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catalogue 1, String data type 2, List data type 3, Hash data type (hash type) 4, Set data type (unordered set) 5, Sorted Set data type (zset, ordered set) 1, String data type Overview: string is the most basic type of redis, which can store up to 512MB of data. String type is binary safe, that is, it can store any data, such as numbers, ...

The original scheme of linux is inotify+rsync to realize real-time data backup; inotify monitors the file system under linux at the linux kernel level, and records the open/access/modify operations of files; inotify has two shortcomings: rsync takes up too many resources due to the combination of rsync and rsync files. 1. It takes too long t ...

catalogue environment prepare install Configuration after installation Deployment NET 6 program summary   K8s is a foundation for learning cloud native. In order to do some experiments, stand-alone deployment is the most convenient. The following will introduce the stand-alone installation of k8s in CentOS NET 6 Program published t ...

plist https://elixir.bootlin.com/linux/v4.9.59/source/include/linux/plist.h#L212 *Descending priority sorted double linked list plist is a list of nodes sorted by priority; The priority of each node is from INT_MIN to INT_MAX (minimum). The time complexity of inserting is O(k), the time complexity of deleting is O(1), and the time complexit ...

1, Virtual machine preparation Update virtual machine, command: yum -y updateModify the hostname. The command is hostnamectl set hostname atlasClose the firewall. The command is systemctl stop firewalld Service and systemctl disable firewalld servicereboot 2, Install jdk Uninstall openjdk, command: rpm -e --nodeps java-1.7.0-openjdk rpm -e ...

1. Preface Following the previous article, the relevant modifications are mainly explained here 2. Drive and tool description The coexistence function of station and softap is realized on the premise that the driven debug mode is turned on, Because you need to DHD the macro of debug mode in the Makefile file_ Debug is added. If the macro ...

preface Front end usage: vue/cli "^ 4.5.15" Back end usage: springboot2 6.2, mybatis-plus3. 5.9,mybatis-plus-generator3. five point one Deployment: nginx,tomcat,webpack Summary Although the project is colorful, it is not difficult The biggest gains are: 1. Technical selection and task requirements Once determined, late changes ...

Process waiting 1. Necessity of process waiting ·We have previously introduced the zombie process, that is, when the child process exits, the parent process does not receive the exit status information of the child process. At this time, the child process becomes a zombie process, resulting in memory leakage. Once the process bec ...

preface In the linux kernel, we can't find code similar to the previous demo type. For linux, code reusability is very important, otherwise there will be a lot of junk code in the kernel, resulting in a large number of kernel files. For example, the same module has different drivers on different platforms. In this case, one hardware correspond ...

1. log analysis [ 3537.282130] PC is at do_page_fault+0x40/0x2e0 [ 3537.282130] LR is at do_translation_fault+0x5c/0xd4 [ 3537.282130] pc : [<ffffffc000095704>] lr : [<ffffffc000095a00>] pstate: 800001c5 [ 3537.282130] sp : ffffffc027b38130 [ 3537.282130] x29: ffffffc027b38130 x28: ffffffc027bdc000 [ 3537.282130] x27: ffffffc0009f ...