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IBM Cloudant

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by IBM · since 2010 · also known as Cloudant

IBM's managed, CouchDB-compatible JSON database with built-in search and geospatial queries.

documentsearch enginespatialmanaged serviceproprietarymature
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Overview

IBM Cloudant is a fully managed JSON document database on IBM Cloud, built on Apache CouchDB and API-compatible with it, including the replication protocol. Cloudant contributed much of CouchDB's clustering code before IBM acquired the company in 2014. On top of CouchDB it offers provisioned throughput capacity, Lucene-based full-text search, geospatial indexing, IAM integration and BYOK encryption via Key Protect, with replication across availability zones. It makes most sense for IBM Cloud shops and for apps that want CouchDB-style sync to PouchDB or on-prem CouchDB without running the cluster.

Transactional apps (OLTP)Mobile & offlineFull-text searchGeospatialIoT & telemetry

Strengths & trade-offs

Strengths

  • +CouchDB replication means you can sync to PouchDB, CouchDB or another Cloudant
  • +Full-text and geospatial search built in, no separate search cluster
  • +Provisioned throughput gives predictable performance and cost
  • +IAM and Key Protect (BYOK) integration for regulated workloads

Trade-offs

  • −Tied to IBM Cloud, which has a smaller ecosystem than AWS, Azure or GCP
  • −Inherits CouchDB's lack of multi-document transactions
  • −Throughput limits return 429s that apps must back off from
  • −Fewer SDKs than in the past; older community libraries are deprecated

Great for

  • +Mobile apps syncing via PouchDB
  • +IoT data ingestion on IBM Cloud
  • +Hybrid setups replicating between on-prem CouchDB and the cloud

Think twice for

  • −Workloads needing ACID transactions across documents
  • −Teams standardised on another hyperscaler

Capabilities

Native or official first-party support · 12 of 25 tracked

✓Secondary indexes
✓Full-text search
✓Geospatial
✓JSON
✓Change data capture
✓Materialized views
✓Durable persistence
✓Compression
✓Encryption at rest
✓Role-based access
✓Online schema changes
✓Offline sync
–Transactions
–Joins
–Vector search
–Triggers
–Stored procedures
–TTL / expiry
–Pub/Sub
–Columnar storage
–In-memory
–Time travel
–Branching
–Streaming ingest
–Runs in WebAssembly

Scale & consistency

Comfortable data size
Large · ≤ 1 PB
Horizontal scaling
Native
Multi-region
Active active
Transactions
Limited ACID
Consistency
Eventual
Schema
Schemaless
Architecture
Distributed, Multi primary
Query languages
Cloudant Query (Mango), JavaScript MapReduce views, Lucene search

Data is spread across availability zones; cross-region setups use CouchDB replication between instances.

Deployment

Self-hosted Vendor-managed cloud Serverless Embedded Edge Kubernetes operator

available on · IBM Cloud

IBM CloudantIBM Cloud

Ecosystem

compatible withCouchDB
apis & protocolsHTTP/JSON REST, CouchDB replication protocol
client languagesJava, JavaScript, Python, Go

Alternatives to IBM Cloudant

Compare all→
Apache CouchDBDocument43.6

HTTP/JSON document database built around multi-master replication and offline-first sync.

ibm-cloudant vs apache-couchdb →
PouchDBDocument23.2

JavaScript database for browsers and Node that speaks the CouchDB replication protocol.

ibm-cloudant vs pouchdb →
Google Cloud FirestoreDocument49.1

Serverless document database with realtime listeners, offline SDKs and a new Enterprise edition.

ibm-cloudant vs google-cloud-firestore →
Azure Cosmos DBDocument45.3

Microsoft's globally distributed, multi-API NoSQL and vector database with SLA-backed latency.

ibm-cloudant vs azure-cosmos-db →
MongoDB AtlasDocument15.6

MongoDB's own multi-cloud DBaaS, bundling search, vector search and stream processing.

ibm-cloudant vs mongodb-atlas →
MongoDBDocument80.5

The default document database: flexible BSON documents, rich queries and built-in sharding.

ibm-cloudant vs mongodb →

IBM Cloudant FAQ

What is IBM Cloudant?

IBM Cloudant is a document database by IBM, first released in 2010. IBM Cloudant is a fully managed JSON document database on IBM Cloud, built on Apache CouchDB and API-compatible with it, including the replication protocol. Cloudant contributed much of CouchDB's clustering code before IBM acquired the company in 2014. On top of CouchDB it offers provisioned throughput capacity, Lucene-based full-text search, geospatial indexing, IAM integration and BYOK encryption via Key Protect, with replication across availability zones. It makes most sense for IBM Cloud shops and for apps that want CouchDB-style sync to PouchDB or on-prem CouchDB without running the cluster.

Is IBM Cloudant open source?

No. IBM Cloudant is proprietary, closed-source software.

Does IBM Cloudant support ACID transactions?

Partly. IBM Cloudant offers limited ACID guarantees (for example, single-record or single-partition transactions), with eventual consistency.

Does IBM Cloudant scale horizontally?

IBM Cloudant scales horizontally out of the box, with built-in sharding or partitioning. It is comfortable at large scale (≤ 1 PB). It supports active-active multi-region writes.

How can I run IBM Cloudant?

You can use the vendor's managed cloud. It is available on IBM Cloud.

What is IBM Cloudant best for?

IBM Cloudant is a strong fit for mobile apps syncing via PouchDB; IoT data ingestion on IBM Cloud; and hybrid setups replicating between on-prem CouchDB and the cloud. Think twice for workloads needing ACID transactions across documents.

What are the best alternatives to IBM Cloudant?

Common alternatives to IBM Cloudant include Apache CouchDB, PouchDB, Google Cloud Firestore, Azure Cosmos DB and MongoDB Atlas. The right choice depends on your workload, scale and hosting; WhichDB's smart match ranks them against your requirements.

How popular is IBM Cloudant?

IBM Cloudant ranks #77 of 844 databases on the WhichDB Score (31.6/100), and #7 among document databases. The score combines public adoption signals such as package downloads, GitHub activity, job posts and developer discussion.