Programmer Think

catalogue summary Preparatory knowledge Simulation environment preparation CPU full Memory leak deadlock Frequent thread switching summary summary Performance optimization has always been the focus of back-end service optimization, but online performance failure problems do not often occur, or due to business products, there is n ...

Definition: Extensible Markup Language characteristic: XML has nothing to do with programming languagesIt can realize the data conversion between systems realized by different programming languages Purpose: Data exchangeImplementation project profile Comparison with json: json is more lightweight than xmlxml is more readabl ...

Tip: after the article is written, the directory can be generated automatically. Please refer to the help document on the right for how to generate it Basic data types and variables of java series preface In ancient times, great events must be established not only by extraordinary talents, but also by perseverance! 1. Literal consta ...

Express e stack (Io serialization) MVC mode (three-tier architecture mode) Concept: MVC (model view controller) is a framework mode. In the classic MVC mode, M refers to the business model, V refers to the user interface, and C refers to the controller. M: Namely model A model is a model that represents business rules. V: Namely View Vi ...

preface After a year, I found myself slack and didn't blog much. I also wanted to write the problems encountered in the project, but I didn't put them into action. Recently, I reconstructed some bad code of the project. When I'm free, it's also time to share the problems encountered in the project with you.Well, after nagging, today we wi ...

Write in front When you see this article, it has been integrated by default Springcloud/gateway/springfox(swaggerui3), It's just a problem when testing the service. Problem description When accessing through the swagger UI page, we will ignore the service name and directly access the interface mapped by swagger, but we forward it throug ...

    Introduction to Mybatis - add, delete, modify and query a single table based on configuration Introduction to Mybatis Configuration steps Use steps (all xml configurations have been configured) Basic data Entity class Interface of DAO layer Master profile Sub profile Test class  summary Introduction to Mybatis Official ...

JavaSE_04 [ process control statement ] Today's content for loop statementwhile loop statementdo... while loop statementbreakcontinue Learning objectives Understand the format and execution process of for statement Understand the format and execution flow of while statement Understand the format and execution flow of do... while statement ...

ThreadPoolExecutor task submission executor task submission process It can be seen from the source code that the Excutor interface under JUC only provides an executable method executor public interface Executor { /** * Executes the given command at some time in the future. The command * may execute in a new thread, in a poole ...

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 ...