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1, What is spring MVC 1. Concept: Spring MVC is a convenient web framework provided by spring. It is composed of processor mapping, processor (controller), dispatcher servlet, view parser and view. 2. Operation view: 1. The user sends a request to the front-end controller DispatcherServlet 2. The dispatcher servlet receives a request to call ...

preface For spring boot integrated cache analysis, please refer to the previous article( https://blog.csdn.net/buyaoshuohua1/article/details/119843101)； This time, we mainly analyze the problem of integrating local caches, such as cafe. In fact, this is not troublesome. There are many online cases. Here we talk about the problems encountered ...

1, Review Purchase and sale contract 1. What is a purchase and sales contract 2. Analyze the relationship of table structure 3. Three paradigms and anti three paradigms of design table 4. Add redundant fields to make the query faster 5. Decentralized calculation principle Calculation of total amount of purchase and sales contract 6. Implement ...

preface Introduction to MVC module of Spring official website: Spring Web MVC is the original web framework built on the Servlet API and has been included in the Spring Framework from the very beginning. The formal name, "Spring Web MVC," comes from the name of its source module (spring-webmvc), but it is more commonly known as "Spring ...

Transactions in Spring 1. Business Review Transaction: a logical set of operations, either all successful or all failed. Transaction characteristics: ACID Atomicity: transaction indivisibility consistency: data integrity is consistent before and after transaction execution. Isolation: when a transaction is executed, it should not be dist ...

1. Introduction During the development of the company's projects, we often encounter the following scenarios: 1. When we call a third-party interface or method, we don't need to wait for the method to return to execute other logic. At this time, if the response time is too long, it will greatly affect the execution efficiency of the progra ...

1. This article comes from Silicon Valley and is not suitable for beginners. 2. Come back with a certain foundation. Part I 1, Understanding part 1. Introduction to spring security Let's put it this way. It's a very boastful security framework. It mainly does two things: Authentication and Authorization 2. History Its history, you can sea ...

1, Transaction:         1. Four features: [ACID]                 ① atomicity: indivisibility, which means that multiple operations involved in a transaction are logically indispensable. All operations in the transaction are required to be executed or not executed     &nbs ...

1. Environmental construction 1.1 database files SET NAMES utf8mb4; SET FOREIGN_KEY_CHECKS = 0; -- ---------------------------- -- Table structure for user -- ---------------------------- DROP TABLE IF EXISTS `user`; CREATE TABLE `user` ( `id` int NOT NULL AUTO_INCREMENT COMMENT 'id Primary key', `username` varchar(20) CHARACTER SET ...

1. Enable transaction management: enables transaction management Add the @ EnableTransactionManagement annotation to the spring configuration class @EnableTransactionManagement public class MainConfig4 { } principle @The EnableTransactionManagement annotation will enable spring to automatically manage transactions. With this annotation, ...