Mybatis interface proxy method Dao

Dao interface proxy Case project skeleton What is agent development? Mapper interface development needs to follow the following specifications Write StudentMapper interface Case demonstration Source code analysis Analyze how dynamic proxy objects are generated? How is the analysis method performed? Dao interface proxy Case project sk ...

Added by cpharry on Sat, 26 Feb 2022 20:45:22 +0200

[WeChat Applet Foundation] Java Script's first exposure to Java Script from getting started to giving up

Preface Now that you've vowed to be a full stack engineer, you've learned to draw PCB s, C, ESP32(WiFi) programming, Linux application programming, processes, threading, network programming, and so on, and how devices connect to the cloud platform. Now it's just a matter of mobile control, and the WeChat applet is undoubtedly the first c ...

Added by LikPan on Sat, 26 Feb 2022 20:11:56 +0200

Gap Lock in MySQL InnoDB

Lock List Shared and Column Exclusive LocksIntent LockRecord LockGap lockNext-Key LockInsert Intent LockAUTO-INC lock This time we will only discuss and experiment with intent locks. Gap lock Gap locks are also index records of locks, locking values that do not exist in gaps. What is gap lock? Gap locks are locks on gaps between index rec ...

Added by ksukat on Sat, 26 Feb 2022 20:12:27 +0200

Quick batch processing of logs in COS using cloud functions

CLS log services can trigger cloud functions directly for fast processing, but there are a little more triggers. For example, if the log being processed is originally generated by a cloud function, the number of function triggers will be doubled. If the log does not need to be processed in time, you can let it accumulate a minute in the CLS and ...

Added by thebutler on Sat, 26 Feb 2022 19:48:57 +0200

Spring Learning Notes - AOP and Spring Transaction Learning

This weekend, I'm going to take a look at another focus of Spring, transaction learning in AOP and Spring. I've written articles about transactions before, all about how to use them in my work. I'll add some basics today, try to explain the role in some straightforward words, and then sort out the interview questions I occasionally heard in the ...

Added by fukas on Sat, 26 Feb 2022 19:43:38 +0200

Smart use of CSS to mosaic pictures

Python WeChat Subscription Applet Course Video https://edu.csdn.net/course/detail/36074 Python Actual Quantitative Transaction Finance System https://edu.csdn.net/course/detail/35475 1. Introduction to image-rendering An interesting feature in CSS is called image-rendering It can use algorithms to display the scaled pictures better. Suppo ...

Added by belphegor on Sat, 26 Feb 2022 19:33:43 +0200

AQS Source Exploration-JUC Series

Python WeChat Subscription Applet Course Video https://edu.csdn.net/course/detail/36074 Python Actual Quantitative Transaction Finance System https://edu.csdn.net/course/detail/35475 This article has been published on Public Number. Thank you for your interest and look forward to communicating with you. AQS Source Exploration-JUC Series ...

Added by cjdesign on Sat, 26 Feb 2022 19:25:07 +0200

STM32+CubeMX+Keil+HAL Library

  Catalog 1. Set up GPIO: 2. printf redirection 3. Log information format 4. Personalized Output 5. CubeMX+HAL Open Serial Interrupt 6. Open external interrupt 7. Clock Tree Basic Operations 8. Universal timer configuration 9. CubeMX Configuration Timer (1) Set the timer clock to 72M (2) Select internal clock (3) Configure timer ( ...

Added by sgbalsekar on Sat, 26 Feb 2022 19:21:01 +0200

[Vue] Part XII communication between components (custom event, global event bus, message subscription and Publication) is very important

[Vue] Part XII communication between components (custom event, global event bus, message subscription and Publication) is very important 12. Communication between components (custom event, global event bus, message subscription and Publication) 12.1 component customization events Function: it can realize the communication between ...

Added by worldofcarp on Sat, 26 Feb 2022 19:06:19 +0200

[C + +] detailed explanation of polymorphism

concept Polymorphism, that is, multiple forms, that is, different objects will produce different states when they complete a certain behavior. For example, when buying tickets in the past, ordinary people bought tickets normally, students bought tickets at half price, and soldiers bought tickets first. Definition and Implementation Com ...

Added by xkaix on Sat, 26 Feb 2022 19:04:25 +0200