Using JD cloud Serverless service to quickly build IoT application in 5G Era

On October 31, at the 2019 China International Information and Communication Exhibition, the Ministry of industry and information technology announced that 5G business was officially launched. 5G business age is coming! The commercial application of 5G makes the data transmission speed, response speed, connection data, data transmission volu ...

Posted by ramez_sever on Tue, 14 Jan 2020 19:11:58 -0800

How to Deeply Understand the Implementation Mechanism of EKS IAM Authenticator

1. k8s Authentication We know that apiserver has the following authentication methods: X509 Client Certs Static Token File Bootstrap Tokens Static Password File Service Account Tokens OpenID Connect Tokens Webhook Token Authentication Authenticating Proxy Typically, we use a binary self-built k8s cluster, or a kubeadm-created cluster, the ad ...

Posted by jenp on Tue, 07 Jan 2020 09:40:10 -0800

Best practices for AWS IAM Role

I. EC2 For the application above EC2, do not assign User Credentials, use IAM Role Attachment.You can access the meatdata of EC2 to view the Role permission granted curl http://169.254.169.254/latest/meta-data/iam/security-credentials/ 2, Software on local laptop For users who develop and test on their own computers, users need access rights o ...

Posted by mitzleah on Fri, 27 Dec 2019 06:04:52 -0800

Details of VCF file format

VCF file is called Variant Call Format, which represents the variation information of genome, usually obtained by GATK and Samtools software. The VCF file can be roughly divided into two parts: 1. Header file information starting with ××× ##fileformat=VCFv4.2 ##FILTER=<ID=LowQual,Description="Low quality"> ##FORMAT= ...

Posted by kla0005 on Wed, 11 Dec 2019 00:31:01 -0800

amazon connect (call center)

background In order to improve the communication efficiency of customer service department, the company chose Amazon Connect service of Amazon after investigation, because Alibaba cloud was not selected for foreign business, so there was a hole. Amazon Connect background We need to create "contact flow" in the background, that is, ...

Posted by rusbb on Tue, 10 Dec 2019 13:37:28 -0800

AWS Athena analysis log

In AWS, Athena can be used to analyze the logs saved in S3. He can convert the logs into the format of database tables, so that they can be queried through sql statements. This function is similar to using logparser to analyze Exchange or IIS logs on a windows Server. Let's do a demonstration, record the management log through Cloudtrail, and ...

Posted by stubarny on Wed, 04 Dec 2019 09:10:56 -0800

The development of cnode website by dva

Complete registration logic and personal center page 1 reg component validation logic The same validation rules as login import React , { Component }from 'react'; import PropTypes from 'prop-types'; import { connect } from 'dva'; import { Form, Icon, Input, Button, Checkbox,message} from 'antd'; import { routerRedux } from 'dva/router'; const ...

Posted by RyanDev on Sat, 30 Nov 2019 16:58:12 -0800

Notes on the process of web assembly engineering development based on rule

Initialization project $ npm init rust-webpack web_assembly_demo npx: 18 Installation successful, time 3.989 second Rust + WebAssembly + Webpack = ️ Installed dependencies Install Web dependency $ yarn yarn install v1.19.1 warning package.json: No license field info No lockfile found. warning package-lock.json found. Your project contains lo ...

Posted by gmiyano on Mon, 25 Nov 2019 10:30:48 -0800

How to gracefully stop the spring boot service

Preface Often the pronoun for "stop service" is violence, regardless of the consequences, because when a forced stop occurs, it doesn't matter if there are any running threads in it. It happens that recently, because of the auto scalinng in AWS, unknown friends can interpret it as AWS can automatically expand or shrink our servers, wh ...

Posted by scopley on Sun, 17 Nov 2019 18:35:32 -0800

Powerful JSON.STRINGIFY optional parameters

A very interesting question is brewing in my mind. I'll share it with you so that you can refer to it when you have problems. Let's see what's interesting about JSON.stringify(). const dude = { name: "Pawel", friends: ["Dan", "Pedro", "Mr Gregory"] }; const dudeStringified = JSON.stringify(dude); console.log(dudeStringified); // {"name":"P ...

Posted by roby2411 on Mon, 21 Oct 2019 07:36:24 -0700