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Spring boot doesn't need much. It's an artifact that liberates both hands of Java development. The most remarkable feature is de configuration, automatic assembly and automatic configuration. Let developers only focus on business development Today, let's learn how to realize the source code of automatic assembly Prepare in advance Direct refe ...

About fault The causes of faults can be divided into the following categories: Network problems: network link problems and broadband congestion.Performance problems: slow database, SQL, Java full gc, excessive hard disk IO, high CPU, insufficient memory.Security issues: being attacked by networks, such as DDoS.Operation and maintenance issues ...

1, Overview In spark, many places involve network communication, such as message exchange between various components of spark, upload of user files and Jar packets, Shuffle process data transmission between nodes, copy and backup of Block data, etc. Spark1. Before 6, Spark Rpc was implemented based on Akka, which is an asynchronous message ...

Hello, guys. The last article - "look at my one code pass [series] from a technical perspective" simply analyzed the website information contained in the two-dimensional code after scanning one code pass. Today we continue. This article is mainly to pave the way for the in-depth explanation of cache in the next issue and prepare ...

Friendly tip: to download the source code for transformation, this paper is based on Sentinel-1.8.2. The following contents are extracted from personal technical documents, and relevant materials are mainly from spring cloud Alibaba and GitHub sentinel. The text is part of the excerpts for reference only. 4.1.2. Gateway flow control Gateway ...

Kafka cluster is composed of several brokers. Starting Kafka cluster is to start the brokers in the cluster and run normally. There are various interactions between brokers, between brokers and generators, and between brokers and consumers. The following is a brief introduction to the broker startup process. Script to start the broker: nohu ...

Shell script operates in the same way as interpretive language. If you have a language foundation, it is very easy to learn shell script. However, shell is different from common languages. Some common functions need to be realized by combining some commands in shell Tool recommendation The Shell does not seem to have a customized IDE. It is r ...

preface 10 wonderful Python libraries, I was stunned after reading! Let's start happily~ development tool Python version: 3.6.4 Related modules: socket module; textblob module; pygame module; pyqrcode module; pyshorteners module; Google trans module; pendulum module; fabulous module; pywebview module; Environment construction ...

Catalogue of series articles Porting Linux 0.0 GPIO operation from 11 to Hi3518EV200 development board preface By lighting the LED light through basic experiments, you can be familiar with some basic knowledge of the target hardware platform, such as memory address space range, how to configure multiplexing pins, how to operate GPIO, ho ...

Automatic login is a very common function in software development. For example, we log in to QQ email: In many websites, we will see similar options when logging in. After all, it is very troublesome to always let users enter their user name and password. The automatic login function is that after the user logs in successfully, if the use ...