & pgvector
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Welcome to Azure Cosmos DB Conf 2026
devblogs.microsoft.com Issue #449
Today is the day. Azure Cosmos DB Conf 2026, in partnership with AMD, is a free virtual developer event focused on building modern, scalable applications with Azure Cosmos DB. The
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7 tips to optimize Azure Cosmos DB costs for AI and agentic workloads
devblogs.microsoft.com Issue #444
AI apps and agentic workloads expose inefficiencies in your data layer faster than any previous generation of apps. You’re storing embeddings, serving low-latency retrieval, handling bursty traffic fr...
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VS Code Live - The Modern Software Product Organization
youtube.com Issue #389
Azure Cosmos DB Data Explorer now supports Dark Mode
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How to Enable Microsoft Entra ID for Azure Cosmos DB (NoSQL)
devblogs.microsoft.com Issue #387
Strengthen Identity Security and Eliminate Account Keys Identity is becoming the new security perimeter. As organizations modernize their cloud applications, long‑lived secrets and shared keys introdu...
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Accelerate Your Cosmos DB Infrastructure with GitHub Copilot CLI and Azure Cosmos DB Agent Kit
devblogs.microsoft.com Issue #386
Modern infrastructure work is increasingly agent driven, but only if your AI actually understands the platform you’re deploying. This guide shows how to turn GitHub Copilot CLI into an Azure Cosmos DB...
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Building Intelligent Search with Azure Cosmos DB: Full-Text, Vector, and Hybrid Search
medium.com Issue #382
Modern applications demand smarter search capabilities. Users expect to find what they’re looking for even when they don’t use exact…
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Implementing Distributed Caching in Web API with Azure Managed Redis
medium.com Issue #381
I’ve worked with caching before — storing AI chat request/response pairs in Cosmos DB to avoid redundant model calls, and caching API…
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Introducing the Azure Cosmos DB Agent Kit: Your AI Pair Programmer Just Got Smarter
devblogs.microsoft.com Issue #380
The Azure Cosmos DB Agent Kit is an open-source collection of skills that teaches your AI coding assistant (GitHub Copilot, Claude Code, Gemini CLI) expert-level Azure Cosmos DB best practices. Instal...
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Azure Cosmos DB : Becoming a Search-Native Database
devblogs.microsoft.com Issue #350
For years, “Database” and “Search systems" (think Elastic Search) lived in separate worlds. While both Databases and Search Systems operate in the same domain (storing, indexing and querying data...
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What’s New in Semantic Search for Azure Cosmos DB at Ignite 2025
devblogs.microsoft.com Issue #333
We’re excited to introduce new capabilities and performance improvements for vector and full-text search in Azure Cosmos DB. These updates make it easier for developers and architects to build semanti...
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Clean Architecture with a Document DB, Minimal APIs, and CQRS in .NET 9 (Copy-Paste Starter Kit)
medium.com Issue #313
If you want the full source code, join our community: Here
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Bringing Context to Copilot: Azure Cosmos DB Best Practices, Right in Your VS Code Workspace
devblogs.microsoft.com Issue #313
Developers love GitHub Copilot for its instant, intelligent code suggestions. But what if those suggestions could also reflect your specific database and workload patterns? That’s now possible with a ...
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Using CosmosDB in .NET for Scalable NoSQL Applications
medium.com Issue #273
Building High-Performance, Globally Distributed NoSQL Apps with Azure Cosmos DB and .NET Core Continue reading on Simform Engineering »
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Announcing Cosmos DB in Microsoft Fabric (Preview) with New Capabilities!
devblogs.microsoft.com Issue #244
https://devblogs.microsoft.com/cosmosdb/announcing-cosmos-db-in-microsoft-fabric-preview-with-new-capabilities
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New Generally Available and Preview Search Capabilities in Azure Cosmos DB for NoSQL
devblogs.microsoft.com Issue #205
https://devblogs.microsoft.com/cosmosdb/new-generally-available-and-preview-search-capabilities-in-azure-cosmos-db-for-nosql
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Meet the DocumentDB Extension for VS Code and DocumentDB Local — A Fast, Friendly Way to Work with DocumentDB, Locally and Beyond
devblogs.microsoft.com Issue #204
https://devblogs.microsoft.com/cosmosdb/meet-the-documentdb-extension-for-vs-code-and-documentdb-local-a-fast-friendly-way-to-work-with-documentdb-locally-and-beyond/
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Storing Event Streams in a Database Using Cosmos DB with C#
c-sharpcorner.com Issue #191
https://www.c-sharpcorner.com/article/storing-event-streams-in-a-database-using-cosmos-db-with-c-sharp/
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Enable continuous backup for multi-region write account
devblogs.microsoft.com Issue #165
https://devblogs.microsoft.com/cosmosdb/enable-continuous-backup-for-multi-region-write-account/