Dqlite

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dqlite is a Coding & Development tool that implements an embeddable, replicated, and fault-tolerant SQL engine. It extends SQLite with a network protocol for high availability and automatic failover.

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At a glance

Pricing

Open Source

Free tier

Yes

API

Yes

Skill level

Technical

About

What is dqlite?

dqlite is an open-source C library that provides an embeddable, replicated, and fault-tolerant SQL database engine. It builds upon SQLite by adding a network protocol, enabling multiple application instances to form a highly-available cluster without relying on external databases. Key design highlights include an asynchronous single-threaded implementation using libuv, a custom wire protocol optimized for SQLite data types, and data replication based on the Raft algorithm. dqlite is compatible with Linux kernels supporting native async I/O and offers a modified LGPLv3 license allowing static linking. It's ideal for developers seeking a robust, self-contained, and highly available SQL solution for their applications.

Best used for

Ideal for developers who need to integrate a highly available and fault-tolerant SQL database directly into their applications, replicate data across multiple instances, and ensure automatic failover. Especially valuable for building robust distributed systems without external database dependencies.

Common actions

embed SQL database

replicate SQL data

ensure high availability

implement fault tolerance

build distributed applications

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Capabilities

Key features

Embeddable SQL engine
Replicated database
Fault-tolerant
Automatic failover
Raft algorithm
Asynchronous single-threaded

Target Audience

developer

Integrations

Not yet documented

Pricing & Plans

Open Source

Free

FAQs

What is the primary advantage of dqlite over standard SQLite?

dqlite extends SQLite with a network protocol, enabling it to function as a replicated and fault-tolerant SQL engine across multiple application instances. This provides high availability and automatic failover, which standard SQLite does not offer inherently.

What operating systems does dqlite support?

dqlite is designed to run on Linux and specifically requires a kernel with support for native asynchronous I/O. It is not compatible with POSIX AIO, so users should ensure their Linux environment meets this requirement.

Can dqlite be statically linked into a project?

Yes, dqlite is released under a modified LGPLv3 license that includes a copyright exception specifically allowing users to statically link the library into their projects and release the final work under their own terms.

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