LokiJS

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LokiJS is a super fast in-memory JavaScript document-oriented database. It enables offline syncing to SQL/NoSQL database servers with SyncProxy, ideal for mobile, Electron, and web apps.

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At a glance

Pricing

Open Source

Free tier

Yes

API

Yes

Skill level

Technical

About

What is LokiJS?

LokiJS is a high-performance, in-memory JavaScript document-oriented database designed for embedding within applications. It allows developers to store JavaScript objects in a NoSQL fashion and retrieve them efficiently. LokiJS supports offline syncing to SQL/NoSQL database servers via SyncProxy, making it an excellent choice for mobile, Electron, and web applications where client-side data management and performance are critical. It runs across various environments including browsers, Node.js, and NativeScript, and features dynamic views, built-in persistence adapters, and a Changes API for robust data handling. The database achieves high performance through unique and binary indexes, supporting millions of operations per second.

Best used for

Ideal for developers who need to embed a fast, in-memory database directly into their JavaScript applications, enable offline data synchronization for mobile and web apps, and manage client-side data efficiently. Especially valuable for performance-critical applications and scenarios where data sets are loaded into a browser page and synchronized.

Common actions

manage data

embed database

sync data offline

optimize performance

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Capabilities

Key features

In-memory database
Document-oriented
Offline syncing
Dynamic views
Persistence adapters
Unique/binary indexes

Target Audience

developer

Integrations

Not yet documented

Pricing & Plans

Open Source

Free

FAQs

What environments does LokiJS support?

LokiJS is highly versatile and can run in various JavaScript environments. This includes web browsers, Node.js (for server-side applications), Node-webkit (for desktop apps), and NativeScript (for mobile applications), as well as hybrid mobile apps like PhoneGap/Cordova.

How does LokiJS achieve high performance?

LokiJS achieves its high performance through the use of unique and binary indexes. These indexing mechanisms allow for very fast access and retrieval of data within collections, supporting millions of operations per second for common database tasks.

Can LokiJS be used for offline data management?

Yes, a key feature of LokiJS is its ability to enable offline syncing to SQL/NoSQL database servers using SyncProxy. This makes it particularly well-suited for mobile, Electron, and web applications that require robust offline data capabilities.

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