Programmer Think

Note: mybatis plus is configured with multiple data sources. After adding transactions, the data source switching fails1, Scene descriptionFor multiple data sources used in the project, Impl has a method: MethodA.@Service @AllArgsConstructor @DS("tableA") public class XXXXServiceImpl extends ServiceImpl<XXXXMapper, XXXX> implements XXXXSe ...

Transaction What is a transaction? A smallest non separable work unit; Usually, a transaction corresponds to a complete business (for example, bank account transfer business, which is the smallest work unit) A complete business requires batch DML(insert, update, delete) statements to be jointly completed Transactions are only related ...

prefaceYou may have seen the spring transaction failure scenario in many articles, so let's take a look at the water today to see if you can harvest something different. Go straight to the topicspring transaction failure scenarios and reasons1. Scenario 1: the service is not hosted to springpublic class TranInvalidCaseWithoutInjectSpring { ...

Is your DDL execution transactionalRecently, flyway was integrated into the project. In terms of transaction processing in the official document, an interesting paragraph was found:If your database cleanly supports DDL statements within a transaction, failed migrations will always be rolled back (unless they were marked as non-transactional).If ...

When a spring transaction is mentioned, it is reminiscent of four basic characteristics, five isolation levels and seven communication characteristics. I'm sure most people know this, but knowing it's one thing, and using it well is another. When using Spring transactions, I've encountered several serious issues, so I'll make a self-summary her ...

1. spring declarative transaction overview Transaction management is very important for enterprise applications. When an exception occurs, it can ensure the consistency of data. spring supports programmatic transaction management and declarative transaction management. First, let's take a look at the thing abstraction of the spring framew ...

The emergence of SpringBoot makes it very easy to use transactions in projects. There are two ways to use them, which are suitable for annotation transactions (declarative transaction management) of small projects and global transactions of large projects. 1. Annotation transactions. (secondary) There are only two steps to annotate transactio ...

1. Spring5 transactions What is a transaction? Transaction is the most basic unit of database operation. Logically, it is a set of operations. Either all succeed. If one fails, all fail. Four characteristics of transactions: Atomicity, consistency, isolation, persistence. A case we often encounter is the problem of bank transfer. ...

Spring (IV) -- transaction propagation (introduction, example explanation, level introduction, code implementation) 1, Transaction propagation 1. Transactional communication introduction Spring defines an enumeration class to facilitate the use of transaction propagation behavior: 2. Transaction propagation example explanation Or use th ...

Distributed transaction series tutorial - Chapter 4 - XA solution to solve distributed transactions 1, XA solution Xa is a distributed transaction protocol proposed by Tuxedo. Xa is roughly divided into two parts: transaction manager (TM) and resource manager (RM). The resource manager (RM) is implemented by databases, such as Oracle and DB2. ...