What is Transaction Manager?

A transaction manager is a software component (or a system) that manages the consistent and reliable execution of transactions across one or more resource managers (such as databases, message queues, or file systems). It ensures that transactions adhere to the ACID properties: Atomicity (all or nothing), Consistency (maintains data integrity), Isolation (transactions are isolated from each other), and Durability (committed changes are persistent). Transaction managers coordinate the commit or rollback of transactions, handling failures and concurrency to maintain data integrity and consistency across multiple systems or resources. They are commonly used in distributed systems, databases, and enterprise applications to ensure reliable data processing.