Tag：performance
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Time：2021-1-20
Master moves are often not to consider who knows more knowledge, but to attract the enemy! At the beginning of learning to do performance optimization, many people just grasp the eyebrows and moustaches, and do everything they know, want to do, and can do. This is a typical hardworking force! I did a lot of […]
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Time：2021-1-20
breakpoint debugging Node.js The official breakpoint debugging mechanism is provided. For security reasons, it is closed by defaultnodeparameter–inspector–inspect-brkOpen, with IDE can be very convenient to debug code, this chapter on the previous chapter has completed the projecthost1-tech/nodejs-server-examples – 12-rpcbe based onVisual Studio CodeTo debug breakpoints: $MKDIR. Vscode # create a new. Vsocde directory to store […]
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Time：2021-1-18
subject To give you a string s and a character pattern P, please implement a regular expression matching that supports “.” and “*”. ‘.’ matches any single character ‘*’ matches zero or more preceding elements. The so-called matching is to cover the whole string s, not part of the string. explain: S may be empty […]
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Time：2021-1-17
For the use of distinct and group by:1. When the performance of the system is high and the amount of data is large, group by is used2. When the performance of the system is not high and the amount of data used is small, both can be used3. Try to use group by Simple example: […]
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Time：2021-1-16
Why write this article I see that although many people use sqlsugar, they also use dapper. Because sqlsugar is compatible with all dapper APIs, since you use sqlsugar, there is no need to use two orm in the same project So this article is for friends who use or want to use sqlsugar Dapper […]
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Time：2021-1-15
sync.Map It has the following characteristics: When concurrent reading and writing is needed, the general method is to lock, but the performance is not high. Go language provides a more efficient concurrent security method in version 1.9 sync.Map , sync.Map Unlike map, it is not provided in the native form of language, but in a […]
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Time：2021-1-15
Detr is based on the standard transorfmer structure, and its performance is comparable to that of fast RCNN. However, the overall idea of this paper is very simple. I hope it can provide a general idea for many subsequent studies like fast RCNN Source: Xiaofei’s algorithm Engineering Notes official account Paper: end to end object […]
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Time：2021-1-15
1： Background 1. Tell a story Recently, looking at the NETCORE source code, I found that a lot of code in the framework has been modified by Ref. let me go. Is this still the ref I know? Take span for example, the code is as follows: public readonly ref struct Span<T> { public ref […]
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Time：2021-1-13
By Liu Jun (Lu GUI)Source|Alibaba cloud official account This paper is a pressure test on the performance of Dubbo address push. We expect to show the performance improvement of Dubbo 3 by comparison, especially the newly introduced application level address model. However, it should be noted that this is not the official version of the […]
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Time：2021-1-13
Performance optimization is an eternal hot topic in front-end field. This series of articles will be divided into three chapters: monitoring, load performance optimization and run-time performance optimization If you want to optimize, you have to have metrics. With monitoring, we can objectively and systematically analyze performance bottlenecks and verify optimization results. So let’s start […]
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Time：2021-1-13
Introduction:Cloud native has become a trend of cloud services in the industry. Supporting heterogeneous computing on cloud native is helpful to improve CPU utilization. This article analyzes the mainstream GPU sharing solutions in the industry, and tells you where Alibaba cloud cgpu cattle are! The cgpu (container GPU) container technology introduced by Alibaba cloud’s heterogeneous […]
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Time：2021-1-10
SSDB is a fast open source NoSQL database for storing billion level list data. characteristic Replace redis database, 100 times capacity of redis Leveldb network support, using C / C + + development Redis API is compatible and supports redis client Suitable for storing set data, such as list, hash, Zset The languages supported by […]
