Programmer Group

#1, User name + password + jwt authentication to achieve login authentication The following are some codes of VUE front-end login interface <div class="inp" v-if="login_type==0"> <input v-model="username" type="text" placeholder="user name / phone number" class="user"> <input v-model="password" type="pass ...

Factory Pattern sketch There are three types of factory modes. 1. Simple factory mode. 2. Factory method mode. 3. Abstract factory pattern. Principles and ideas of design Encapsulate the creation of objects in factory classes to decouple the creation and use of objects. Product hierarchy and product family Product hierarchy : ...

1, BackgroundThe Stream type is a new type after redis5. In this article, we use Spring boot data redis to consume the data in Redis Stream. Realize independent consumption and consumption group consumption.2, Integration steps1. Import jar package<dependencies> <dependency> <groupId>org.springframework.boot</groupId& ...

https://labuladong.gitee.io/algo/4/32/135/   After reading this article, you can not only learn the algorithm routine, but also win the following topics on LeetCode: 20. Valid parentheses (simple) 921. Minimum addition to make parentheses valid (medium) 1541. Minimum insertion of balanced bracket string (medium) -—– Judge legal bracket string T ...

Let's sort out our ideas first, and then write the mine sweeping code. In this way, we can write the code efficiently 1. First of all, play the game with at least one interface! The interface allows people to choose whether to play the game or quit, or continue to play after playing the game 2. Initialize array 3. Print chessboard 4. Number ...

Note: the note is about the implementation of page replacement algorithm by fengsigaoju boss( (35 messages) java implements the page replacement algorithm (OPT,FIFO,LRU) _fengsigaoju's blog - CSDN blog _pagereplacement algorithm code java )Learning, invasion and deletion. I have been learning JAVA for one month. If there are any deficiencies, ...

1, Container When you first understand containers, you can think of containers as libraries that provide a series of specific functions. 2, Common containers STL Classification of standard template library: Sequence container: vector: Vector container list : List container deque : Dual ended queue ...

1. Connect to Neo4j database To operate Neo4j through python, you first need to install py2neo, which can be installed directly using pip. pip install py2neo After installation, open pycharm and call py2neo from py2neo import Graph,Node,Relationship test_graph = Graph ( "http://localhost:7474", username="neo4j", password="neo4j" ...

  1, Background Technology stack: Redis+Lua Double eleven is a festival that belongs to e-commerce rather than operators. However, goose has no choice but to be on duty. After zero, the flow of the payment system rises for half an hour, and then it runs stably. With a serious and responsible attitude, I'd better stick to it all night. I ...

reflex 1. Class loader 1.1 loading of class When a program wants to use a class, if the class has not been loaded into memory, the system will initialize the class through three steps: loading, connecting and initialization. load This is to read the class file into memory and create a class object for it. When any Class is used, the sy ...