> For the complete documentation index, see [llms.txt](https://docs-launchpad.energyweb.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs-launchpad.energyweb.org/energy-solutions/digital-spine-by-energy-web/component-guides/ddhub-message-broker.md).

# DDHub Message Broker

## Overview

The Message Broker is a server that provides message routing, persistence, and delivery for a seamless data exchange between an organization and its participants via their respective Client Gateways.

### Architecture (placeholder)

<figure><img src="/files/5my5OqcFFLdIYqOMvvhq" alt=""><figcaption></figcaption></figure>

### Components

#### DID Auth Proxy

The DID auth proxy provides an authorization server and an `nginx` instance to allow applications to integrate the Energy Web DID solution into any RESTful API service without changing its source code.

#### Master Data and Message Metadata Storage

#### Large File Storage

#### NATS JetStream

JetStream is a built-in persistence engine for NATS which enables messages to be stored and replayed at a later time. Messages can be captured and replayed to consumers as needed.