https://github.com/ostafen/eventstorm

An EventStoreDB compatible database built on top of PostgreSQL.
https://github.com/ostafen/eventstorm

eventsourcing eventstore eventstoredb postgresql projections projections-system stream-processing streams

Last synced: 7 months ago
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An EventStoreDB compatible database built on top of PostgreSQL.

• Host: GitHub
• URL: https://github.com/ostafen/eventstorm
• Owner: ostafen
• License: mit
• Created: 2023-06-02T14:44:17.000Z (over 2 years ago)
• Default Branch: develop
• Last Pushed: 2023-06-06T16:01:13.000Z (over 2 years ago)
• Last Synced: 2025-01-25T19:42:23.064Z (9 months ago)
• Topics: eventsourcing, eventstore, eventstoredb, postgresql, projections, projections-system, stream-processing, streams
• Language: Go
• Homepage:
• Size: 163 KB
• Stars: 2
• Watchers: 3
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
# EventStormDB

![build & test workflow](https://github.com/ostafen/eventstorm/actions/workflows/build-test.yml/badge.svg)

**EventStormDB** implements a state-transition database on top of PostgreSQL. It acts a a conversion layer between any [EventStoreDB](https://www.eventstore.com) compatible client and the SQL language.

## Why EventStormDB?

Event Store is a purpose-built database, offering advanced stream analysis and querying features that are otherwise difficult to replicate with SQL or a data analysis pipeline. Its [Projection Subsystem](https://developers.eventstore.com/server/v5/projections.html#introduction-to-projections) provides the ability to pipe existing streams through transformation functions that write other streams that which can be then consumed directly or trigger further transformations.

However, due to its use-case specific nature, it is not likely for a real world application to completely rely on Event Store. 

On the countrary, Postgres is a general purpose SQL database, which is developer friendly and battle-tested.

It ships with a miryad of community developed extensions and it is well-supported by major cloud providers like Amazon Web Services and Google Cloud Platform.

That is why implementing a simple eventsourcing layer on the top of PostgreSQL is a common and cheaper choice with respect to the cost of switching and maintain an EventStoreDB cluster.

**EventStorm** was born to provide the full power of EventStore stream processing primitives to PostgreSQL users without additional dependencies.

It is meant to be a replacement for EventStore expecially in following scenarios:

- You are aready running PostgreSQL, but want to exploit the power of EventStore subscriptions and/or projections;

- You want to estimate the impact of migrating to EventStoreDB.

You should rather use **EventStoreDB** if:

- you need a distributed database;

- you have to deal with tremendous write workloads which cannot be handled by PostgreSQL (EventStoreDB makes use of append-only log).

## Contact

Stefano Scafiti @ostafen

## License

EventStormDB source code is available under the **MIT License**.