josephg/sharejs

Features

• Operational Transformation Engines - Implements a synchronization engine that manages document state through atomic modification operations using operational transform.
• Operational Transformation - Implements operational transform algorithms to resolve concurrent editing conflicts and maintain consistent document states across distributed clients.
• Client-Server State Synchronization - Maintains coherence between remote server state and local client state using a real-time synchronization engine.
• Live Query Engines - Implements a live query engine that returns auto-updating result sets reflecting the latest backend document state.
• Document Databases - Provides a document-oriented database designed for shared documents with live-bound queries and real-time updates.
• Event-Driven Subscription Systems - Pushes real-time document updates to clients via persistent connections to ensure immediate synchronization of remote edits.
• Client-Side Buffers - Implements a persistent client-side buffer that queues document modifications during network interruptions for automatic synchronization upon reconnection.
• Offline-First Persistence - Implements offline-first persistence allowing users to edit documents while disconnected and sync upon reconnection.
• Real-time Data Subscriptions - Provides a real-time data feed for clients to subscribe to live database updates via persistent streams.
• Collaborative Document Management - Provides lifecycle management for shared documents, including creation, retrieval, and deletion with state synchronization.
• REST-Based Database Synchronization - Provides a REST-based interface for triggering synchronization actions and managing shared document states via HTTP.
• Resource Access Control Layers - Implements a resource access control layer that intercepts database requests to enforce security policies and rewrite queries.
• Data Sync Conflict Resolution - Uses operational transform as a conflict resolution strategy to synchronize concurrent edits of plain-text and JSON data.
• Offline-First Synchronization - Provides architectural support for offline-first synchronization, queuing local modifications and merging them after reconnection.
• Request Interception Middleware - Uses request interception middleware to validate permissions and rewrite database queries before execution for secure data access.
• Offline Request Queues - Queues document modifications in local storage during offline periods for automatic retry upon reconnection.
• Real-Time Collaborative Editing - Supports real-time collaborative editing of JSON and plain-text documents with automatic conflict resolution.
• REST API Interfaces - Provides server-side RESTful endpoints to manage document states and trigger synchronization engine actions via standard HTTP methods.
• Database Request Rewriting - Ships a middleware layer that intercepts and rewrites database requests to enforce granular security and access policies.
• Engine-to-API Mappings - Translates standard HTTP methods into internal synchronization engine actions to expose document state as a web interface.
• Collaborative Editing - Library for concurrent content editing using operational transforms.

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