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In the first part, we optimized the sending time of heartbeat. The client sends heartbeat after successful handshake. It is adjusted to start heartbeat sending after successful login, so as to ensure that the heartbeat mechanism can truly establish and maintain the effectiveness of the logical business message channel between the client and the ...

Thread pool is a very important knowledge point and a typical application of pooling technology. I believe many people have the experience of using thread pool, but do you know the implementation principle of thread pool? In this article, we will explore the source code of thread pool. Origin of thread pool Background: with the upgradi ...

character string String is the most commonly used data type in Python; Generally, use quotation marks' ',' ',' '(single, double and three quotation marks) and the equal sign "=" to assign a string. str1 = 'This is a string' str2 = "Life's short. I use python" str3 = """ The content in the three quotation marks is also a string ...

Introduction: This paper introduces how to test the memory access delay of multi-level cache and the computer principle behind it.The CPU cache is often a multi-level pyramid model. L1 is closest to the CPU and has the smallest access delay, but the cache capacity is also the smallest. This paper introduces how to test the memory access delay o ...

Python wechat ordering applet course video https://edu.csdn.net/course/detail/36074 Python actual combat quantitative transaction financial management system https://edu.csdn.net/course/detail/35475 Series navigation Use Hot Chocolate and NET 6 to build GraphQL application article index demand After discussing the query requirements in G ...

https://github.com/datawhalechina/team-learning-program/tree/master/IntroductionToNumpy Input and output 1. numpy binary file Save(), savez() and load() functions save and read data in numpy special binary types (. npy,. npz). These three functions will automatically process information such as ndim, dtype and shape. It is very convenient to ...

iterator What is an iterator The object that implements the next method is the iterator. The next method can have zero or one parameter and return an object. The format of this object is shown in the following example code: const iter = { next() { return {done: false, value: 1} } } Done indicates whether the iteration is completed, and ...

1, Introduction In actual business, we may use crawlers to obtain historical data of Baidu search index according to keywords, and then conduct corresponding data analysis. Baidu Index, experience the beauty of big data. However, the difficulties in obtaining data related to Baidu Index are as follows: It is not a static web page, and the ...

mysql 5.7 installation Download yum source $ vagrant up # Start the virtual machine $ vagrant ssh # Connect to virtual machine # Download mysql 5.7 wget https://dev.mysql.com/get/mysql57-community-release-el7-11.noarch.rpm Install yum source locally yum install -y mysql-community-server Check whether the mysql source is successfully i ...

Jetpck Dagger-HiltWhat is dependency injectionThere is a variable in a class, which is the dependency of the class. Then assign the value to this variable through external injection, which is called dependency injection.What is Hilt​ Hilt is Android's dependency injection and storage, which is actually based on Dagger. It can be said that hil ...