Dubbo source code analysis - Dubbo SPI get adaptive extension point instance

Dubbo SPI series On Java SPI How to use Dubbo SPI (I) - automatic packaging of extension points Dubbo SPI using method (2) - extended point adaption Dubbo SPI usage (3) - automatic assembly of extension points Dubbo source code analysis - Application of Dubbo SPI in Protocol layer Dubbo source code analysis - Dubbo SPI obtains extension poin ...

Posted on Sun, 29 Mar 2020 02:15:21 -0400 by jfs0479

SpringBoot learning notes-011

4.9. Use external Servlet container Embedded Servlet content: application is made into executable jar Advantages: simple, portable; Disadvantages: JSP is not supported by default, and optimization and customization are more complex (using the customizer [ServerProperties, custom EmbeddedServletContainerCustomizer], write the creation factory [E ...

Posted on Sat, 28 Mar 2020 06:51:51 -0400 by vbzoom.com

Is your code well written?

1. MyBatis should not write 1 = 1 for multiple query conditions When we encounter multiple query conditions, where 1=1 can be a convenient solution to our problem, but it is likely to cause a very large performance loss because after adding a filter condition of where 1=1, the database system will not be able to use query optimization strategie ...

Posted on Fri, 27 Mar 2020 23:57:07 -0400 by whoisKeel

JavaMail send mail? It's super simple. Let's see

1. What is JavaMail? Baidu Encyclopedia said so 1.1 application scenario When the user registers, enter the mailbox Through JavaMail technology, an activation email with activation code is sent to the user's mailbox Within 24 hours, users can click the activation email link, and click the board top email The saving time of mailbox activatio ...

Posted on Fri, 27 Mar 2020 10:53:09 -0400 by php_2004

Vue implements drag upgrade (drag of Jiugong grid)

Thank you for your reference- http://bjbsair.com/2020-03-27/tech-info/7202/ Preface In this article, we will use Vue to complete the drag effect of the nine palace grid, and introduce the grid layout. The specific code and demo can be accessed by clicking the following hyperlink Example of effectiveness Demo Simple understanding of Grid layou ...

Posted on Fri, 27 Mar 2020 09:03:21 -0400 by Glen

Java object-oriented programming idea

1. What is object-oriented programming Object Oriented Programming (OOP) is not unique to Java, but a kind of programming idea, which is implemented by Java, C + +, Python. Its essence is the abstract thinking process and object-oriented method embodied by the establishment of model. The model is used to reflect the characteristics of things i ...

Posted on Fri, 27 Mar 2020 07:24:36 -0400 by azylka

Dubbo SPI usage - extended point adaptation

Opening chapter Last one Dubbo SPI usage (1) - automatic wrapping of extension points. This paper continues with Dubbo SPI - extended point adaptation. text outline Introduction to adaptive extension point @How to use Adaptive annotation Act on class Act on method 1. Adaptive extension point The dependent extension point injected by Exte ...

Posted on Fri, 27 Mar 2020 05:54:13 -0400 by nicky77uk1

PyQt5 Case Summary (concise version)

01 Menu Bar import sys from PyQt5.QtWidgets import QMainWindow, QAction, qApp, QApplication from PyQt5.QtGui import QIcon class Example(QMainWindow): def __init__(self): super().__init__() self.initUI() def initUI(self): exitAct = QAction(QIcon('exit.png'), '&Exit', self) exitAct.setShortcut('Ct ...

Posted on Fri, 27 Mar 2020 05:10:57 -0400 by mkoga

python crawls the girls chart - tkinter Download Interface

Environmental preparation python installation To use python crawler to crawl pictures, first install python Refer to: Installation and version detection of python under Windows 2. IDE installation PyCharm is a Python IDE, with a set of tools that can help users improve their efficiency when using Python language development, such as debuggin ...

Posted on Fri, 27 Mar 2020 05:03:15 -0400 by fantasticham

Explanation of Dubbo's principles and high availability testing using zookeeper as a registry

Foreword: Today we will explain to you the principle of Dubbp invocation, and a demo test to show you the running process of Dubbo.In the previous article, we talked about-- Zookeeper Installation Test for Dubbo and Building Zookeeper Cluster In which we have already talked about the building of Zookeeper cluster. Today we will also use this cl ...

Posted on Fri, 27 Mar 2020 00:12:35 -0400 by SilverFoxDesign