Ejdb

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EJDB is an embeddable JSON database engine implemented as a C library, featuring a simple XPath-like query language (JQL). It supports online backups and HTTP REST/Websockets endpoints for flexible data access.

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At a glance

Pricing

Open Source

Free tier

Yes

API

Yes

Skill level

Technical

About

What is ejdb?

EJDB2 is an embeddable JSON database engine provided as a C library, designed for applications requiring local JSON data storage and retrieval. It features a simple yet powerful XPath-like query language (JQL) for querying and updating JSON documents, inspired by Unix shell pipes. The engine supports online backups and offers HTTP REST/Websockets endpoints for network access. Built on IOWOW, a persistent key/value storage engine, EJDB2 provides native language bindings and is tested on Linux, macOS, and FreeBSD. Its JQL allows for complex filtering, projections, collection joins, and data modification using JSON patch specifications, including non-standard extensions like increment and add_create.

Best used for

Ideal for developers who need to embed a lightweight JSON database directly into their C applications, query complex JSON structures using an XPath-like language, and expose data via HTTP/Websockets. Especially valuable for projects requiring efficient local data storage and flexible data manipulation.

Common actions

embed database

query JSON data

manage JSON documents

build C applications

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Capabilities

Key features

Embeddable JSON database
XPath-like query language (JQL)
Online backups support
HTTP REST/Websockets API
C11 API
Collection joins

Target Audience

developer

Integrations

Not yet documented

Pricing & Plans

Open Source

Free

FAQs

What is the primary programming language for EJDB2?

EJDB2 is implemented as a C library, providing a C11 API for direct integration into applications. It is designed for developers working with C-based projects who need an embeddable JSON database solution.

Does EJDB2 support network access to the database?

Yes, EJDB2 includes built-in support for HTTP REST and Websockets endpoints. This allows applications to interact with the database over a network, providing flexibility for client-server architectures.

What kind of query language does EJDB2 use?

EJDB2 utilizes its own JQL (EJDB Query Language), which is inspired by XPath and Unix shell pipes. JQL enables powerful querying, filtering, projections, and data modification of JSON documents.

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