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  Introduction to the Application of eBPF in Golang

Most of the time, when we develop software or even use software, we play within the safe boundaries of the operating system. We might not know how the network interface welcomes that IP packet, nor how the filesystem handles the inodes when we save a file. This boundary is called user space, which is where we write applications, libraries, and tools. But there's another world, kernel space, where the operating system's kernel resides and is responsible for managing system resources such as memor...

   EBPF,GOLANG,GUIDE,APPLICATION     2024-10-02 08:46:37

  bcrypt: Safeguarding Passwords with Strong Hashing and Adaptive Security

Introduction In today's digital world, passwords play a crucial role in protecting personal privacy and information security. Passwords are the most commonly used means of authentication because they are simple yet effective. Password security is the cornerstone of cybersecurity and plays a fundamental role in safeguarding the information security of individuals and organizations. However, with the increasing frequency and complexity of cyberattacks, traditional password hashing algorithms like ...

   BCRYPT,SECURITY     2023-11-15 08:14:35

  The Strange Behavior of the void Type in TypeScript

Preface In TypeScript (TS), there is a type called void. It represents "nothing" but it's important to note that it's not the same as "nothing" in JavaScript(JS). Typically, void is used to declare the return type of functions. Although you can declare a variable as void, we generally don't do this because it serves no meaningful purpose. Let's explore why in the examples below. The void Type Declaring a Variable as void let name: void; // Declare a variable `name` with type `void`. name = 'nan...

   TYPESCRIPT,JAVASCRIPT,VOID,TYPE     2024-09-13 23:44:26

  template function in class in C++

We can define template function in a class, but one thing we should pay attention to is that the member function template definition (in addition to the declaration) should be in the header file, not the cpp, though it does not have to be in the body of the class declaration itself.Example //Sorter.h#pragma onceclass Sorter{public:    Sorter(void);    ~Sorter(void);    template <class type> static void qsort(type arr[],int start,int end);};templ...

   C++,template function,class,definition,d     2011-08-07 09:39:56

  Data type in MySQL

For both small free database space and large e-commerce websites, reasonable database table structure design is essential. To achieve this, it requires us to have a full understanding of commonly used data types in database system. Below we share some knowledge about data types in MySQL.1. Numeric typesThe numeric types can be classified as : integer, float and decimal type.The so-called "decimal" refers DECIMAL and NUMERIC, they are of the same type. Strictly speaking it is not a numeric type, ...

   MySQL, Data type,VARCHAR     2013-01-01 10:56:06

  Build a Kubectl Plugin from Scratch

by author The command-line tool kubectl is indispensable when using Kubernetes. You need it to query related Pod and Service information both in developing or performing some maintenance operations, such as events, scale, rolling update, etc. However, when using kubectl, there are many inconveniences. Though Kubernetes is officially maintaining kubectl¹, and you can submit the problems, improvement, and even PR in its Github Issues, you still have to wait long before its release. The m...

   KUBENETES,KUBECTL,PLUGIN,GOLANG     2020-12-02 03:43:16

  Steps to connect to MySQL on Windows Command Line

To connect to MySQL database on Windows through Command line, there are some steps to be followed.1. You need to start the MySQL service, you can go to Start->Control Panel->System and Securities->Administrative Tools->Component Service->Services(local), then on the right panel, you can find one service name called MySQL and you should start this service2. Go the the MySQL installation folder, which is something like this : C:\Program Files\MySQL\MySQL Server 5.1. In this folder, ...

   MySQL,Window,Command line,Connection,mysqld     2011-11-05 08:22:39

  Let browser prompt for storing password when doing AJAX login

In Web 2.0 era, more and more web applications are using AJAX to replace the traditional HTML form element to perform user login. This usually provides a better user experience than form submission. But it also brings a side effect to the end users. That is the browser will not prompt the user whether s/he wants to save the password so that s/he no needs to enter the username/password again when visiting the same site next time. Below is the code snippet which does the AJAX login.  <scri...

   AJAX,Browser,Login,Password     2015-06-04 10:02:46

  Time to think about supporting max/min functions for integers in GoLang

Sometime back we wrote a post explaining why there is no max/min function support for integers in GoLang, one of the reasons is that no overloading is supported and the function name has been used for other numeric types float64. To solve this problem and make max/min function support integer as well, either GoLang should support overloading like in Java or the same set of functions need to be created in a different package other than standard math. These don't look like good options as overload...

   MIN,MAX,GENERICS,GOLANG     2021-07-24 03:14:42

  Go 1.16 is released

Note: The post is authorized by original author to republish on our site. Original author is Stefanie Lai who is currently a Spotify engineer and lives in Stockholm, original post is published here. Last week, Go1.16 was released, bringing relatively more changes than version 1.15, which was influenced by the epidemic. The update is in many aspects, including compilation, deployment, standard library, etc. In the official Go document, all changes are classified based on Too...

   GOLANG,GO1.16,NEW FEATURES     2021-02-26 21:08:42

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