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order This paper mainly studies the CanalAdapterWorker of canal CanalAdapterWorker canal-1.1.4/client-adapter/launcher/src/main/java/com/alibaba/otter/canal/adapter/launcher/loader/CanalAdapterWorker.java public class CanalAdapterWorker extends AbstractCanalAdapterWorker { private static final int BATCH_SIZE = 50; private static final ...

Note: the title of written test programming is handwritten, with a full score of 150 and a time of 2 hours. This year is the second year of enrollment. For the first year of re examination, please refer to https://blog.csdn.net/qq_27513221/article/details/79424084 In terms of topic types, there are mainly recursion, en ...

Preface BlockingQueue is blocking queues. It's a wonderful way to use ReentrantLock. Based on its basic principles, we can achieve long-connection chat on the Web. Of course, the most common way to do this is to implement producer-consumer mode, as shown in the following figure: In Java, BlockingQueue is an interface whose implementation class ...

The principle of accuracy is described in the previous article. https://my.oschina.net/xiaogg/blog/2998192 Also mentioned some solutions Today I'm going to talk about a new approach Is to make use of bignumber.js This plugin. I've applied this plugin to the calculation of grocery shopping Instance address: http://tool.bitefu.net/jisuan/ Buy ...

1 Introduction to reflection mechanism The reflection mechanism of Java refers to that in the running state of a program, you can construct an object of any class, understand the class to which any object belongs, understand the member variables and methods of any class, and call the properties and methods of any object. This dynamic access to ...

   1 optional combination of selectors, mixed use <span style="font-size:14px;color:#006600;"></span>   // Multiple selectors are separated by spaces or specified symbols to match the elements represented by the last selector that has a specified relationship with the former $("#uid span"); // Select al ...

Tools: CMD sqlplus Content: basic table operation, plsql programming (branch structure, loop, judgment, etc.) Account: scott preparation in advance Tips for using cmd Because the author uses sqlplus and enters in the cmd environment. It's not easy to edit the text in cmd environment, so I'll give you some tips. A ...

Discard clip: for the rendering of transparent objects, you can discard the clip: void main() { vec4 texColor = texture(texture1, TexCoords); if(texColor.a < 0.1) discard; FragColor = texColor; } Blend: although it's good to discard the clip directly, it can't render a translucent image. We ei ...

This article address: https://www.laruence.com/2020/03/11/5475.html Please indicate the source for reprinting With PHP 7.4 comes an extension that I think is very useful: PHP FFI (Foreign Function interface), which refers to a description in a PHP FFI RFC: For PHP, FFI provides a way to write PHP extensions and bindings to C li ...

In business development, listeners are often used. For example, when events of the same type are triggered in multiple scenarios, it is more suitable to use listeners. There are several forms of using listeners in spring boot, which are slightly different Customize the start of SpringApplication SpringApplication springApplication = new S ...