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java

Using Service Subscription (HTTP/2) to Retrieve Device Status

This article describes how to retrieve the device status of an IoT device through HTTP/2 channel subscription for effectively implementing the state-specific processing.

Getting Started with Alibaba Cloud ApsaraDB for Memcache SDK with NodeJS

In this tutorial, we will set up Alibaba Cloud's ApsaraDB for Memcache with the Alibaba Cloud SDK and NodeJS.

Document Object Model (DOM) Tutorial Series: Part 1

This article discusses everything you'd need to know about Document Object Model (DOM).

Apache Flink Fundamentals: Using Table API for Programming

This article discusses three main parts: what is Table API, how to use Table API from a code perspective, and the latest information about the Table API.

Apache Flink Fundamentals: Five Modes of Client Operations

This article shares five methods on how to submit tasks in Flink, helping you improve development skills and enhance operations and maintenance efficiency.

Set up a Hadoop Cluster with Apache Ambari

In this tutorial, you will learn how to set up Hadoop and its components on a multinode cluster using Apache Ambari.

How to Install Rudder on Alibaba Cloud

In this tutorial, you will learn how to install Java Oracle JDK and set up Rudder on Alibaba Cloud.

Use Python API in Apache Flink

This article introduces the history of Apache Flink Python API, and discusses its architecture, development environment, and key operators.

Basic Apache Flink Tutorial: DataStream API Programming

This article reviews the basics of distributed stream processing and explores the development of Flink with DataStream API through an example.

Going Beyond Java 8: A Developer's Perspective

This article describes the features in Java versions later than 8 from a developer's perspective, emphasizing how developers can use them to improve performance.

Performance Issues Related to LocalDateTime and Instant during Serialization Operations

This article discusses some performance issues that an Alibaba engineered encountered during serialization operations which were related to using the LocalDateTime and Instant time formats.

How to Install WildFly (JBoss) on Ubuntu 18.04

WildFly is a free, open source and a cross-platform application written in Java and developed by Red Hat.

Deploy an Image using Ansible and Jenkins

In this tutorial, you are going to deploy an image that consists of Tomcat, Java, and MySQL using Ansible and Jenkins on Alibaba Cloud.

Troubleshooting Production Issues with Alibaba's Arthas

This article takes a look at Alibaba's open-source troubleshooting tool Archas, its major features, and how you can start to use it today.

The Refactoring Principle and Why It Matters to Anyone Coding

Chanyi shares his thoughts about methods that you can use to code and the current situation of coding, considering the problem of the refactoring principle.

Let's Talk about Some of the Chaos You'll Find on Java Servers in Startups

This article looks at some of the chaos you'll find on Java servers in startup companies and looks at some ways to turn these serves around for the better.

How Dubbo-Based Microservices Are Used in Insurance Companies

Xiaobin from China Life shares how Dubbo changed their architecture and how they're considering moving to Alibaba Cloud.

Bitmap-Based Data Processing in MaxCompute

This article has a code example that shows how you can encode and compute bitmaps of active user IDs form different dates using the MapReduce module of MaxCompute.

Taking a Go at Gateway and Sub-device Development

In this article, we will be taking a look at how you can use a Gateway and Sub-device scenario for connecting IoT devices to the cloud.

Learning How to Use OrientDB's Intuitive Module OrientJS

In this tutorial, you will setup OrientDB on Alibaba Cloud and explore how you can use OrientJS together with OrientDB.