Transaction and lock mechanism in Redis Redis’s transaction mechanism is a mechanism that packages multiple commands for execution, ensuring that all of these commands either execute successfully or fail without any intermediate status. In Redis, transactions are implemented through four commands: MULTI, EXEC, DISCARD and WATCH. MULTI: This command marks the beginning of a transaction. […]
Tag: action
Spring transaction AOP causes transaction failure problem
Situation Description First, AOP was enabled, and transactions were enabled at the same time. The TransactionAspect below is a simple AOP aspect with an Around notification. @Aspect @Component public class TransactionAspect {<!– –> @Pointcut(“execution(* com.qhyu.cloud.datasource.service.TransactionService.*(..))”) // the pointcut expression private void transactionLogInfo() {<!– –>} // the pointcut signature /** *Title: around<br> * Description: This Around […]
8. Data interaction axios
Data interaction axios 1. Introduction to axios 2. Basic syntax of axios 2. 1 axios({}) 2. 2 axios.get(url,{}) 2. 3 axios.post(url,{}) 3. Basic cases 3.1 Local call axios 3. 2 Call axios globally ==4. How to solve cross-domain problems== 4. 1 Method 1 (simple) 4.1 Method 2 (recommended) ==5. Post parameter (request) format== ==6. Interface […]
Spring transactions and distributed transactions
1. Specific definition of transactions Transactions provide a mechanism to incorporate all operations involved in an activity into an indivisible execution unit. All operations that make up a transaction can only be submitted if all operations can be executed normally. As long as any one of the operations fails to execute (an exception occurs) ), […]
Spring transaction @EnableTransactionManagement
Foreword @EnableTransactionManagement is an annotation provided by the Spring framework to enable annotation-based transaction management. By using this annotation, you can enable Spring’s automatic management of transactions, allowing you to use the @Transactional annotation on methods to declare transactions. @EnableTransactionManagement mainly has the following two attributes: mode (default is AdviceMode.PROXY): Specifies the mode of the […]
[Fault Diagnosis Analysis] Rolling bearing fault diagnosis feature extraction with Matlab code
?About the author: A Matlab simulation developer who loves scientific research. He cultivates his mind and improves his technology simultaneously. For code acquisition, paper reproduction and scientific research simulation cooperation, please send a private message. Personal homepage: Matlab Research Studio Personal credo: Investigate things to gain knowledge. For more complete Matlab code and simulation customization […]
Solve javax.persistence.RollbackException: Transaction marked as rollbackOnly Ask
Table of Contents Solve javax.persistence.RollbackException: Transaction marked as rollbackOnly Ask Abnormal 1. Apply logic 2. Persistence context issues 3. Restraint violations Approach 1. Check application logic 2. Review persistence context management 3. Check for constraint violations 4. Exception handling and logging 5. Reference documentation and community support in conclusion Resolving javax.persistence.RollbackException: Transaction marked as rollbackOnly […]
How to optimize large transactions in the interface?
1Foreword As back-end development programmers, we often have some relatively complex logic. For example, we need to write a calling interface for the front end. This interface needs to perform relatively complex business logic operations, such as query and remote interface. Or some logic such as local interface call, update, insertion, calculation, etc., the final […]
How to quickly create a GPTs integrated with Action (take Zuoyebang as an example
Final effect Ability Answering questions will be combined with answers from web searches (which are real-time and conform to standard answers) to guide users to come up with the correct answers themselves. When necessary, users can be guided through drawing to conceive and solve problems. When necessary, a code interpreter will be used to perform […]
An explanation of transaction isolation and other concurrent transactions in MySQL database
In MySQL, the transaction isolation level defines the situation in which a transaction and other concurrent transactions can see each other’s changed data. The SQL standard specifies four isolation levels, as follows: Serialization (SERIALIZABLE): Transactions are executed serially, that is, each transaction must wait for the end of the previous transaction before starting execution. This […]