eseménytárolóban

Eseménytárolóban is a Hungarian term that translates to "in the event store" or "event storage" in English. It refers to a system or database designed to store a sequence of immutable events. These events represent significant occurrences or changes within an application or business process. Unlike traditional databases that primarily store the current state of data, an event store records every action that leads to that state.

The core principle behind event sourcing, which heavily utilizes event stores, is that all changes to application state are stored as a sequence of events. Each event is a fact about something that happened in the past. By replaying these events, the application's state can be reconstructed at any point in time. This approach offers several benefits, including a comprehensive audit trail, the ability to derive different views of the data, and simplified debugging as the entire history of operations is preserved.

Event stores are often implemented using specialized databases or append-only logs. They are a fundamental component of event-driven architectures and are frequently used in conjunction with CQRS (Command Query Responsibility Segregation) patterns. The immutability of events in an event store means they cannot be deleted or modified once recorded, ensuring data integrity and providing a reliable historical record.