Tag：efficiency
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2022 / 4 / 8 academic success project summary
Up to now: EV = 559.6 ﹐ AC = 844.5 ﹐ PV = 1250 SV (progress deviation) = ev-pv = 559.6-1250 = – 690.4 CV (cost deviation) = ev-ac = 559.6-1250 = – 439.6 SPI (Progress performance index) = EV / PV = 559.6 / 1250 = 0.45 CPI (cost performance index) = EC […]
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Hadoop introductory notes 7: Hadoop file compression format
I background In Hadoop, very large files are generally stored, and there is a large amount of data transmission between nodes in Hadoop cluster when storing HDFS blocks or running MapReduce tasks. If conditions permit,Minimize file size, which will help reduce storage requirements and reduce data transmission on the network. II Compression algorithms supported by […]
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How to use node JS to write memory efficient applications
catalogue preface Problem: large file copy Streams and buffers in nodejs Buffers Streams Solution 1 (simply use stream to copy files) Solution 2 (file replication based on flow and automatic back pressure) conclusion preface Software applications run in the main memory of the computer, which we call random access memory (RAM). It allows us to […]
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[open registration] cloud native transformation and Efficiency Technology Salon · Xiamen station
Introduction:Discuss the changes of cloud native technology wave with Alibaba and other major manufacturers and cattle, and exchange how to comprehensively improve the efficiency of software engineering with the help of new technologies and tools. You don’t understand anything. Don’t panic. The new immersive sharing will make you happy. Come on, take your questions, solve […]
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Asicboost and segwit
The discussion on asicboost and segwit has been deserted a lot, but I still want to try to explain it from a technical point of view: What is asicboost What is the relationship between asicboost and segwit Before saying these two things, we cannot do without a keyword:mining, let’s talk about mining first! mining Mining […]
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From Devops to bizdevops, develop systematic methods to improve efficiency
Note: This article is a collation of the content shared by he Mian in yunqi conference. With slight deletion, click the link below to view the full viewCloud bizdevops Forum:https://yunqi.aliyun.com/2021/agenda/session173 “R & D efficiency” has been a hot word in recent years, and many organizations will launch special projects to improve R & D […]
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2021 cloud habitat Conference – Alibaba cloud released visual computing solutions to promote the large-scale implementation of XR and digital twin technologies
AR (augmented reality), Mr (hybrid reality), VR (virtual reality) and other XR technologies and digital twin technology applications have been quietly applied in production and life. For example, virtual simulation laboratory in teaching; Digital factory of automobile production line; In the smart community, smart city and smart port with 1:1 management of all elements of […]
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My university of Internet of things [Chapter 6]: the contradiction between personal heroism and organizational efficiency
Like many people, I also like reading martial arts novels, especially Jin Yong’s novels. The shooting and carving trilogy is the most impressive. I have seen each trilogy several times. Why are martial arts novels fascinating? It may be because martial arts novels build an illusory world. In this world, the world of interpersonal relationships […]
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Writing methods that should be prohibited in native JS
catalogue Block level function Directly modify the prototype of the object with callee caller eval Block level function In strict mode, it should not be used before ES6. ES6 can be used from the beginning. The scope of the function is within the block that declares the function. It shall not be used in non […]
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The third generation of an analytical database
Editor’s recommendation:In the 1960s, the first enterprise database product was born; Over the past 60 years, the database field has been continuously updated iteratively; With the explosive growth of data scale and increasingly rich data types, new databases are rising in an all-round way, and standardized cloud services have become a trend.Let’s re understand the […]
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Leetcode notes – hash
Theoretical basis of hash table Used to quickly determine whether a native is in the collection (quick search) The hash function maps the passed key to the index of the symbol table Hash conflict solves the problem that multiple keys are mapped to the same index of the symbol table. The common solutions are zipper […]
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The 2021 hande user conference was successfully concluded, and the special performance of cloud original platform attracted extensive attention
On October 29, 2021 hande user conference was successfully held in Wuzhen. “Hand in hand symbiosis, digital drive evolution”. This conference invited pioneer enterprises, industry experts, technical experts and ecological partners to gather in Wuzhen, enjoy the successful implementation of the latest application scenarios and jointly seek the road of high-quality development of brand enterprises. […]