Tag：test data
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Time：2021-10-19
MapReduce can calculate very complex aggregation logic and is very flexible. However, MapReduce is very slow and should not be used in real-time data analysis. MapReduce can be executed in parallel on multiple servers. Each server is only responsible for completing part of the wordload. Finally, the wordload is sent to the master server for […]
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Time：2021-10-18
Redis, Memcache and shared memory all read data from memory. In order to test who is more efficient, I conducted a fair test under my CentOS virtual machine. Test parameters Environment: CentOS (configuration ignored), language: PHP, webserver: nginx, test times: 10000, character type and length: string (1024) Prepare for test <?php //Test data $arr = […]
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Time：2021-10-11
This article was first published on December 23, 2015 at 21:04:17 environment PG database provides a lightweight stress testing tool calledpgbenchIn fact, it is a compiled extensible executable file. Test environment: CentOS 5.7 in VMWare 8.0 PG：9.1.2 Database parameters: max_connection=100 Other defaults be careful:This article is for illustration onlypgbenchTherefore, the database parameters are not tuned. […]
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Time：2021-10-6
Online mysql, SQL Server table creation statement, JSON test data generation tool Online mysql, SQL Server table creation statement, JSON test data generation tool This tool can generate JSON test data from SQL table creation statements, and supports MySQL and SQL Server table creation statements SQL: structured query language is a database query and programming […]
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Time：2021-10-3
d3ForceEasy GitHub address – > contains sample codev1.0.2A encapsulated d3js force guide diagram is a simple wheel Dependency D3. JS > v4.0.0 Example The code is in the test file usage method 1.npm install d3_force_easy –save 2. Introduce configuration and data import d3ForceEasy from ‘d3_force_easy’ import ‘d3ForceEasy.css’ … //Basic configuration const option = { dom:document.getElementById(‘app’), […]
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Time：2021-9-22
Devui is a team with both design and engineering perspectives. It serves the devcloud platform of Huawei cloud and several middle and background systems within Huawei, as well as designers and front-end engineers.Official website: devui.designNg component library: ng devui (welcome star)Official communication group: add devui assistant (wechat: devui official)Devuihelper plug-in: devuihelper LSP (welcome star) preface […]
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Time：2021-8-31
Original link:http://tecdat.cn/?p=22673 method Prophet anomaly detection uses prophet time series prediction. The basic prophet model is a decomposable univariate time series model, which combines trend, seasonality and holiday effects. The model prediction also includes an uncertainty interval around the estimated trend part. In addition, complete Bayesian inference can also be at the cost of increasing […]
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Time：2021-8-26
requirement: Write login interfaces. An interface can be accessed without login or login (anonymous users access once a minute and login users access three times a minute) #The student and user tables are required 1.models.py from django.db import models class Student(models.Model): name = models.CharField(max_length=32) Sex = models. Smallintegerfield (choices = ((1, ‘male’), (2, ‘female’), (3, […]
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Time：2021-8-16
Finding prime pairs Goldbach guesses that everyone knows something. We don’t want to prove this conclusion now, but want to take out an even number arbitrarily from the number set that can be expressed in the program language to find two prime numbers so that the sum is equal to the even numberIf this fact […]
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Time：2021-8-15
The problems related to porcelain pieces seem to be similar to recursion. They have their own regular formulas. Please deduce more Theatre Square Theatre Square in the capital city of Berland has a rectangular shape with the size n × m meters. On the occasion of the city’s anniversary, a decision was taken to pave the Square […]
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Time：2021-8-4
The PG staging environment imports test data, and duplicate key value violations unique constraint appears Table:userextrainfo Maximum ID SELECT max(id) from userextrainfo; 1300 Next auto increment ID SELECT nextval(‘userextrainfo_id_seq’); You need to reset the self incrementing ID select setval(‘userextrainfo_id_seq’,1301);
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Time：2021-7-27
Link:https://developers.sap.com/tu… Reference code:https://github.com/SAP-sample… Local path: C: \ code \ referencecode \ SAP kyma tutorial example This sample provides the MS SQL database configured with a sample DemoDB database which contains one Orders table populated with two rows of sample data. This example shows how to create an MSSQL database named demodb, a database table named […]
