How I joined Spotify as an Engineer From China — 2020 is a magical year. With Covid-19 raging around the world, people’s work and lifestyle have changed a lot. But the opportunities still exist, and my career ushered in a tremendous change. I moved from southern China to Sweden🇸🇪 and became a software engineer at Spotify. I have always wanted…

Alternatives for the ternary operator in Go — If you were like me, a pure Java developer before writing Go, you must be wondering why Go doesn’t support the ternary operator like return a > 1 ? 0 : 1. Most mainstream languages like C and Java are supportive of ternary operators; languages like Python and Ruby support…

When and how to use the Go runtime package — The Go runtime package and its subpackage debug are very practical for managing metrics, debug, goroutine, and GC, which can also facilitate our understanding of the implementation of Go itself. This article aims to answer the following five “How To” with some usage cases and sample codes. How to use…

Introduce Murre for continued monitoring of Kubernetes containers — The go-to platform for deploying applications is now Kubernetes. For one, its clusters may include hundreds of resources like pods and deployments, and it is made up of several components and user-defined operators. The variety of services, applications, and networks encapsulated in the resources make it challenging for users to…

Official tools to protect your code​ — Security vulnerabilities exist in any language and any code, some are written by ourselves, but more are from the upstream dependencies, even the underlying Linux. …

Software as a Service (SaaS) is one of the three most widely existing cloud service patterns, gradually dislodging traditional software from the market. SaaS’s pay-as-you-go business model is straightforward, adaptable, and cost-effective, which attracts more and more users. However, more issues occur as SaaS grows. One incident back in December…

Walkthrough tools & configs & knowledge used in Kubernetes cronjob/deployment debug — With Kubernetes being the de facto standard for deploying applications, using CLI to deploy and debug has definitely become a must-have for developers, though it used to be a DevOps skill. The troubleshooting tasks in the Certified Kubernetes Administrator (CKA) I passed earlier this year had suggested what skills remained…

Demo on java-operator-sdk and compare it with Kubebuilder — I have been working on Kubernetes operator development to facilitate cluster management. When developing an operator, we normally focus on two points Defining a CRD to manage the required information (spec), and the status information that needs to be returned to the user (status). Defining a custom controller, which is…

“Special” Strategy Pattern in kubectl Go — In my last article, we walked through the usage of kubectl get -o/–output with examples of different formats, which are a little complex that even involve simple coding. To better master and memorize the output cheatsheet, nothing can help more than understanding the logic behind it. So let’s unveil its…