Programmer Think

preface Recently, we need to use yapi with team members, but some interfaces are not suitable for the yapi already deployed by the company. So we have the idea of deploying a set of yapi ourselves. There are twists and turns in the middle, and finally it is built. 1. Environment At first, I applied for a free cloud server on a cloud webs ...

1, Introduction to HAProxy HAProxy provides high availability, load balancing and proxy based on TCP and HTTP applications. It supports virtual hosts. It is a free, fast and reliable solution. HAProxy is especially suitable for web sites with heavy load, which usually need session persistence or seven layer processing. HAProxy runs on the ...

Experiment 2 of Linux operating system: process communication Title: [purpose] Further improve the ability of C programming in Linux environment, understand and be familiar with a variety of IPC mechanisms supported by Linux. As a multi task and multi process operating system, information interaction between processes is inevitable. Inter pr ...

[Oracle] CentOS 7.4 installation and deployment Oracle19c Project requirements         In the production environment, according to the business development and project requirements of the enterprise, the business database will be selected according to the importance of the business, and the data model and database design ...

1, Compilation and installation method 1. Compilation and installation environment (1) Linux operating system (2)EPICS BASE 3.15 (3.15.1 or later) (MCoreUtils uses some functions only after EPICS BASE 3.15, such as epicsThreadHookAdd() function) 2. Download the installation package https://github.com/epics-modules/MCoreUtils 3. Compile and i ...

Samba: it is a free software to implement SMB protocol on Linux and UNIX systems, which is composed of server and client programs; SMB - Server Messages Block information service block: it is a communication protocol for sharing files and printers on the LAN. It provides sharing services for files, printers and other resources between dif ...

1. Semaphore description Semaphore is used to synchronize the process (i.e. control the execution of the process). It is a special variable and generally takes a positive value. Its value represents the number of resources allowed to access. When obtaining resources, the semaphore value needs to be atomic minus one. This operation is called P ...

Check whether the motherboard is in UEFI mode ls /sys/firmware/efi/efivars Connect network dhcpcd Test whether the connection is successful ping baidu.com Ensure that the system time is accurate timedatectl set-ntp true View hard disk partitions fdisk -l Hard disk partition Partition using cfdisk tool cfdisk /dev/sda After ent ...

structural morphology 1. Problems of the structure How are points calculated? First, you must master the alignment rules of the structure: \1. The first member is at the address offset from the structure variable by 0. \2. Other member variables shall be aligned to the address of an integer multiple of a number (alignment number). Alignmen ...

catalogue select: Function parsing: Parameter type analysis: fd_set operation function:     Monitoring process: Advantages and disadvantages: poll: Function parsing:     Event structure resolution:   Advantages and disadvantages: epoll: Function parsing: Principle: epoll features: LT and ET modes: refer ...