Network programming learning summary

Network programming 1. Basic concepts of network programming 1. What is computer network The computers distributed in different geographical regions and special external equipment are interconnected by communication lines to form a large-scale and powerful network system, so that many computers can easily transfer information to each other ...

Posted by mhoard8110 on Fri, 29 Apr 2022 05:34:47 +0300

Thoughts on controller and filter

catalogue 1, Difference between filter and controller? 2, What is the relationship between the URL pattern of the filter and the controller? 3, What is the role of using wildcards in URL pattern when configuring filters? 4, The listener in this example is essentially monitoring what event in the container causes the change of what object? ...

Posted by blargalarg on Thu, 28 Apr 2022 18:45:33 +0300

Data deduplication using Redis

preface A previous article mentioned that incremental crawlers can use redis database for url de duplication. Today, bloggers will share with you how python uses redis for de duplication. In the experiment, we use redis database and hash algorithm. Let's learn about redis and hashlib first. Introduction to Redis Redis is completely open sour ...

Posted by rbudj on Thu, 28 Apr 2022 09:56:40 +0300

Interviewer: young man, tell me about the java object creation and Spring Bean life cycle

Understand the relationship between objects and beans java is an object-oriented language. In short, everything is an object. Bean is naturally an object, but it is an object managed by bean factory. How are java objects created When writing code, we usually use the following statement to create an object: A a=new A(); So what happens in the ...

Posted by Lexas on Wed, 27 Apr 2022 11:19:22 +0300

Spring cloud service Gateway

preface SpringCloud is the leader in micro services and the best landing scheme. Spring Cloud Gateway is a new gateway framework launched by Spring Cloud, formerly Netflix Zuul. Gateways are usually used in projects to simplify The front-end call logic also simplifies the complexity of calling each other between internal services; The specif ...

Posted by webster08 on Wed, 27 Apr 2022 06:53:15 +0300

Getting started with SpringCloud microservices

Getting started with SpringCloud microservices Getting to know spring cloudEureka registryHelloWorld 1. Get to know spring cloud 1.1 INTRODUCTION: springCloud is a complete set of framework for implementing microservices based on SpringBoot. Because it is not a component, but a collection of many components. It provides configuration manage ...

Posted by hammerslane on Wed, 27 Apr 2022 06:20:27 +0300

Three features of Java interview -- starting with a spicy hot from Xiaomei's classmate

Have you ever wondered why an interviewer should ask about the three features of Java? Because the interviewer knows what is the good taste "spicy hot". catalogue 1. The story of Xiaomei and Malatang 2. Scene technology implementation 2.1 final effect drawing 2.2 source code 3. Looking back at technology 3.1 packaging 3 ...

Posted by CerealBH on Wed, 27 Apr 2022 04:36:05 +0300

SpringCloud message BUS

In this article, let's introduce the message BUS in spring cloud. 1, What is message bus SpringCloud Bus integrates the message middleware (rabbit, MQ, Kafka, etc.) commonly used in the market to connect all nodes in the micro service system. When there is data change, it can notify the micro service to change the data in time through message ...

Posted by slands10 on Wed, 27 Apr 2022 04:28:09 +0300

Link tracking Sleuth of spring cloud

preface SpringCloud is the leader in micro services and the best landing scheme. In a complete microservice architecture project, the invocation between services is very complex. When one of the services has a problem or access timeout, it is very difficult It is difficult to directly determine which service caused it, so there is Spring Clo ...

Posted by carmasha on Wed, 27 Apr 2022 04:14:07 +0300

Spring security: configuration and front and back end scenario application

Spring security: configuration and front and back end scenario application catalogueSpring security: configuration and front and back end scenario application1 safety introduction2 know Spring Security3 certification and authorization3.1 Demo3.2 configuration description3.3 configuring users3.4 configure permissions3.5 experience4 connect to th ...

Posted by Fakcon on Tue, 26 Apr 2022 11:09:47 +0300