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Python WeChat Subscription Applet Course Video https://edu.csdn.net/course/detail/36074 Python Actual Quantitative Transaction Finance System https://edu.csdn.net/course/detail/35475 Environmental preparation vm virtual machine (self-installing Centos7 system)hadoop3.x Installation Package (linux version)java1.8 installation package (linux ...

1, Gateway service1. Gateway modeAs the outermost service of the architecture, the gateway is used to uniformly intercept requests from various ports, identify the legitimacy of requests, intercept abnormal actions, provide routing and load capacity, and protect business services; This strategy is similar to the appearance mode.The logic of Gat ...

1, Gateway service 1. Gateway mode As the outermost service of the architecture, the gateway is used to uniformly intercept requests from various ports, identify the legitimacy of requests, intercept abnormal actions, provide routing and load capacity, and protect business services; This strategy is similar to the appearance mode. The logi ...

1, Introduction to Seata Seata is an open source distributed transaction solution, which is committed to providing high-performance and easy-to-use distributed transaction services. Seata will provide users with AT, TCC, SAGA and XA transaction modes to create a one-stop distributed solution for users. 2, Software version Software edition ...

Python WeChat Subscription Applet Course Video https://edu.csdn.net/course/detail/36074 Python Actual Quantitative Transaction Finance System https://edu.csdn.net/course/detail/35475 CSS Cascading Style Sheet Three characteristics Cascade: The same style overrides Inheritance: Attributes can be inherited down Priority: The smaller the r ...

Last time we talked about Dubbo's service exposure, this time we'll look at how Dubbo calls services This article will be interpreted based on the architecture diagram of dubbo Catalog Client Start Process Dubbo Service Call Client Start Process As we all know, when a client invokes a service, only the interface has no corresponding ...

preface 1, synchronized and Volatile volatile Visibility can be guaranteed, but atomicity cannot be guaranteed (thread safety problem) Prohibit reordering synchronized Both visibility and atomicity can be guaranteed Reordering is not prohibited synchronized is blocking. Only one thread can access it at a time 2, Reorder Concept: the c ...

Role of a copy 1.Kafka replica function: improve data reliability. 2. The copy in Kafka is divided into Leader and Follower. Kafka producers will only send data to leaders, and then Follower will find leaders to synchronize data. The reading and writing is completed by the leader. The follower only backs up and synchronizes data with th ...

https://www.jianshu.com/p/a2bd89e0d24b If you want to do well, you must sharpen your tools first. Let's install relevant tools first jmeter I demonstrated it on mac, so I'll install brew first ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)" 2> /dev/null Using brew to install jmeter brew instal ...

1. Why integrate Nacos By default, Sentinel configuration rules are stored in memory. After the Sentinel service is re configured, the configuration will show that we realize the persistence of the configuration by integrating third-party middleware, such as using Nacos; To realize the bidirectional synchronous persistence of Sentinel and ...