Git is a rarely updated but important development software. The version in the official system repository is always significantly behind the latest version. If you don't want to install additional daily updates, manually installing the latest version from source is a good solution.

When nginx starts or rereads its configuration, to speed up processing of some static data sets (such as server names, MIME types, etc., which you may have encountered when configuring nginx), it stores these data in a cache block (cached in a storage device between memory and CPU registers, close to the CPU. Modern CPUs have L1, L2, and L3 encapsulated within the CPU, which is characterized by speed, faster than memory but slower than registers). The size of this cache block is controlled by the parameter server_names_hash_bucket_size. The default size varies depending on the physical CPU, usually being a power of 2. When increasing the size, adjust the value according to the CPU level.

WeChat official does not directly provide a Linux system client. We don't like Wine's Wechat. Kylin Software and Tencent jointly promote the adaptation of native Wechat based on Linux platform. We provide a deb package, which is not wine, and it can be used barely.

Sometimes I want to connect the AirPods2 headset to the Ubuntu computer. After recently reinstalling the system, I encountered a situation where the headset could not be paired. I hereby record the exploration process. I have not tried other AirPods models, and have not tested the equipment (recently purchased AirPods Pro 2nd Generation, after Test, the second generation can also be matched according to this method), the method should be similar.

Every Chinese Linux user has a history of struggling with input methods. When I was a student, I experienced the awkwardness of being unable to type while playing MOBA games. The enemy was about to steal my tower (it was too late to chat late at night), and I hurriedly typed :help. Common multilingual input method platforms for Unix-like operating systems include ibus (Intelligent Input Bus) and Fcitx (Free Chinese Input Tool for X). The latest is Fcitx5. I currently use ibus for Ubuntu. Fcitx5 users should also have their own solutions.