vs

bbolt vs redb

bbolt: etcd's maintained fork of BoltDB: a simple, pure-Go B+tree store in a single file. redb: Pure-Rust embedded key-value store: copy-on-write B-trees, ACID, and a stable file format.

key differences

  • These two are very similar on paper. Compare ecosystems, pricing and team familiarity.

choose bbolt for

  • +Embedded metadata stores in Go services
  • +Raft log and snapshot storage
  • +Local state for CLIs and agents

best at · Embedded, Metadata, Coordination

choose redb for

  • +Local persistence for Rust desktop and CLI apps
  • +Embedded metadata and index storage in Rust services
  • +Replacing sled or LMDB bindings in Rust code

best at · Embedded, Local-first, Metadata

overview
Primary model
Key-Value
Key-Value
Also supports
–
–
Type
Embedded library
Embedded library
Status
Active
Active
Developer
etcd maintainers / CNCF
Christopher Berner
First release
2017
2021
Latest version
1.5.0 (Jun 21, 2026)
4.4.0 (Oct 13, 2026)
License
Open source (permissive)MIT License
Open source (permissive)MIT or Apache License 2.0
Free tier
✓
✓
popularity
WhichDB Score
11.5
13.8
Rank
#282
#245
GitHub stars
9.8K
4.9K
Stack Overflow questions
41
–
scale & guarantees
Comfortable data size
Small (≤ 100 GB)
Small (≤ 100 GB)
Horizontal scaling
None
None
Multi-region
None
None
ACID
Full
Full
Consistency
Strong
Strong
Schema
Schemaless
Strict
Architecture
Embedded
Embedded
deployment
Self-hosted
✓
✓
Vendor-managed cloud
—
—
Serverless
—
—
Embedded
✓
✓
Edge
—
—
Clouds
–
–
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
Go API
Rust API
Client languages
Go
Rust, Python
Best for
Embedded, Metadata, Coordination
Embedded, Local-first, Metadata

bbolt vs redb: FAQ

What is the difference between bbolt and redb?

bbolt: etcd's maintained fork of BoltDB: a simple, pure-Go B+tree store in a single file. redb: Pure-Rust embedded key-value store: copy-on-write B-trees, ACID, and a stable file format.

When should I choose bbolt over redb?

Choose bbolt for embedded metadata stores in Go services; raft log and snapshot storage; and local state for CLIs and agents. Choose redb for local persistence for Rust desktop and CLI apps; embedded metadata and index storage in Rust services; and replacing sled or LMDB bindings in Rust code.

Is bbolt or redb more popular?

redb ranks #245 on the WhichDB Score (13.8/100) and bbolt ranks #282 (11.5/100). Popularity is not fit: check the requirements that matter for your project.

Are bbolt and redb open source?

Yes. bbolt is open source. License: MIT License. Yes. redb is open source. License: MIT or Apache License 2.0.