Azure Cosmos DB Blog

Built-in security for every configuration Azure Cosmos DB for MongoDB vCore is designed with security as a foundational principle. Regardless of how your cluster is configured—whether it’s a single-node deployment or a multi-shard architecture—your data is always encrypted at rest using the AES-256 cipher, one of the most trusted and widely adopted encryption standards. This The post Data encryption with customer-managed key (CMK) for Azure Cosmos DB for MongoDB vCore appeared first on Azure Cosmos DB Blog.

Azure Managed Instance for Apache Cassandra Upgrade to Cassandra v5.0 is now generally available, bringing a host of powerful new features and performance improvements to your cloud-native applications. This release marks a significant milestone for developers and data platform teams looking to modernize their distributed data infrastructure. Why Upgrade to Cassandra v5.0? Cassandra v5.0 introduces The post Azure Managed Instance for Apache Cassandra v5.0 Generally Available! appeared first on Azure Cosmos DB Blog.

Local large language models (LLMs) provide significant advantages for developers and organizations. Key benefits include enhanced data privacy, as sensitive information remains entirely within your own infrastructure, and offline functionality, enabling uninterrupted work even without internet access. While cloud-based LLM services are convenient, running models locally gives you full control over model behavior, performance tuning, The post Build a RAG application with LangChain and Local LLMs powered by Ollama appeared first on Azure Cosmos DB Blog.

Scalable AI in Action with Azure Cosmos DB – A Monthly Partner Showcase As AI continues to reshape industries, customers are seeking scalable, real-time solutions that integrate seamlessly with their existing data platforms. Azure Cosmos DB, with its global distribution, low latency, and multi-model support, is uniquely positioned to power intelligent applications at scale. To The post Scalable AI with Azure Cosmos DB – Video Series appeared first on Azure Cosmos DB Blog.

Multi-tenant applications face a fundamental challenge: how to efficiently store and query data for tenants of vastly different sizes? Consider the typical scenario where your platform serves both enterprise clients with hundreds of thousands of users, as well as small businesses with just a handful. With traditional database partitioning strategies you are likely to run The post Scaling multi-tenant Go applications: Choosing the right database partitioning approach appeared first on Azure Cosmos DB Blog.

Integration testing has always presented a fundamental challenge: how do you test your application against real dependencies without the complexity of managing external services? Traditional approaches often involve either mocking dependencies (which can miss integration issues) or maintaining separate test environments (which can be expensive and difficult to manage consistently). Hello Testcontainers! Testcontainers solves this problem The post Integration testing for Go applications using Testcontainers and containerized databases appeared first on Azure Cosmos DB Blog.

When building applications that interact with databases, developers frequently encounter scenarios where default SDK configurations don’t align with their specific operational requirements. They need to customize SDK behavior to address real-world challenges like network instability, performance bottlenecks, debugging complexity, monitoring requirements, and more. These factors become even more pronounced when working with a massively scalable, The post Build reliable Go applications: Configuring Azure Cosmos DB Go SDK for real-world scenarios appeared first on Azure Cosmos DB Blog.

We’re excited to unveil the open Public Preview of Cosmos DB in Microsoft Fabric, now available to all users! Since our initial announcement at Microsoft Build 2025, we’ve introduced an array of powerful new features to enhance your data workflows. With this release, you can seamlessly access and analyze your operational data across the Fabric The post Announcing Cosmos DB in Microsoft Fabric (Preview) with New Capabilities! appeared first on Azure Cosmos DB Blog.

The Go programming language is a great fit for building serverless applications. Go applications can be easily compiled to a single, statically linked binary, making deployment simple and reducing external dependencies. They start up quickly, which is ideal for serverless environments where functions are frequently invoked from a cold start. Go applications also tend to use The post Building Event-Driven Go applications with Azure Cosmos DB and Azure Functions appeared first on Azure Cosmos DB Blog.

Welcome to the latest roundup of key updates across the Azure Cosmos DB Java ecosystem! The largest external customers of Azure Cosmos DB API for NoSQL, running some of the biggest and most mission critical workloads in Azure, are primarily Java users! From powerful new AI integrations to improvements in the Java SDK, Spring Data, The post Latest NoSQL Java Ecosystem Updates: June 2024 – June 2025 appeared first on Azure Cosmos DB Blog.