Skip to content
Maratib Ali Khan maratib

Core Architecture

  • Hibernate’s architecture is designed to be layered and modular, providing flexibility and extensibility.
  • The core components work together to manage the persistence lifecycle, from object creation to database synchronization.

Core Architecture

Key Components:

  • SessionFactory: Thread-safe, immutable cache of compiled mappings for a single database. Heavyweight object that should be created once during application startup. It internally maintains a connection pool and second-level cache.

  • Session: Single-threaded, short-lived object representing a conversation between the application and database. Wraps a JDBC connection and serves as a factory for Transaction instances. Maintains first-level cache of persistent objects.

  • Transaction: Single-threaded, short-lived object that abstracts underlying transaction API (JTA or JDBC). Defines atomic units of work with database.

  • ConnectionProvider: Factory for JDBC connections, abstracting connection pool implementation (C3P0, HikariCP, etc.)

  • TransactionFactory: Factory for Transaction instances, abstracting transaction management strategy