By Shanlie, Alibaba Cloud Solution Architect

As reported by the “Research Report on Chinese Children’s Programming Industry” and the “Analysis and Forecast Report on Chinese Children’s Programming Market for 2017–2023”, programming among children is so promising that it is expected to reach up to RMB 50 billion within 3–5 years.

In today’s information age, artificial intelligence has brought many changes to society. Parents in the Internet era are different from parents of the previous generations. They pay more attention to children’s quality education and their competencies in artificial intelligence. Therefore, children’s programming education has developed rapidly.

Walnut Programming has taken…

By Matt Zand and Brian Wu

Due to the popularity of blockchain and decentralized finance, many applications that offer digital currencies like Bitcoin or Cryptocurrencies come with a feature called digital wallet. A wallet allows users to store and manage their private keys. A wallet is also used for key generation. Depending on the platform in which a user can access and manage their wallet, there are 4 types of wallets: web, desktop, mobile, and Hardware.

Another way to categorize wallets is based on the way in which keys are generated which includes deterministic and nondeterministic wallets. A non-deterministic wallet…

By Arman Ali

NGINX was created on 4 October 2004 by Russian developer Igor Sysoev as he was frustrated with Apache web server and wanted to build a replacement capable of handling 10,000 concurrent connections with a focus on performance, high concurrency, and low memory usages.

Now NGINX servers world’s top websites and while this growth is largely due to, it’s also because NGINX is relatively easy to get started with.

There are two methods of installing NGINX on Ubuntu 20.04.

1. Via the operating system’s build-in packages manager.
2. Via building NGINX from the source.

In this guide, we’ll build NGINX…

Preface

When talking about methodology, Xiang, a technology expert of AMAP said, “Complicated problems should be simplified while the simple ones should be deepened.”

This statement deeply touched me, and I believe it also applies to writing code. In other words, after splitting a complex logic into lots of simple logic, and then implementing each simple logic in-depth, the simple logic is integrated into complex logic. The quote above can be summed up as, “changing complexity into simplicity, from simplicity to complexity.”

Writing Java unit testing cases simplifies complex problems, breaking down a complex piece of code into a series of…

By Tang Bingchang (Changpu)

With the rapid development of edge computing, more data needs to be stored, processed, and analyzed at the edge of the network. Devices and applications on the edge are growing rapidly. Managing the resources and applications efficiently on the edge has become a major challenge in the industry. Currently, the cloud-edge-end unification architecture has gained wide recognition in the industry. In this architecture, the cloud computing capability is delivered to the edge in a cloud-native way and is scheduled and managed on the cloud in a unified manner.

In May 2020, OpenYurt, Alibaba’s first cloud-native edge…

By Chending

1) Synchronous HTTP Call

A simple business logic: You can obtain the response data by calling an interface provided by other backend services.

Reverse geographic interface: You can obtain the county, district, city, and province as well as the response code that the longitude and latitude represent through the longitude and latitude:

curl-i"http://xxx?latitude=31.08966221524924&channel=amap7a&near=false&longitude=105.13990312814713"{"adcode":"510722"}

Execution at the server with the simplest synchronous call method:

Change Data Capture: Definition

Change Data Capture (CDC) tracks data changes in the data sources. It synchronizes these changes to the target storage systems (such as a data lake or data warehouse) for data backup or subsequent analysis. We can perform synchronization by the minute/hour/day or even in real-time. CDC solutions are of two types: an intrusive manner and a non-intrusive manner.

By Qu Ning (Shengyuan)

Preface

MaxCompute, a big data computing service, is a fully managed cloud data warehouse service that supports various analysis scenarios. Hologres is a real-time interactive analysis product that supports high-concurrency data writing and querying in real time. It also supports high-performance MaxCompute data analysis acceleration — without data migration — together with federated analysis of Hologres real-time data and MaxCompute offline data. Through this, you can implement solutions for offline and real-time unified data warehouse products. …