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.

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

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.

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

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

This library is a Ruby Gem package of the Message DB database for Postgres.

For more information, see:

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

This package also includes executable scripts installed into the RubyGems execution search path.

For more information on the executables, see:

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

gem install message-db

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.

The database installation Ruby executable will be installed with the message-db gem. The executable will be in the gem executable search path and may also be executed through bundler:

bundle exec mdb-create-db

For more information about Ruby executables installed with the message-db Ruby Gem, see the Eventide docs on the administration tools that are bundled with the gem:

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

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 bundle exec mdb-create-db

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