Understanding Data Consistency with Sessions At their core, Mongoose transactions and sessions allow you to group multiple database operations so they succeed or fail as one. If your application needs to update two different records that depend on each other, sessions provide the safety net to ensure you never end up with an inconsistent state. The Restaurant Kitchen Analogy Think of a restaurant kitchen during a busy dinner service. A single order might involve the grill station cooking a steak and the pantry station plating a salad. If the steak burns, the manager doesn't want the salad sent out alone, which would leave the customer with an incomplete meal. Instead, the manager holds the entire order until everything is perfect. A session acts as that manager, ensuring the steak and salad arrive at the table together, or not at all. Daily Industry Impact Developers use this pattern daily to avoid the "orphan data" problem. Whether you are creating a new user pro...