Tag：Overall situation
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Time：2021-10-25
What is TCC? TCC is the abbreviation of try, confirm and cancel. It was first proposed by a paper entitled life beyond distributed transactions: an apostate’s opinion published by Pat helland in 2007. TCC composition TCC is divided into three stages Try phase: try to execute, complete all business checks (consistency), and reserve necessary business […]
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Time：2021-10-25
function Global command line tool, which can rename files in batches. It supports removing the character with – min in the file name or adding – min to the file Configure globally available commands Use the bin attribute of NPM package and declare the executable file to start the command in the entry fileAdd the […]
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Time：2021-10-22
catalogue preface Scope 1. What is scope 2. Global scope and function scope 3. Block level scope Scope chain 1. What is a free variable 2. What is scope chain 3. Values of free variables Scope and execution context Interpretation stage: Execution phase: Postscript preface There is a feature in JavaScript called scope. Although the […]
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Time：2021-10-21
Introduction to scaffold Scaffolding is essentially a client of the operating system, which executes through commands, such as:vue create vue-test-appThe command above consists of three parts: Main command:vue command： create Param of command:vue-test-app It means to create a Vue project namedvue-test-app, the above is a relatively simple scaffold command, but the actual scene is often […]
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Time：2021-10-21
With the large-scale application of microservices, there are more and more distributed transactions across microservices. What is the performance of distributed transactions? How much performance will be reduced? Can it meet business needs? These indicators are very concerned about whether distributed transactions can be successfully introduced into production applications. This paper attempts to deeply analyze […]
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Time：2021-10-18
For you who are new to using nestj as a project (three articles: writing API & uploading pictures) Module 1. Like we wrote beforeuserController for(controller)And services(service)In fact, they should be regarded as a whole. For example, they should be introduced somewhereuserRelated operations, direct introductionUser’s moduleOK, let’s start from scratchmoduleTry it. nest g module modules/users nest […]
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Time：2021-10-10
staySpringBootProject direct useokhttp、httpClientperhapsRestTemplatelaunchHTTPRequest is cumbersome and inconvenient for unified management. Therefore, a suitable forSpringBootProject’s lightweight HTTP client frameworkretrofit-spring-boot-starter, it is very simple and convenient to use, and provides many function enhancements at the same time. The project has been updated to2.2.2Version, and iterative optimization will continue. Project address:https://github.com/LianjiaTech/retrofit-spring-boot-starter preface RetrofitIs applicable toAndroidandJavaThe biggest feature of […]
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Time：2021-10-10
Continued:Dynamic relus: adaptive parameterized relu (parameter adjustment record 5) Adaptive parameterized relu is a dynamic relu (dynamic relu), submitted to IEEE Transactions on industrial electronics on May 3, 2019 and hired on January 24, 2020,Published on IEEE official website on February 13, 2020。 This paper continues to adjust the super parameters and test the effect […]
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Time：2021-10-8
Nesting mode 1. Gloablely Once registered, the global component is used a. Create a test.vue file in the SRC folder: <template> <ul> <li v-for=”name in names”>{{ name }}</li> </ul> </template> <script> export default { data () { return { names: [‘Rachel’, ‘Ross’, ‘Emma’] } } } </script> <style> </style> b. Inmain.jsIn the file, register the […]
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Time：2021-10-8
reflection When you think about global sorting, do you first think of collecting data from the map side, shuffling to reduce, setting a reduce, and then sorting the data in the reduce? Obviously, this is no different from a single machine. You know that the MapReduce framework sorts the keys by default. However, you can […]
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Time：2021-10-6
Installation tutorial under Windows Download node. The address is herenodejs By default, everyone is a Windows 64 bit system ! 1. Fool installation tutorial confirmation2.Open CMD input after installationnode -vandnpm -vView version 3.Configure the path of NPM when installing the global module and the path of cacheBecause when executing commands such as NPM install webpack […]
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Time：2021-10-5
1、 What is block? Block Is an object that encapsulates a function and its execution context.For example: adoptclang -rewrite-objc WYTest.m Command to compile the.mFile, found theblock Compiled into this form: amongWYTest Is the file name,blockTest Is the method name, which can be ignored. amongWYTest blockTest_block_impl_0 The structure is –block_impl The structure is blockInternal isaPointer, so its essence is alsoOC object block The […]
