Microservice - call of service

typora-copy-images-to: imgs Call between microservices 1. Call of microservice - Ribbon + resttemplate (independent component) 1. What makes Ribbon Ribbon is a client-side load balancer, which is used to call the load balancing of microservices between spring cloud 2. Load balancing between se ...

Added by PcGeniusProductions on Fri, 26 Jun 2020 09:14:44 +0300

The principle and use of SEL

concept SEL: method name (number)IMP: a function pointer that holds the address of the method@Selector (method name) gets the number of the method, resulting in SEL type. His behavior is basically equivalent to the function pointer in C languagedifference In C language, the function name can be assigned directly to a function pointer, and the f ...

Added by rinjani on Fri, 26 Jun 2020 06:08:56 +0300

Basic method of data mining - probability and Statistics - 3. Common distribution and hypothesis test

1.1 common distribution distribution Probability or probability density Mean E(X) Variance D(X) Binomial distribution P(X=x)=Cnxpxqn−x P(X=x) = C_n^x p^x q^{n-x} P(X=x)=Cnx​pxqn−x npnpnp np(1−p)np(1-p)np(1−p) Poisson distribution P{X=i}=e−λλii! P\lbrace X= i \rbrace = e^{-λ} \frac{λ^i}{i!} P{ ...

Added by veluit06 on Fri, 26 Jun 2020 05:41:14 +0300

The Ultimate Perfect Shopping Cart System Reveals--MVC Design Mode

Simple Shopping System People often go online to get enough, so the so-called shopping cart on the Internet should not be unfamiliar, so today we use the MVC design mode of javaweb to implement a case of online shopping system. The results are as follows:   A brief introduction to the three-tier architecture 1. Development Steps ...

Added by NogDog on Fri, 26 Jun 2020 04:41:02 +0300

How to Design a Privilege Authorization Service in Microservices

Role-based access control (RBAC) One way to restrict system access to authorized users is to define policy-independent access control mechanisms around roles and privileges, and the components of RBAC make it easy to perform user assignments. Within the organization, various jobs will be created role .Permissions to perform certain actions ha ...

Added by fordyh on Fri, 26 Jun 2020 04:14:55 +0300

TypeScript self study - Chapter 4: classes

class Let's see the use of classes class Greeter { greeting: string; constructor(message: string) { this.greeting = message; } greet() { return "Hello, " + this.greeting; } } let greeter = new Greeter("world"); There are three parts: a property called greeting, a constructor, and a greet method. inherit class Animal { ...

Added by ronald29x on Thu, 25 Jun 2020 15:20:30 +0300

nextTick's practice in the project

preface In a project, it is often necessary to display data at the view level immediately. Sometimes, because of asynchronous data transfer, the page will not be displayed immediately on the page. In this case, you need to use the nextTick method provided by Vue. The main reason is that Vue's data vi ...

Added by ivki on Thu, 25 Jun 2020 14:18:22 +0300

Redis from entry to mastery (VIII. Redis cluster)

This article introduces the Redis Cluster cluster, and briefly introduces the implementation of the cluster. It is mainly a specific practical part: cluster startup, failover, adding nodes, removing nodes Basic concepts of Redis cluster Redis's cluster mode provides data fragmentation and ensures the availability of each partition. Each node of ...

Added by jdorsch on Thu, 25 Jun 2020 14:10:22 +0300

Fundamentals of Java EasyExcel - Reading

preface Always believe that good things are about to happen background Some time ago, I encountered such a problem when crawling the website data. There is a data source. Because of the large amount of data, it is not displayed on the page, only a download button is provided. Now it is necessar ...

Added by pipe_girl on Thu, 25 Jun 2020 13:20:40 +0300

Five minute experience of distributed transaction framework Seata

seata is an open source distributed transaction solution dedicated to providing high-performance and easy-to-use distributed transaction services. seata will provide users with AT, TCC, SAGA and XA transaction modes, and build a one-stop distributed solution for users. The purpose of this tutorial is to provide a quick start to the case of seat ...

Added by Cogen on Thu, 25 Jun 2020 07:25:46 +0300