DB-EnginesCrateDB bannerEnglish
Deutsch
Knowledge Base of Relational and NoSQL Database Management Systemsprovided by solid IT

Encyclopedia > Article

Event Stores

Event stores are database management systems implementing the concept of event sourcing. They persists all state changing events for an object together with a timestamp, thereby creating time series for individual objects. The current state of an object can be inferred by replaying all events for that object from time 0 till the current time.

In contrast, the other types of DBMS store the current state of an object (and loose the history, if not explicitly modelled).

As an example, for a shopping cart object each insertion of a product (product name, quantity, price) would be persisted as a new event.

Supported operations on Event Stores are the addition of new events and querying event time series for objects. Not supported are modifications or deletions of already persisted events. That simplifies maintaining consistency in distributed systems.

Due to performance reasons many Event Stores realize concepts for holding snapshots (object states at a specific point in time).

Important Examples

Find more details in our event store ranking.



Featured Products

Couchbase logo

SQL + JSON + NoSQL.
Power, flexibility & scale.
All open source.
Get started now.

Redis logo

Start now with Redis Cloud
Secure, highly available Redis as a serverless, hosted, fully managed cloud service.
Sign up here.

RavenDB logo

Runs on Windows, Linux, Raspberry Pi. Easy to Operate, Fast Performance.
APIs for JS, .NET, Python.
Take a Free Download

Neo4j logo

New to the world of graph databases? Become an expert today with your copy of the Graph Databases for Beginners ebook.

Present your product here