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Warm tip: This is the "Pulsar fool's Manual", with zero experience, small white pit lightning protection. As long as you follow the instructions, the success rate is 100%!This article is the second in the Pulsar isolation strategy series. The first blog in this series -   "How to realize isolation in Pulsar by deep resolutio ...

Java 15 was released in September 2020. Although it is not a long-term supported version, it also brings 14 new functions, many of which are very practical. Java 15 official download: https://jdk.java.net/archive/ Java 15 official documentation: https://openjdk.java.net/projects/jdk/15/ New Java 15 features: JEPdescribeJEP 339Edwards curv ...

1: Introduction If the reliability of the message is guaranteed? The following problems need to be solved Question 1: the producer can send 100% messages to the message queue! Two unexpected situations: First, the consumer fails to send a message to MQ, and the message is lost; Second, the switch fails to route to the queue, and the routin ...

1, Background introductionThere are many split services in the distributed system. In the process of continuous iterative upgrading, the following common thorny situations will occur:For the version upgrade of a technical component, depending on the package upgrade leads to the expiration of some syntax or API, or the component fixes urgent vul ...

1, Foreword To understand the registration mechanism, first we need to have a certain understanding of function pointers and callback functions. My previous blog has explained in detail: Detailed explanation of C language callback function (the most complete in the whole network) 2, Registration mechanism 1. Problem description In the ...

1. Process and memory management Kernel functions: process management, memory management, file system, network function, driver, security function, etc 1.1 what is a process Process: a copy of a running program, a collection of instructions loaded into memory, and a unit of resource allocation The Process ID (PID) number is used to mark ea ...

Book constructor The Book object is divided into two scenarios: Parse the Book object directly from the e-Book fileGenerate Book object from data object class Book { constructor(file, data) { if (file) { this.createBookFromFile(file) } else { this.createBookFromData(data) } } createBookFromFile(file) { cons ...

article You can find the starting address here , master the latest knowledge in one step!Write in frontWebpack can be regarded as a mainstay in the front-end construction tools. It can appear in any scene, such as daily business development, front-end infrastructure tools, advanced front-end interviews, etc.You may be confused about its interna ...

Today, I will continue to introduce you to the basic knowledge of Linux. The main content of this article is the master-slave configuration of DNS. To read this article, you need to have a certain DNS foundation. If you are still confused about this, please refer to the following articles: Detailed explanation of Linux DNS Service -- basic know ...

[1] The first maven we want to create is a webapp project, not a regular java project [2] pom's import jar package doesn't waste words here [3] We need to know where SpringMVC is in the triple architecture, so let's take a look at a diagram                   You can see our SpringMVC, which is really ...