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The Strategy design pattern is based on the Open/Closed design principle , the famous " O SOLID " of design principles . It is one of the patterns that has become popular in the field of object-oriented analysis and design, along with the D...

Hi guys, if you are preparing for Java interview and looking for difference between Proxy and State design pattern, then you are at the right place. In the past, I have explained several important object-oriented design patterns like State,...

Hi everyone, you might have heard, “Can you tell me about any design pattern other than Singleton design pattern that you have used recently in your project?”. This is one of the popular questions in various Java interviews in recent ye...

Today, we are going to learn one of the most useful patterns, the Visitor Pattern. What is the Visitor pattern? Well, let's look at an example. Let's say you're a software engineer working at a university. The university rarely has establis...

I have previously written about the introduction to merge sort, The Path to Learning Sorting Algorithms - Merge Sort . It has been a long time since then. Now I will reorganize it and talk about merge sort in detail from the code level. Mer...

First, I will dig out the pits I encountered in the project. In our project, there is such a requirement that the user's ID number cannot be stored in plain text when it is stored in the database. In view of such a requirement, it is natura...

The single responsibility principle is the simplest principle in object-oriented design. The so-called single responsibility, to put it simply, is that a class is responsible for only one function. The single responsibility principle is def...

In a distributed system, a core issue is data consistency. Therefore, the consistency algorithm is of utmost importance in a distributed system. The Paxos algorithm is designed to solve the consistency problem, but it has always been consid...

Memcached is known as a high-performance distributed cache system. Speaking of distribution, Memcached is worth analyzing. Its distribution mechanism is different from that of general distributed service systems. In distributed service syst...

When designing a distributed system architecture, in order to improve the system's load capacity, different data needs to be distributed to different service nodes. Therefore, a distribution mechanism is needed, which is actually an algorit...

This article shares with you the application of a small algorithm - finding the common prefix of a string array: array ( 'abcdefg' , 'abcdfio' , 'abcdqle' ) In the above array string, the common prefix is ​​'abcd'. The first thing that...

In the article "Radix Sort (LSD)" , we explained the concept and efficiency analysis of radix sort. We will not repeat it in this article. You can refer to that article to get a general understanding of the idea of ​​radix sort. Next, w...

Radix Sort : It is a non-comparative integer sorting algorithm. The basic principle of radix sorting is to group integers according to the number of digits in the integer. In the grouping process, the missing digits are filled with 0. Accor...

In the article "Common Sorting Algorithms", we briefly introduced the ideas and implementation steps of various sorting algorithms. In this article, I will share the core codes of these sorting algorithms with you. The complete code of all...

What is "insertion sort"? The concept is as follows: each time a record to be sorted is inserted into the previously sorted sequence according to its key size, until all records are inserted. Concepts are always somewhat abstract, and can a...