SpacetimeDB

SpacetimeDB is a full-featured relational database and server platform combined into a single unified architecture. It allows developers to write server-side business logic in Rust, C#, TypeScript, or C++ and execute it directly inside the database at memory speed, eliminating the need for traditional backend microservices.

Real-Time State Synchronization

Features built-in real-time data sync via client subscriptions and state mirroring, automatically pushing database mutations directly to local client caches without requiring complex web-socket plumbing.

Transactional Reducers

Application logic is written as transactional reducers, atomic server-side functions that validate requests and execute state mutations with strict consistency guarantees.

How it Compares

Where traditional architectures require separate web servers, caches, message brokers, and databases, SpacetimeDB collapses the entire backend stack into a single reactive database host optimized for high-throughput, low-latency applications.

Who it is for

SpacetimeDB is built for full-stack engineers, game developers, and autonomous agent architects building real-time collaborative apps, multiplayer games, and reactive event-driven platforms.