Tag：Pattern
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Time：2021-9-18
Author Jiang MingmingSource ｜Erda official account Reading guide: in order to let you better understand the design and implementation of APM system in MSP, we decided to write a series of articles on detailed discussion on microservice observation to go deep into the products, architecture design and basic technology of APM system. This is the […]
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Time：2021-9-18
1. Randomly generate 33 digits: var arr=[]; for(var i=1;i<=33;i++){ arr.push(i); } 2. Take 6 digits randomly; Storage location: after the cycle is completed once, the index corresponding to the current arr array will be deleted, and no duplicate elements will appear var newArr=[]; for(var i=0;i<6;i++){ var num=Math.floor(Math.random()*arr.length); newArr.push(arr[num]); arr.splice(num,1) } The above will get an […]
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Time：2021-9-18
In the previous chapters, we introduced how to build a linux learning environment and some common commands of the Linux system. As mentioned earlier, when Linux or UNIX systems are applied on the server side, they often do not use the graphical interface, but use the command line operation mode. How can we write some […]
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Time：2021-9-17
It is more or less used in NoSQL development, and it is also a necessary knowledge point for interview. I’ve asked every interview in recent days. However, I feel that the answer is not good, and there are still many knowledge points that need to be sorted out. Here, I’ll comb through several redis notes, […]
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Time：2021-9-16
In the twinkling of an eye, it has been ten years since I developed the software of the business system. From the passion at the beginning to the project one by one. Although I tried my best to encapsulate some commonly used codes or patterns into the framework, I still felt endless repetition, which is […]
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Time：2021-9-16
date author edition remarks 2021-03-24 dingbin V1.0 When C + + programmers inevitably encounter things such as changing computers and servers in their daily development, rebuilding and building a C + + development environment is too heavy and takes a lot of unnecessary precious time. VIM’s youcompleteme (YCM) plug-in can realize better automatic completion and […]
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Time：2021-9-14
Redis series: Redis series (I) introduction to redis Redis series (II) 8 data types of redis Redis series (III) integration of redis transactions and spring boot Redis series (IV) redis profile and persistence Redis series (V) publish subscribe mode, master-slave replication and sentinel mode Redis series (VI) redis’s cache penetration, cache breakdown and cache avalanche […]
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Time：2021-9-14
Since C #7.0, pattern matching has been evolving as an important new feature of C # continuously. Drawing lessons from the concept of functional programming of his younger brother f #, C # has more and more abilities. C #9.0 has further enhanced the function of pattern matching. In order to have a more in-depth […]
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Time：2021-9-14
What is a file A file is a named location in the storage area of the system, which is used to store some information for subsequent access. It can realize continuous storage in nonvolatile memory, such as on hard disk. When we want to read or write a file, we need to open the file; […]
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Time：2021-9-14
This article was originally published by 123 RT thread forum users:https://club.rt-thread.org/as… Guide for use analysis and troubleshooting of RTT serial port V1 Version (I) sketch Whether novices who have just come into contact with RT thread or experienced Daniel, when they use RT thread, the most frequently and widely used peripherals must be serial devices. […]
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Time：2021-9-13
The emergence of a new technology is not out of thin air, but the inheritance and development on the original basis. Serverless is no exception. When we review the development of IT infrastructure, we will find that serverless will emerge naturally. You can invent it yourself (but you can’t realize it). LAN Era In the […]
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Time：2021-9-13
Summary:This article mainly introduces the behavior and comparison of date type in gaussdb (DWS) data type under different database modes and different application scenarios. This article is shared from Huawei cloud community《Date type of gaussdb (DWS) data type》Author: Xiao Zhong. There are three modes in gaussdb (DWS), namely Oracle mode, TD mode and MySQL mode. […]
