What is Ankurah?

Ankurah is a state-management framework that enables real-time data synchronization across multiple nodes with built-in observability.

It supports multiple storage and data type backends to enable no-compromise representation of your data.

Note: This project is in the early stages of development, and is not yet ready for production use.

Key Features

Schema-First Design: Define data models using Rust structs with an ActiveRecord-style interface - View/Mutable
Content-filtered pub/sub: Subscribe to changes on a collection using a SQL-like query
Real-Time Observability: Signal-based pattern for tracking entity changes
Distributed Architecture: Multi-node synchronization with event sourcing
Flexible Storage: Support for multiple storage backends (Sled, Postgres, TiKV)
Isomorphic code: Server applications and Web applications use the same code, including first-class support for React and Leptos out of the box

Core Concepts

Model: A struct describing fields and types for entities in a collection (data binding)
Collection: A group of entities of the same type (similar to a database table, and backed by a table in the postgres backend)
Entity: A discrete identity in a collection - Dynamic schema (similar to a schema-less database row)
View: A read-only representation of an entity - Typed by the model
Mutable: A mutable state representation of an entity - Typed by the model
Event: An atomic change that can be applied to an entity - used for synchronization and audit trail

Design Philosophy

Ankurah follows an event-sourced architecture where:

All operations have unique IDs and precursor operations
Entity state is maintained per node with operation tree tracking
Operations use ULID for distributed ID generation
Entity IDs are derived from their creation operation

Quick Example

#![allow(unused)]
fn main() {
// Subscribe to changes on the client
let subscription = client.subscribe::<_,_,AlbumView>(
    "name = 'Origin of Symmetry'",
    |changes| {
        println!("Received changes: {}", changes);
    }
).await?;

// Create a new album on the server
let trx = server.begin();
let album = trx.create(&Album {
    name: "Origin of Symmetry".into(),
    year: "2001".into(),
}).await?;
trx.commit().await?;
}

Community

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License

Ankurah is dual-licensed under MIT or Apache-2.0.

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