Hadoop in simple terms -- getting started

Hadoop learning 1.Hadoop overview Infrastructure of a distributed systemIt mainly solves the problems of massive data storage and distributed computing 1.1 three major releases of Hadoop The original version of Apache was released in 2006Cloudera integrates many big data frameworks internally, and the corresponding product is CDH releas ...

Added by birwin on Wed, 23 Feb 2022 18:37:40 +0200

[easily understand design mode] after reading the decorator mode of take-off

I'm < font color = #2941c0 > "kangarooking" < / font >, not my brother's brother. An Internet worm "gua" cow will climb up step by step with you. One day there will be a day for us. Pay attention to me and make a little progress every day ❗ ❗ ❗prefaceThe experience of learning design mode mentioned in the article ...

Added by jayskates on Mon, 14 Feb 2022 01:23:52 +0200

Microservices have everything from code to k8s deployment (III. authentication)

We will use a series to explain the complete practice of microservices from requirements to online, from code to k8s deployment, from logging to monitoring. The whole project uses the micro services developed by go zero, which basically includes go zero and some middleware developed by relevant go zero authors. The technology stack used is basi ...

Added by ambo on Fri, 11 Feb 2022 16:07:27 +0200

Obtain openId from Weixin Java MP (Weixin java tools) to realize Spring Boot 2.0 integration from zero for wechat authorization

** Steps:** 1, * intranet penetration application for secondary domain name (those with server and domain name can be omitted)* 2, * apply for wechat public platform test number * (those with * certified * wechat service number can skip)** 3, Build Spring Boot 2.0 project to obtain openId 1, Intranet penetration: Because it is necessary to ...

Added by Canabalooza on Fri, 11 Feb 2022 05:34:33 +0200

mybatis04 -- developing with annotations

1 review - Interface oriented programming Root cause: decoupling, expandable, improved reuse. In layered development, the upper layer does not care about the specific implementation. Everyone abides by common standards, making the development easier and more standardized. The cooperative relationship between various objects has become the key ...

Added by deezin on Thu, 10 Feb 2022 07:31:52 +0200

Take you ten days to easily finish the finale of Go micro service (Distributed Transaction)

preface We will show you a go zero micro service example in detail through a series of articles. The whole series is divided into ten articles, and the directory structure is as follows: Environment constructionService splittingUser servicesProduct serviceOrder servicePayment servicesRPC service Auth authenticationService monitoringLink track ...

Added by VanPEP on Wed, 09 Feb 2022 06:43:58 +0200

OKHttp source code analysis

Okhttp is a commonly used network framework. Okhttp is developed by square company. It is necessary to master the usage of okhttp and its internal working principle. 1, Introduction mode   1.gradle introduction   implementation 'com.squareup.okhttp3:okhttp:3.14.7' implementation 'com.squareup.okio:okio:1.17.5' 2. Authority <use ...

Added by Thoughtless on Tue, 08 Feb 2022 02:57:03 +0200

Android R(11) adds the death recipients callback of HIDL service for the client

Generally, the caller (client) of HIDL service is not in the same process with it. HIDL service generally provides hardware functions, and the caller (client) realizes characteristic functions based on this hardware function. Here, it is assumed that HIDL light service only provides the hardware function to control the on and off of specific LE ...

Added by michaelnorth on Sat, 05 Feb 2022 12:22:31 +0200

Fundamentals of java reflection mechanism

Reflection overview Reflection is that for any Class, you can directly get all the components of this Class "at run time". At runtime, you can directly get the Constructor object of this class: Constructor At runtime, you can directly get the member variable object of this class: Field At runtime, you can directly get the member ...

Added by BornForCode on Sat, 05 Feb 2022 10:19:28 +0200

Entitas learning [1] Hello World

ECS is a data oriented programming idea. Entitas is an excellent framework under this idea. It is written according to the rules of the framework. When the program scale is relatively large, it is also easy to expand and maintain the code. It is suitable for people who are object-oriented programming but are not familiar with design patterns an ...

Added by gtanzer on Fri, 04 Feb 2022 03:33:29 +0200