Go Common Test
January 22, 2025 · 2 min read · Page View:
The test methods in Go mainly include three types: unit test, benchmark test, and example test.
...timerring
Video Technology 101
January 20, 2025 · 21 min read · Page View:
Do you really understand the video technology? What is the frame rate, resolution, bit rate and their relationships? Do you know the parameters p and K in the terminology 1080p and 4K? Do you know how to describe the video quality? What is the Blu-ray Disc on earth? What the difference between the codec such as H.264/AVC, H.265/HEVC, AV1? You may notice the Apple ProRes in apple, so do you really understand what it for? Do you know the HDR and Dolby Vision? So why there are so many tailers such as .mp4, .mkv, .flv, etc?
Now this Video Technology 101 will introduce them to you.
...The Main Kind of Message Queue
January 19, 2025 · 12 min read · Page View:
Message queues are a form of asynchronous service-to-service communication. They are important in enhancing a system’s scalability, reliability, and maintainability.
...The Method to Manage Traffic
January 19, 2025 · 7 min read · Page View:
Do you know the basic method to manage the traffic? There are four methods: Load Balancers, Reverse Proxies, Forward Proxies, and API Gateways. And they have different features and usage scenarios.
...The Different Kind of API Design
January 19, 2025 · 14 min read · Page View:
In the daily life, we often hear about different kind of API, such as REST API, GraphQL API, WebSocket, Webhook, RPC and gRPC even the SOAP, so do you know the difference between them? How to choose the right API for your project?
...The Encode and Decode in Python
January 19, 2025 · 0 min read · Page View:
Do you really know the encode and decode in Python?
...About the Systemd
January 18, 2025 · 2 min read · Page View:
It has been a long time since the linux used init to manage the startup process, such as sudo /etc/init.d/apache2 start or service apache2 start, but the init is serial. To address this issue, the systemd was born. The d is the abbreviation of daemon, which means the systemd is a daemon manager. The systemd substitutes the initd and becomes the default main process PID 1.
The Tips About Dockerfile
January 18, 2025 · 3 min read · Page View:
Normally, we often write a Dockerfile in the current directory.
- The
Dockerfileis a configuration file that describes how to build the image. You can refer to the official documentation for more details. - If you list more than one
CMD, only the last one takes effect. So if you have multiple commands to run, you better write them in a script file. - Docker is not the VMware, there is no
systemdin the container. Its startup program is the container application process. The container exists for the main process. Once the main process exits, the container loses its meaning of existence and thus exits. So when you execute multiple commands and if they are blocking, you better write the previous commands in nohup and the last command in the blocking command. (never use the command such asCMD service nginx start, the CMD only will execute asCMD [ "sh", "-c", "service nginx start"], when the sh is executed, the container will exit, the correct way is run it directlyCMD ["nginx", "-g", "daemon off;"])
Docker 101
January 16, 2025 · 8 min read · Page View:
Docker is a practical tool for everyday use, and like Git, you can learn it in just 30 minutes.
The Instance Class Static Magic Method in Python
January 14, 2025 · 2 min read · Page View:
So what is the difference between the Instance method, the Class method and the Static method?
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