Show HN: UnisonDB – B+Tree DB with sub-second replication to 100+ nodes

Summary

UnisonDB Store, stream, and sync instantly — UnisonDB is a log-native, real-time database that replicates like a message bus for AI and Edge Computing. What UnisonDB Is UnisonDB is an open-source database designed specifically for Edge AI and Edge Computing. It is a reactive, log-native and multi-model database built for real-time and edge-scale applications. UnisonDB combines a B+Tree storage engine with WAL-based (Write-Ahead Logging) streaming replication, enabling near-instant fan-out replication across hundreds of nodes — all while preserving strong consistency and durability. Key Features Multi-Modal Storage : Key-Value, Wide-Column, and Large Objects (LOB) : Key-Value, Wide-Column, and Large Objects (LOB) Streaming Replication : WAL-based replication with sub-second fan-out to 100+ edge replicas : WAL-based replication with sub-second fan-out to 100+ edge replicas Real-Time Notifications : ZeroMQ-based(Side-car) change notifications with sub-millisecond latency : ZeroMQ-based(Side-car) change notifications with sub-millisecond latency Durable : B+Tree storage with Write-Ahead Logging : B+Tree storage with Write-Ahead Logging Edge-First Design : Optimized for edge computing and local-first architectures : Optimized for edge computing and local-first architectures Namespace Isolation: Multi-tenancy support with namespace-based isolation Use Cases UnisonDB is built for distributed edge-first architectures systems where data and computation must live close together — reducing network hops, minimizing latency, and enabling real-time responsiveness at scale. By co-locating data with the services that use it, UnisonDB removes the traditional boundary between the database and the application layer. Applications can react to local changes instantly, while UnisonDB’s WAL-based replication ensures eventual consistency across all replicas globally. Quick Start # Clone the repository git clone https://github.com/ankur-anand/unisondb cd unisondb # Build go build -o unisond...