Published: Apr 21, 2019 Tags: booknotes, process Category: Engineering This blog is the book notes for user story applied. User stories principles A good story is: Independent, Negotiable, Valuable to users or customers, Estimable, Small, Testable User stories emphasize verbal rather than written communication User …

Published: Apr 20, 2019 Tags: cloud, telemetry Category: Engineering This blog introduces what Application Insight can do. Application Insight Basics Application Insights is aimed at the development team, to help you understand how your app is performing and how it's being used. It includes functions: Detect, triage, …

Published: April 19, 2019 Tags: security, cloud Category: Engineering Cyber Security is important aspect to digital transformation. To use Azure well, the understanding of the security building blocks is crucial. https://docs.microsoft.com/en-us/azure/security/azure-security-getting-started Security Basics Every …

Published: Feb 10, 2019 Tags: iot, booknotes, smartcity Category: Engineering Smart cities: Everyone's connected If everyone, every home, and every business is connected via the IoT, why not take the next step and connect your entire neighborhood, or even the whole city? Connected devices can help reduce congestion on …

Published: Jan 13, 2019 Tags: ai Category: Engineering This blog introduces the basic knowledge of machine learning. The details of algorithm and programming will come in later blogs. Machine learning is a technology which can resolve the computational problem without programming specifically. Process Machine learning …

Published: Dec 07, 2018 Tags: ai, smartcity Category: Engineering I had the honer to give an 'AI for Smart Cities' presentation in 'Big Data & AI Asia' conference Dec 5. The conference was hold in Suntec and it was a big event around hundreds people participated. I managed to convey the following messages in my talk: …

Published: Aug 11, 2018 Tags: web, backend Category: Engineering Recently, I used Node.js quite a lot to handle personal projects. It is easy to start, and also easy to get wrong. This blog covers the basics part of Node.js development. Module Require Every module in node is singleton. Use require to use module, the …

Published: Mar 14, 2018 Tags: security Category: Engineering Authentication and Authorization are two relevant but different concepts, which causes confusion sometimes. Both of them are important for SaaS solution. This blog explains the basic of these two concepts. Single sign on In classic intranet scenarios, …

Published: Mar 07, 2018 Tags: architecture, cloud Category: Engineering Microservice is a software architecture style, in which complex applications are composed of small, autonomous process communicating with each other using language-agnostic API, which is a very common cloud pattern. Microservices Design Principles …

Published: Feb 26, 2018 Tags: blockchain, security Category: Engineering This blog explain the potential scenarios of blockchain usage. The content comes from good articles on web. 分布式数字货币系统 现实生活中常用的纸币具备良好的可转移性，可以相对容易地完成价值的交割。 但是对于数字货币来说，数字化内容容易被复制，数字货币的持有人可以将同一份货币发给多个接受者，这种攻击称为“双重支付攻击”。 中心化控制下，数字货币的实现相对容易。 但是，很多时候很难找到 …