Tag：data
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Time：2020-1-27
Blog Homepage UDP is an important part of socket. I want to take you to know what UDP is and what UDP can be used for. 1. What is UDP? The full name of UDP is user datagram protocol, abbreviated as UDP, which is also called user datagram protocol. It is a simple datagram oriented […]
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Time：2020-1-27
Alimei’s Guide:As a very practical language in daily development and production, it is necessary to master some Python usage, such as crawler, network request and other scenarios, which is very practical. But Python is single threaded. How to improve the processing speed of Python is a very important problem. One of the key technologies of […]
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Time：2020-1-27
Author: data analysis is not an issuehttps://www.jianshu.com/p/05a… Data middle platform is known as the next station of big data, which was raised by Ali. The core idea is data sharing. In 2015, Ali proposed the strategy of “big middle platform, small front desk”. In 2018, because of “Tencent data Zhongtai theory”, Zhongtai once again became […]
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Time：2020-1-27
Summary This paper introduces the scheme of data cloud on airport monitoring scene, which uses the cloud caching function of hybrid cloud array to cache part of the data locally and all the data on the cloud. Application scope It is suitable for the scene of airport monitoring, as well as for the scene where […]
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Time：2020-1-27
Start by spitting out things that have nothing to do with the title.Two weeks less. The reason is that there’s something wrong with my family recently. I’m so busy moving. The figure above shows the amount of exercise for moving, or when someone is asked to help move. In addition to Hangzhou, this month’s exercise […]
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Time：2020-1-27
On December 6, the “Zhongtai Inn – Heroes’ meeting of” counting “was held at Hupan University in Hangzhou. The event is hosted by singularity cloud, kangaroo cloud, Xinhua Zhiyun, and several LAN technologies in cooperation with Jiazi Lightyear.The founders of singularity cloud, kangaroo cloud, Xinhua Zhiyun and Shilan technology, as the first Alibaba series data […]
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Time：2020-1-27
Author: Zhang Xinyu From the perspective of data transmission and data reliability, this paper compares and tests the performance of storm and Flink in stream processing, analyzes the test results, and gives suggestions to improve the performance when using Flink. Apache storm, Apache spark and Apache Flink are all very active distributed computing platforms in […]
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Time：2020-1-27
ActiveMQ topic (see the home page for interview questions + Answers) What is ActiveMQ? What about ActiveMQ server downtime? What about losing the news? Persistent messages are very slow. Uneven consumption of news. Dead letter queue. Is the message retransmission interval and number of times in ActiveMQ? Rabbitmq topic What is the broker in rabbitmq? […]
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Time：2020-1-27
JSON is a lightweight data format for data interaction. There are two main ways to interact with Android data: JSON and XML. XML format is slightly larger than JSON format, so most of them use JSON data format. In the process of Android development, data access JSON parsing is particularly important. Example JSON { […]
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Time：2020-1-27
Preface At present, the main application area of golang is the back-end micro service. Although it is also applied in the business area, it is still a relatively small choice. Most of the service running environments are Linux, and there are fewer applications of golang in windows. Because of special circumstances, the author has to […]
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Time：2020-1-26
Simple data analysis import pandas as pd Datafile = ‘.. / data / air ﹐ data. CSV’ ﹐ aeronautical raw data, the first line is property label Resultfile = ‘.. / TMP / explore. CSV’ ා data exploration result table #Read the original data and specify UTF-8 encoding (you need to use a text editor […]
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Time：2020-1-26
1、 What is businessDefinition: a logical unit in the process of database execution, consisting of a limited sequence of database operations.Nature: consists of one or more SQL statements. These SQL statements are regarded as a whole during the execution, either all of them succeed or fail. No part of the execution succeeded and some failed. […]
