Couchbase

Couchbase is a NoSQL database that stores JSON documents and lets you query them with SQL++, a SQL dialect for JSON. The vendor sells it three ways: Capella, a managed service on AWS, Google Cloud and Azure; Couchbase Server, the same engine that you run on your own hardware or cloud account under a subscription; and Couchbase Mobile, an embedded database with sync for phones and edge devices.

One engine combines key-value access, queries, full-text and vector search, eventing and a built-in cache, so teams do not need to bolt a separate cache or search system onto the data store. Capella adds patching, backups, monitoring and an API, and recent additions target AI agents with managed memory and an MCP server. It suits teams building customer-facing apps that need fast reads, flexible schemas and mobile or offline sync.

• SQL++ over JSON. Queries use a SQL-like syntax on documents, with scopes and collections to organise data. Capella iQ turns plain English into SQL++ and suggests indexes, per the vendor. Primary and secondary indexes are documented as the way to keep queries quick.
• Search and vector search. Full-text, geo and vector search run on the same data. The pricing page mentions billion-scale vector search with flexible indexing, and the docs include guides for vector indexes and adding search to an application.
• Memory-first engine and Magma storage. The vendor says a built-in cache serves reads fast at peak load, and its Magma storage engine holds up to 16 TB per node and can serve 5 TB from 64 GB of RAM, so large datasets do not demand very large machines.
• Managed operations on Capella. Couchbase deploys, patches, upgrades, backs up and monitors clusters, with a Health Advisor to flag trouble. Everything in the console is also in a REST API and Terraform. Each Server release gets 36 months of patches and 6 months of notice before retirement.
• Pause and scale per service. Services such as data, query and search scale independently. Dev and test clusters can be paused on a schedule or through the API for up to 30 days, keeping data, indexes and settings at a lower off rate.
• Hybrid with XDCR. Cross data center replication links Capella and self-managed Couchbase Server for migrations, hybrid apps, or a copy in your own data centre. Code and SDKs carry over between managed and self-run deployments, the vendor says.
• Analytics and mobile sync. Capella Analytics, now sold as Operational Insights, reads from Capella, Kafka or CDC from Oracle and SQL Server and can be queried with SQL, Tableau or Power BI. App Services syncs data to Couchbase Lite apps that keep working offline.

• A retailer with a personalised storefront. Product, profile and session data live as JSON in one cluster, with search and key-value lookups for fast pages. The team starts on the free tier and moves to a three-node multi-zone cluster for production.
• A mobile app team that needs offline mode. Couchbase Lite stores data on the device and App Services syncs it with the server when the connection returns. The vendor lists peer-to-peer syncing and no data syncing fees for Couchbase Mobile.
• A group building AI agents on AWS. The AI Data Plane on Capella offers managed agent memory, an MCP server and vectorization through Amazon Bedrock models over a private connection, so agents work against live operational data in the same database.

The docs route begins at the Capella sign-up page, where you register with an email address, GitHub or Google and confirm a code sent by email. The vendor describes a forever free tier operational cluster with no time limit: one node of roughly 8 GB, sample data, SQL++ and search, and forum support.

From there you explore the sample data in the data tools or the Playground, import your own data, and create buckets, scopes and collections. Backups and XDCR are covered in separate guides. A paid cluster is created from the same console once you choose a cloud, region, node size and services. Self-managed Server is a separate download, and Couchbase Lite is added to a mobile project through its SDK.

Couchbase queries JSON documents in SQL++, and the Capella cloud service bills per node per hour across Basic, Developer Pro and Enterprise. The free cluster is one node with 8 GB and forum support only, while Enterprise needs at least three nodes. Self-managed Server and Mobile are quoted instead of listed, and Couchbase, Inc. gives a San Jose address.

In our database management systems ranking Couchbase stands at #8 of 22: Apache Cassandra sits directly above it and MySQL directly below. After the challenger places, Couchbase is one of the established names, ranked in order and without a score.

Counting headquarters, 15 out of 22 sit in North America; for Couchbase that is the United States.

Credits cover data, query and search services.

Couchbase Mobile adds embedded offline-first storage with sync.

In the catalogue: Free Capella cluster; paid Capella tiers per node-hour, published; Server on request.

Capella is billed per node per hour, with prices rising with vCPU and RAM. Printed starting rates: Free at no charge for a 1-node cluster; Basic from $0.15 per hour per node; Developer Pro from $0.35; Enterprise from $0.49, with a 3-node minimum. An example row on AWS N. Virginia shows a 3-node cluster of 4 vCPU and 16 GB nodes at $0.98 per hour on Basic. Backups cost $0.07 per GB per month there, and the vendor says data transfer is usually under 10% of the bill. Couchbase Enterprise (Server) runs from $0.66 per hour per node via marketplaces, and Mobile pricing is on request. Credits can be prepaid.

Checked against couchbase.com for Best Database Management Systems in 2026, review date 7 November 2026.

The vendor states that TLS 1.2 or higher is always on, data at rest uses AES-256 with keys in FIPS 140-2 validated HSMs, and private networking is available through AWS PrivateLink, Azure Private Link, Google Cloud Private Service Connect or VPC peering.

Capella is said to be covered by SOC 2 Type II, ISO 27001, PCI DSS, HIPAA and CSA STAR Level 2. Enterprise adds auditing and customer-managed keys (KMIP). Customers pick cloud and region, with 85+ cloud regions listed.

Integrations the vendor names (12):

• AWS, Google Cloud and Azure
• Terraform
• Apache Kafka
• Oracle (CDC)
• SQL Server (CDC)
• Tableau
• Power BI
• Amazon Bedrock
• LangGraph
• CrewAI
• LlamaIndex
• Strands

Closest by traits, not by rank: 4 products from the same list that overlap most with Couchbase.

• Redis (#6 of 22): Memory-first data store used for caching, queues and sessions, now tri-licensed. Watch out: the free database is limited to 30 MB on a shared deployment with community support.
• Microsoft SQL Server (#10 of 22): Not for: teams that want to avoid counting cores and client licences. Windows and Linux database licensed per core, with free Express edition. (United States)
• Oracle Database (#11 of 22): Best for: Large organisations already tied to Oracle licensing, tooling and staff.
• ScyllaDB (#15 of 22): Best for: Teams with very high write throughput and key-based access.

Read from the vendor’s own pages on 5 November 2026.

• couchbase.com/pricing: Tiers, per-node hourly rates, credits, backup costs, pricing FAQ
• couchbase.com/products/capella: Capella features, security, compliance list, regions, AI Data Plane
• docs.couchbase.com/cloud/get-started/intro.html: Documentation start paths and free tier
• docs.couchbase.com/cloud/get-started/create-account.html: Sign-up steps and free tier operational cluster

Feature lists tell little, so positions rest on setup effort, the true price, portability and fit. Here that gives Couchbase the #8 position in a list of 22. Read the editorial process for the method and where paid visibility fits in.