Dirty Checking - bobocode-breskul/bibernate GitHub Wiki

Dirty Checking

Overview

Dirty checking is an essential mechanism in ORM (Object-Relational Mapping) frameworks, including Bibernate. It automatically detects changes made to an entity since it was last persisted. This mechanism is crucial for efficient data synchronization between an application's state and the database, ensuring that only modified entities are updated in the database.

How It Works

• When an entity is retrieved from the database, its state is cached.
• Upon a transaction commit, Bibernate compares the entity's current state with the cached state.
• Only entities with changes (dirty entities) are sent to the database for an update.
• This process minimizes unnecessary database write operations, enhancing performance.

Benefits

• Efficiency: Reduces the number of database operations by ensuring only modified entities are updated.
• Performance: Increases application performance by avoiding unnecessary data persistence operations.
• Automatic Sync: Simplifies the synchronization process between the in-memory objects and the database.