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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& ...

1. Starter introduction Compared with spring, spring boot is much simpler in configuration. Its core lies in spring boot starter. When using spring boot to build a project, you only need to introduce the officially provided starter, which can be used directly without various configurations. Starter simply introduces some dependencies and initi ...

Second kill system based on SpringBoot, Redis and RabbitMQ The main problems solved by seckill system: concurrent reading and concurrent writing. The core optimization concept of concurrent reading is to minimize the number of users "reading" data from the server, or let them read less data; The processing principle of concurr ...

preface Based on the official spring documentation, the official address is: Spring Boot At present, the latest official version is: 2.5.6 (this series of study notes is basically based on translation, so don't waste time expecting to get more. It's more a note made to show yourself the official documents) Content of the current chapter: in ...

This article is translated from: Building Reusable Mock Modules with Spring Boot - ReflectoringIsn't it good to split the code base into loosely coupled modules, each with a set of special responsibilities?This means that we can easily find each responsibility in the code base to add or modify code. It also means that the code base is easy to m ...

springboot notes Reference from http://c.biancheng.net/spring_boot/ Parent project dependency management <!--SpringBoot Parent project dependency management,spring-boot-starter-parent Is all Spring Boot The parent dependency of the project, which is called Spring Boot The version arbitration center can uniformly manage some commo ...

    hbase is a member of hadoop ecology. To build hbase first, you need to install hadoop, then zookeeper, and then hbase. Now hbase can be installed directly through docker, and hadoop is not required in the container.     The installation is simple. Directly pull the image and run it. docker run -d --name hbase -p 2181 ...

This way to achieve code scanning login is too sweet!!! If you need more tutorials, just scan the code on wechat           1, First you need a table Record who scanned the code. Who logged in. User_Token table The fields are as follows: uuid: used to ensure uniqueness userId: who logged in loginTime: login time createTime: the c ...

Learning objectives Cross domain requestFile uploadMail processing Cross domain request 1. How to understand cross domain What is cross domain? Cross domain refers to the mutual access between different domain names, which is determined by the browser's homology policy. It is a security measure imposed by the browser on JavaScript to preve ...

Introduction to Canal canal [k] ə' Nl], meaning waterway/pipeline/ditch, primarily used for incremental log resolution based on MySQL databases, providing incremental data subscriptions and consumption Early Alibaba had the business requirement of synchronizing across computer rooms due to dual-room deployment in Hangzhou and the United States ...