Programming VIP

1. Introduction to Mycat A completely open source large database cluster for enterprise application developmentSupport transaction, ACID and enhanced database that can replace MySQLAn enterprise database that can be regarded as a MySQL Cluster is used to replace the expensive Oracle clusterA new SQL Server integrating memory cache technology, ...

Linux command class tail The most commonly used tail -f tail -300f shopbase.log #Count down 300 lines and enter the real-time listening file writing mode grep grep forest f.txt #File lookup grep forest f.txt cpf.txt #Multi file lookup grep 'log' /home/admin -r -n #Find all files that match the keyword in the directory cat f.txt | grep ...

First, complete sub task 3: configure and install nginx. It's smooth and successful at one time Step 1: installation environment Note: before installing these environments, you can check whether you have installed them. If you have, you don't need to install them again rpm -qa | grep gcc We can find that we have it now If not: 1, gcc in ...

File reading & writing in C language #include <stdio.h> int main() { FILE* fp = fopen("log.txt","r"); if(fp == NULL) { perror("fopen"); return 1; } int ct = 5; char buf[64]; while(ct){ fgets(buf,sizeof(buf),fp); printf(buf); ct--; } /* int ct = 5; while(ct) { fputs("hello worl ...

Hello, I'm Liang Xu. wget is a free utility that can download files from the network. Its working principle is to obtain data from the Internet and save it to a local file or display it on your terminal. This is actually done by the browsers we use, such as Firefox or Chrome. In fact, we call the wget program internally for data download. Th ...

Performance test of each protocol layer Forwarding performance hping3: as a SYN attack tool, but it is more used as a performance tool to test the processing ability of network packets. Pktgen: high performance network testing tool pktgen provided with Linux kernel. Pktgen supports a wealth of custom options to facilitate the constructi ...

Construction environment: Gitlab server 192.168.152.131 gitlab installation address: https://about.gitlab.com/install/ 1: Native manual installation gitlab 1. Install and configure the necessary dependencies sudo apt-get update sudo apt-get install -y curl openssh-server ca-certificates tzdata perl 2. Add GitLab package and install it cu ...

VMware DHCP Service and VMware NAT Sevice           After vmware is installed, these two network services will be installed on the host by default. DHCP is used for IP allocation and NAT service is used for address translation. It is only required in NAT mode. Adapter VMnet8 and Adapter VMnet1 on the host   &nbs ...

See this blog post for details of the computer startup process Computer boot process Briefly, after pressing the power key, cs:ip is set to 0xffff0, which is fixed. The BIOS program is recorded on it. The BIOS performs basic hardware self-test, establishes an interrupt vector table, initializes BIOS interrupts, etc. next, the first sector (512B ...

1. General 2. Composition of minimum works 3. Link script 4. Executable program source code analysis 5. Compilation and operation 5.1 compilation 5.2 operation 5.3 commissioning 6. Summary 1. General Any chip needs a piece of assembly code before startup, which can reflect some characteristics of architecture design. It is often ...