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1. Obtain Kafka download Latest version, unzip $ tar -xzf kafka_2.13-3.0.0.tgz $ cd kafka_2.13-3.0.0 2. Start Kafka environment Run the following command in order to start the services correctly in order # Start the ZooKeeper service # Note: Soon, ZooKeeper will no longer be required by Apache Kafka. $ bin/zookeeper-server-start.sh co ...

catalogue 1, Listener introduction Listener introduction What is a listener Related concepts of monitoring mechanism           Introduction to web listener 2, Listen to the lifecycle of domain objects Implementation steps 1. Create a listener and implement the listener interface 2. Add listener information 3 ...

1, SPI (serial peripheral interface) 1.1 definition of SPI SPI (Serial Peripheral Interface) is the Serial Peripheral Interface. SPI is a high-speed, full duplex, synchronous communication bus, and only occupies four wires on the pins of the chip, saving the pins of the chip. SPI is a ring bus structure, which is composed of ss(cs), sck, ...

Download and configuration tutorial of MySQL installation free version There is a previous version of this blog. If readers are still interested in the author's previous version of the blog, you can visit this link: https://blog.csdn.net/wangpaiblog/article/details/111938395 [description] This tutorial describes the download and conf ...

1. Introduction Elasticsearch introduces the Cross Cluster Search (CCS Cross Cluster Search) function in version 5.3 to replace the cube node to be discarded. Similar to triple node, Cross Cluster Search is used to realize cross cluster data search. Cross Cluster Search enables you to run a single search request against one or more remote clus ...

1, Mybatis quick start 1.1 introduction to mybatis MyBatis is an excellent persistence layer framework that supports common SQL queries, stored procedures and advanced mapping. MyBatis eliminates almost all the manual setting of JDBC code and parameters and the retrieval encapsulation of result sets. MyBatis can use simple XML or annotation ...

Classification and positioning Locating the object in the picture can be represented as a regression task: predicting the boundary box around the object. A common method is to predict the horizontal and vertical coordinates of the center of the object, as well as its height and width. This means that there are four numbers to predict. It does n ...

Alicloud official image station:https://developer.aliyun.com/mirror/?utm_content=g_1000303593Introduction: Manjaro is a free and open source distribution based on arch Linux. It absorbs the excellent and rich software management of arch Linux and provides a stable and smooth operation experience.1, Manjaro first experienceManjaro is a free and ...

1, I2C introduction 1. IC2 introduction I2C communication protocol (Inter Integrated Circuit) is developed by Phiilps company. It has the advantages of few pins, simple hardware implementation, strong scalability and no need for external transceiver equipment of USART, CAN and other communication protocols. The connection mode of I2C on ...

  I haven't finished my work for a long time, tiezi. Recently, I saw a picture in a website called Meibao. Um ~ you know, hehe hehe Don't ask why the subsequent pictures are coded. If you don't code, you can't pass the examination, brother   Meibao.com - beauty photo, beauty model private house photo network (abwzhuan.com)http://www ...