vs

MongoDB vs WiredTiger

MongoDB: The default document database: flexible BSON documents, rich queries and built-in sharding. WiredTiger: MongoDB's default storage engine: MVCC B-tree with compression and snapshot isolation.

key differences

  • MongoDB is primarily a document database; WiredTiger is key-value.
  • Licensing: MongoDB is source-available (Server Side Public License v1 (Community); commercial (Enterprise)); WiredTiger is open source (copyleft) (GNU GPL v2 or v3, or MongoDB commercial license).
  • MongoDB is built for larger datasets (≤ 1 PB) than WiredTiger (≤ 10 TB).
  • Horizontal scaling is native in MongoDB and none in WiredTiger.
  • Only MongoDB has joins, secondary indexes, full-text search, vector search, geospatial.
  • Only WiredTiger has columnar storage, time travel.
  • WiredTiger can run embedded in your application process.

choose mongodb for

  • +Product catalogs with highly variable attributes
  • +Content management and user-generated content
  • +Mobile and web backends that evolve their schema weekly
  • +IoT and event data with time-series collections

best at · OLTP, Content, Metadata

choose wiredtiger for

  • +Storage engine inside MongoDB
  • +Embedding a transactional engine in a custom C system
  • +Research on MVCC B-tree storage

best at · Embedded, OLTP

overview
Primary model
Document
Key-Value
Also supports
Search Engine, Vector, Time-Series, Spatial
Columnar / OLAP
Type
Database engine
Embedded library
Status
Active
Active
Developer
MongoDB, Inc.
MongoDB Inc.
First release
2009
2010
Latest version
9.0.4 (Oct 14, 2026)
11.3.1 (Nov 15, 2024)
License
Source-availableServer Side Public License v1 (Community); commercial (Enterprise)
Open source (copyleft)GNU GPL v2 or v3, or MongoDB commercial license
Free tier
✓
✓
popularity
WhichDB Score
80.5
20.6
Rank
#4
#155
GitHub stars
28.7K
2.4K
Stack Overflow questions
175.2K
170
scale & guarantees
Comfortable data size
Large (≤ 1 PB)
Medium (≤ 10 TB)
Horizontal scaling
Native
None
Multi-region
Read replicas
None
ACID
Full
Full
Consistency
Tunable, Causal
Strong
Schema
Flexible
Schemaless
Architecture
Primary replica, Distributed, Client server
Embedded
deployment
Self-hosted
✓
✓
Vendor-managed cloud
✓
—
Serverless
—
—
Embedded
—
✓
Edge
—
—
Clouds
AWS, Google Cloud, Azure
–
capabilities
Transactions
✓
✓
Joins
✓
—
Secondary indexes
✓
—
Full-text search
✓
—
Vector search
✓
—
Geospatial
✓
—
JSON
✓
—
Change data capture
✓
—
Triggers
—
—
Stored procedures
—
—
Materialized views
✓
—
TTL / expiry
✓
—
Pub/Sub
—
—
Columnar storage
—
✓
In-memory
✓
—
Durable persistence
✓
✓
Compression
✓
✓
Encryption at rest
✓
✓
Role-based access
✓
—
Time travel
—
✓
Branching
—
—
Online schema changes
✓
—
Streaming ingest
—
—
Offline sync
—
—
Runs in WebAssembly
—
—
interfaces
Query languages
MongoDB Query API (MQL), Aggregation pipeline
C API
Client languages
C, C++, C#, Go, Java, Kotlin, JavaScript, PHP
C, Python, Java
Best for
OLTP, Content, Metadata, IoT
Embedded, OLTP

MongoDB vs WiredTiger: FAQ

What is the difference between MongoDB and WiredTiger?

MongoDB: The default document database: flexible BSON documents, rich queries and built-in sharding. WiredTiger: MongoDB's default storage engine: MVCC B-tree with compression and snapshot isolation. MongoDB is primarily a document database; WiredTiger is key-value. Licensing: MongoDB is source-available (Server Side Public License v1 (Community); commercial (Enterprise)); WiredTiger is open source (copyleft) (GNU GPL v2 or v3, or MongoDB commercial license). MongoDB is built for larger datasets (≤ 1 PB) than WiredTiger (≤ 10 TB).

When should I choose MongoDB over WiredTiger?

Choose MongoDB for product catalogs with highly variable attributes; content management and user-generated content; and mobile and web backends that evolve their schema weekly. Choose WiredTiger for storage engine inside MongoDB, embedding a transactional engine in a custom C system and research on MVCC B-tree storage.

Is MongoDB or WiredTiger more popular?

MongoDB ranks #4 on the WhichDB Score (80.5/100) and WiredTiger ranks #155 (20.6/100). Popularity is not fit: check the requirements that matter for your project.

Are MongoDB and WiredTiger open source?

Not in the OSI sense. MongoDB is source-available: you can read the code, but the license restricts some uses, typically offering it as a competing managed service. License: Server Side Public License v1 (Community); commercial (Enterprise). Yes. WiredTiger is open source. License: GNU GPL v2 or v3, or MongoDB commercial license.