Redb

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redb is an embedded key-value database written in pure Rust, offering a simple, portable, high-performance, and ACID-compliant solution for data storage. It is inspired by lmdb and stores data in copy-on-write B-trees.

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At a glance

Pricing

Open Source

Free tier

Yes

API

Yes

Skill level

Technical

About

What is redb?

redb is an embedded key-value database implemented entirely in Rust, providing a robust and efficient solution for local data persistence. It is designed for high performance, portability, and ACID compliance, ensuring data integrity and reliability. The database leverages copy-on-write B-trees for its storage mechanism, drawing inspiration from lmdb. Key features include zero-copy, thread-safe, BTreeMap-based API, MVCC support for concurrent readers and writers without blocking, and built-in crash safety. It also supports savepoints and rollbacks, offering flexible transaction management. redb aims to provide performance comparable to other leading embedded key-value stores like lmdb and RocksDB, making it a strong choice for Rust developers requiring a reliable and fast local database.

Best used for

Ideal for developers who need to embed a high-performance, ACID-compliant key-value store directly into their Rust applications, manage concurrent read/write operations efficiently, and ensure data integrity even in crash scenarios. Especially valuable for projects requiring a robust local data persistence solution.

Common actions

store data locally

manage database transactions

implement embedded database

ensure data integrity

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Capabilities

Key features

Embedded key-value database
Pure Rust implementation
ACID-compliant transactions
MVCC support
Crash-safe by default
Savepoints and rollbacks
Zero-copy BTreeMap API

Target Audience

developer

Integrations

Not yet documented

Pricing & Plans

Open Source

Free

FAQs

What are the performance characteristics of redb compared to other embedded databases?

redb aims for performance similar to other top embedded key-value stores like lmdb and RocksDB. Benchmarks show competitive results across various operations including bulk loads, individual and batch writes, random reads, and removals, often outperforming or matching alternatives in specific scenarios.

What kind of data storage mechanism does redb use?

redb stores data in a collection of copy-on-write B-trees. This design choice contributes to its performance, ACID compliance, and MVCC support, allowing for efficient and safe concurrent access to data.

Is redb suitable for concurrent applications?

Yes, redb is designed with MVCC (Multi-Version Concurrency Control) support, which allows for concurrent readers and a single writer without blocking. This makes it well-suited for applications that require high concurrency and responsiveness.

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