MongoDB Blog
Announcements, updates, news, and more
The Intelligent Data Platform for the AI Era
September 29, 2026
Artificial Intelligence
Introducing MongoDB Atlas Sharding Advisor: Know When and How to Scale Sharded Clusters
As applications grow, database teams need to make increasingly complex decisions about how to distribute data, manage workloads, and scale their infrastructure. Sharding enables MongoDB to scale horizontally, but managing a sharded cluster can introduce its own challenges. Understanding cluster health, diagnosing uneven load, and choosing an appropriate shard key can require piecing together metrics across multiple views and relying on specialized expertise.
Introducing the MongoDB Claude SDK Session Adapter: Durable Session Storage for Agents
The Claude Agent SDK is a package that lets you embed Claude Code's own agent loop directly into your application: web search, file search, file editing, MCP server connections, and more, all without having to define those tools or manage the agent loop yourself. The SDK also automatically persists session transcripts to the local file system by default. Claude calls it the Agent SessionStore.
Introducing MongoDB Agents: Open Source Agent Templates for Atlas Agent Engine
Teams increasingly want agents that handle routine database work: checking cluster alerts, reviewing slow queries, and answering questions about a schema. But building agents takes much more than a prompt. It requires credential handling, access scoping, tool orchestration, approval flows, a chat integration, evaluation, observability, and ongoing testing and maintenance. That plumbing is easy to underestimate, and it's where much of the effort goes.
MongoDB Extension for Hibernate ORM is Now GA
The MongoDB Extension for Hibernate ORM is now generally available, giving Java teams a production-ready way to use familiar Hibernate APIs with MongoDB’s document model. It is a first-party, open-source library that enables Java applications to use MongoDB as the backing database via the Hibernate ORM. The extension allows Java developers to enjoy the same experience with MongoDB, reducing the friction for those who want to switch.
Intelligent Workload Management: Keeping Your Clusters Available When It Matters
Modern applications need to stay available even when traffic spikes suddenly or queries consume disproportionate resources. MongoDB Atlas is designed for high availability, but availability in practice is about more than surviving host failures or a replica set election. It’s also about how a cluster behaves when demand exceeds what it can safely process.
MongoDB 9.0's Observability Capabilities: Less Hunting, More Resolving
Modern applications generate telemetry across every layer of the stack, but understanding what changed and why often remains difficult. Database signals frequently live in separate workflows, forcing teams to switch between dashboards, correlate disconnected data, and piece together performance issues without the full operational context.
MongoDB Queryable Encryption: Prefix, Suffix, and Substring Queries Are Now GA
Last week, we announced the general availability of prefix, suffix, and substring query support in MongoDB Queryable Encryption. These capabilities extend Queryable Encryption beyond equality and range queries, and they’re now fully supported for production workloads.