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preface Learn the classic vulnerabilities of Apache Dubbo series CVE-2019-17564 0x01 version affected Dubbo 2.7.0 to 2.7.4 Dubbo 2.6.0 to 2.6.7 Dubbo all 2.5.x versions 0x02 environmental preparation https://github.com/apache/dubbo-samples/tree/master/dubbo-samples-http Download the source code, switch the Dubbo version in pom, and fi ...

At the beginning of this article, we will publish a series of articles to show you a go zero micro service example in detail. The whole series is divided into ten articles, and the directory structure is as follows:Environment construction (this article)Service splittingUser servicesProduct serviceOrder servicePayment servicesRPC service Auth a ...

Section 1 Dubbo dynamically generated classes When dubbo calls the exportServices() method, it will use code generation technology to dynamically generate the subclasses of Protocol$Adaptive, ProxyFactory$Adaptive and Wrapper. Dubbo uses javassist to dynamically generate classes. Dubbo has two scenarios using dynamic classes. 1)ExtensionLo ...

Spring Cloud microservice series articles Spring Cloud microservice (1) registry and configuration center -- Nacos Spring Cloud microservice (2) microservice Gateway -- Spring Cloud Gateway Spring Cloud microservice (3) declarative REST client -- Spring Cloud Feign preface This paper mainly introduces one of the communication methods betwe ...

Basic and Advanced Applications of Dubbo Load Balancing, Cluster Fault Tolerance, Service DegradationLocal stub, local disguise, asynchronous call load balancing Dubbo supports four strategies: polling Polling, set the polling rate according to the weight after the convention.There is a problem with slow providers accumulating requests, su ...

Get blockchain status Request address: https://localhost:8555/get_blockchain_state Parameter: {'': ''} Execution: curl --insecure --cert ~/.chia/mainnet/config/ssl/full_node/private_full_node.crt --key ~/.chia/mainnet/config/ssl/full_node/private_full_node.key -d '{"":""}' -H "Content-Type: application/json" -X POST https://localhost:8555/g ...

Implement an RPC framework by hand 1, Introduction to RPC pre knowledge 1. What is RPC? RPC is an abbreviation for Remote Procedure Call. Suppose we have two servers A and B. an application deployed on server A wants to call the functions and methods of the application deployed on server B. because they are not in the same memory space, the ...

preface In distributed systems, registry plays an important role and is an indispensable member of service discovery and client load balancing. In addition to the basic functions of the registry, its stability, availability and robustness have a significant impact on the smooth operation of the whole distributed system. As a mainstream distrib ...

preface Detailed explanation of Eureka 1.1 detailed explanation of Eureka 1 1.2 detailed explanation of Eureka 2Code demo - stand alone Eureka registry ring 2.1 code Demonstration - Eureka service registration 2.2 Eureka's self-protection mechanism (service discovery mechanism for team cooperation))Eureka cluster environment configurationEurek ...

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 ...