What are different propagation strategy in Spring.

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Accepted Answer

Propagation strategies in Spring are used to manage transactions across multiple beans.

Propagation.REQUIRED: Default propagation behavior. Creates a new transaction if none exists, otherwise joins the existing transaction.
Propagation.REQUIRES_NEW: Always creates a new transaction, suspending the current transaction if one exists.
Propagation.NESTED: Creates a nested transaction within the current transaction, rolling back only the nested transaction if an error occurs.
Propagation.MANDATORY: Requires a transaction to be present, throwing an exception if none exists.
Propagation.SUPPORTS: Supports a transaction if one exists, otherwise executes non-transactionally.
Propagation.NOT_SUPPORTED: Executes non-transactionally, suspending any existing transaction.
Propagation.NEVER: Executes non-transactionally, throwing an exception if a transaction exists.

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