MySQLTransactionRollbackException: Deadlock Found - Causes and Solutions

This exception is thrown when a deadlock is detected while trying to acquire a lock on a resource in a MySQL database.\n\nA deadlock occurs when two or more transactions are waiting for each other to release resources, resulting in a circular dependency. In this case, the transaction is rolled back to resolve the deadlock.\n\nTo handle this exception, you can try one or more of the following:\n\n1. Retry the transaction: You can catch the exception and retry the transaction after a certain delay. This approach assumes that the deadlock is temporary and will be resolved after a retry.\n\n2. Optimize the database schema and queries: Deadlocks can occur due to inefficient queries or poor database design. Analyze and optimize your queries, use appropriate indexes, and ensure that transactions are kept as short as possible.\n\n3. Use explicit locking: If you are manually acquiring locks on resources, make sure you are releasing them properly to avoid deadlocks. Consider using explicit locking mechanisms like row-level locking or table-level locking.\n\n4. Use timeouts: Set a timeout for acquiring locks, so that if a lock cannot be acquired within a certain time, the transaction can be rolled back and retried.\n\n5. Analyze deadlock logs: MySQL provides logs and tools to analyze deadlocks. By analyzing the logs, you can identify the queries and resources involved in the deadlock and take appropriate actions to prevent them in the future.\n\nIt's important to note that the specific solution depends on the context and nature of your application and database. Understanding the cause of the deadlock and analyzing the relevant logs will help in finding the most appropriate solution.