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Message DB

Message DB

Microservice Native Event Store and Message Store for Postgres

A fully-featured event store and message store implemented in PostgreSQL for Pub/Sub, Event Sourcing, Messaging, and Evented Microservices applications.

Features

  • Pub/Sub
  • JSON message data
  • Event streams
  • Stream categories
  • Metadata
  • Message queues
  • Message storage
  • Consumer groups
  • Service host
  • Administration tools
  • Reports

Rationale

An event sourcing and Pub/Sub message store built on Postgres for simple cloud or local hosting. A minimalist implementation of the essential features of tools like Event Store or Kafka, with built-in support for messaging patterns like Pub/Sub, and consumer patterns like consumer groups.

Message DB was extracted from the Eventide Project to make it easier for users to write clients in the language of their choosing.

User Guide

A complete user guide is available on the Eventide Project docs site:

http://docs.eventide-project.org/user-guide/message-db/

NPM Distribution of Message DB

This library is an NPM module package of the Message DB database for Postgres.

For more information, see:

https://github.com/message-db/message-db

Installation

npm install @eventide/message-db

Create the Postgres Database

Running the database installation tool creates the database, schema, table, indexes, functions, views, types, a user role, and limit the user's privileges to the message store's public interface.

Note: Make sure that your default Postgres user has administrative privileges.

To execute the update script, navigate to the directory where the message-db module is installed and run the script:

install.sh

Database Name

By default, the database creation tool will create a database named message_store.

If you prefer either a different database name, you can override the name using the DATABASE_NAME environment variable.

DATABASE_NAME=some_other_database install.sh

License

The message-db library is released under the MIT License.

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Microservice native event store and message store for Postgres

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