Shared Database

Flux Shared DB is a decentralized, persistent database service built on FluxCloud. It bundles standard DB engines with a custom “operator” that:

1. Discovers peers via FluxCloud

2. Forms a Master‑Slave cluster

3. Exposes a native DB interface on port 3307

Overview

• High‑Availability Cluster Replicates automatically across ≥3 FluxNodes. No single point of failure.

• Master‑Slave Replication

  • Master handles writes, stamps and sequences them.

  • Slaves replicate the Master’s data.

  • Reads served locally by any node.

• Scalability & Fault Tolerance

  • Reads scale horizontally with added nodes.

  • Writes remain globally ordered by the Master.

Figure: Cluster architecture Clients connect on port 3307; Master sequences writes (red) and replicates to Slaves; any node can serve reads (green).

Supported Engines

• ✅ MySQL (fully supported)

• 🚧 MongoDB (in progress)

• 🚧 PostgreSQL (in progress)

How To Deploy

1. Sign in at home.runonflux.com → Applications → Register New Application

2. Complete, in order:

• Details

• Component

• Validate & Pay