Programmer Group

First of all, what do we need to know about the process? Narrow sense: a process is an ongoing program Generalized: it is the basic unit of operating system allocation Program: it is an inanimate entity waiting for the processor to give life. Once the program has life, it becomes a process. Differences between procedures and processes: ...

1. Virtualized network Network Namespace is a function provided by Linux kernel and an important function to realize network virtualization. It can create multiple isolated network spaces with independent network stack information. Whether it is a virtual machine or a container, it seems as if it is running in an independent network. Moreo ...

I/O multiplexing I/O complex method: select poll epoll effect: You can listen to multiple file descriptors at the same time, Enables the server to process multiple file descriptors at the same time without introducing multiple processes. Network programs need to use I/O multiplexing technology: ◼ The TCP server handles both listening sock ...

This article mainly describes how mybatis is loaded and executed in springboot. Because there will be a lot of content involved, this time we will only explain the call relationship and key code points. In order to avoid the article being too long and sleepy to read, some details that do not affect the overall process will not be involved. Sou ...

https://zerosun.top/2019/08/12/openstack-deploying-by-OSA/ https://www.bookstack.cn/read/deployopenstackwithpuppet/deployment_tool-osa.md 1. Preparation environment: Three physical machines or virtual machines (CentOS7 system and virtual machine environment are used in this paper) One deploy and two network cards (ens192 and ens224) One cont ...

socket introduction The "ip address" of the network layer can uniquely identify the host in the network, while the "port" of the transport layer can uniquely identify the application (process) in the host. In this way, triples (ip address, protocol, port) are used The process of the network can be identified, and the proces ...

2021SC@SDUSC catalogue introduce General steps 1. Enable TIC-TOC timing measurement 2. Define the functions and methods to be used 3. "EXACTRESCALE" and "APPROXRESCALE" 4.HYBRID switching technology 5. Zoom operation 6. Manual readjustment demonstration introduce         &n ...

Catalogue of series articles Tip: you can add the directories of all articles in the series here. You need to add the directories manually TODO: finishing after writing preface Limited cognition, I hope you will forgive me. If you have any problems, I hope to communicate with you and grow together! This paper first makes a brief in ...

catalogue 1, Experimental environment 2, Common commands 3, Noun interpretation 1. Switch 2. Switch configuration 3. Port aggregation 4. Port mirroring 5. Port binding 6.VLAN 1, Experimental environment          Switch: H3C S5000P series Ethernet switch 2, Common commands 1.Enter system vie ...

About Redis Redis (Remote Dictionary Service) is an in memory database, also known as KV database and data structure database. Redis is often used as data cache to cache hot data and reduce the pressure on the database. View the complete Redis command: Redis command center. Key value basic data structure Redis's external interface alw ...