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python - Django web project has high CPU usage. How to perform performance analysis?

First of all, I have never done performance analysis. I am a newbie. When I was maintaining the previous code, the project had a very high CPU usage, which could probably eat up the CPU. Now that the original code maintainer has resigned, it is difficult to ask people. I am helpless. Let me ask you ...

typecho 2017-06-12 09:26:40

python - How to perform data analysis on 20 million pieces of structured data

Prepare for time series analysis, groupby analysis and trend prediction. Is using Python dataframe enough?

習慣沉默 2017-07-05 10:34:39

Laravel's package based on Elasticsearch - Elasticquent, the setting problem of using ik word segmentation

Using Laravel's Elasticsearch-based package (https://github.com/elasticquent/Elasticquent#indexes-and-mapping), questions: 1. When the following configuration uses ik word segmentation, how should it be set? 2. The analysis, filter, analyze in the following code...

PHP中文网 2017-05-16 16:52:35

Mysql returns some records as empty in date field because date has multiple formats

I am trying to analyze order_date column and the column has multiple date formats and I want to convert all these dates to the same format which will make it easier to analyze order_date. I am trying to analyze order_date but this column has multiple date formats 2019/07/15 and 1/13/2014 but while u...

P粉649990163 2024-04-06 13:29:40

javascript - Why do many projects serialize the data in the request body before sending a post request?

I found that many projects use "querystring parsing and stringifying library" to serialize the data to be transmitted in post requests, such as qs. {Code...} There is a sentence in the introduction in qs: "A querystring parsing and stringif...

天蓬老师 2017-06-15 09:23:20

Caching reporting data in the same transaction database vs using a data warehouse

We have a SaaS solution where each tenant has its own MySQL database. Now I'm designing a dashboard for this SaaS system and it requires some analytical charts. To obtain the data required for the chart, we can query each tenant's transaction data in real time from its database. and get updated grap...

P粉511749537 2024-02-26 19:20:23

python - dateutil.parser handles incomplete time strings

The parse function is powerful and convenient, and it is easy to handle time analysis in various string forms. However, when encountering an incomplete time format, such as '8-9 12:00', it can also be automatically parsed into 2017-8-9 12: 00, the default current year is used to complete the missing...

过去多啦不再A梦 2017-06-12 09:27:04

Regarding the missing section of the video on the RBAC permission function

In the RBAC course, the next video on role and permission data simulation is no longer available. It is directly about permission vulnerability analysis. Do I need to pay for this missing video?

迟小帅 2020-01-10 16:18:53

Error: The source cannot be parsed for import analysis because the content contains invalid JS syntax

When I was using Vite+Vue to unit test a web component, I encountered this error: Error: The source cannot be parsed for import analysis because the content contains invalid JS syntax. You may need to install the appropriate plugin to handle the .html file format. ❯formatErrornode_modules/vite/dist/...

P粉136356287 2024-03-25 20:08:02

Is multiple default MySQL servers feasible in Docker's phpMyAdmin?

I'm trying to use Docker to build an environment that includes two MySQL servers and a phpMyAdmin server to easily analyze data during development. My docker-compose.yml file is as follows. version:"3.9"services:database1:container_name:Database1image:mysql:8.0.28command:--default-authenti...

P粉718730956 2023-08-25 21:56:14

How to write component unit tests using vitest in Nuxt 3?

I'm trying to migrate from Vue3 to Nuxt3. I have written unit tests for my components using vitest and these tests are working fine in my Vue application but the same tests in Nuxt application are giving the following error: Error: Unable to parse source for import analysis because The content conta...

P粉953231781 2024-03-25 19:18:28

javascript - Answer: When the instance object calls the constructor, what is the point of this in the constructor?

This problem actually comes from when analyzing the jQuery source code, I saw that var ret = jQuery.merge(this.constructor(), elems ); is used, and this.constructor() returns an empty instance object created by the init method. Therefore, I am confused about the direction of this. the following...

ringa_lee 2017-07-05 10:39:35

Analyze and understand the use and purpose of InteractionType in @azure/msal-browser

I'm currently using the @azure/msal-browser library and I came across the term InteractionType. Mentioned as an enum in the documentation link (archived). However, I can't find details on how to use it and what it is used for. Can someone explain more fully the purpose of InteractionType in the cont...

P粉333395496 2024-03-26 22:03:04

c++ - Generic function object.

Just now when I was looking at the STL source code to analyze the copy function, I saw this piece of code {code...} This __copy_dispatch is a struct with an overloaded () operator. When called in copy, it directly {code...} } Directly using this struct calls the () operator instead of using a stu...

淡淡烟草味 2017-05-16 13:22:50

The difference between single quotes and double quotes

Single quotation marks have stronger performance, but poor functionality. Double quotation marks can directly perform a simple analysis of the content of the string. For example, the performance of variables and special escape characters will be reduced accordingly. In general, single quotation mark...

P粉698851581 2022-09-22 11:01:08

How to handle missing values using Python

Recently, the project has been studying how to deal with missing values. Because the data used for analysis is diverse, missing values also account for a small part. There are two headaches: 1. There is a special program in R language that handles missing values. mice package, is there anything si...

PHP中文网 2017-06-22 11:51:31

javascript - How to solve the problem of playing non-video links on ios on WeChat

Such video links cannot be played on ios devices. My analysis should be that the WKWebview kernel cannot obtain the real video address through such links. The current idea is to use js to obtain the real address of the video and then assign it to the video tag, but the specific implementation How sh...

我想大声告诉你 2017-06-05 11:10:25

ThinkPHP-Casbin: a Casbin extension package specially customized for ThinkPHP5.1

PHP -Casbin: A PHP permission management framework that supports ACL, RBAC, and ABAC multiple models. This extension package is very useful, but it is limited to the level. I hope Brother Zhu can record a video to help PHP enthusiasts analyze the implementation ideas and usage methods. Casbin offici...

勇哥 2019-06-12 21:54:25

Analyze the problems encountered when importing axios and vue in vite

I'm creating a project using Vue.js and Vite and I'm having trouble running it. [plugin:vite:import-analysis] Unable to resolve import 'axios' from 'src\components\Student.vue'. Does the file exist? What I've tried is shown below. I have installed npmiaxios but why do I get this error and also impor...

P粉545910687 2023-08-15 15:44:23

Extract specific JavaScript links and dates from an HTML table using Beautiful Soup

I'm trying to parse an HTML document using beautifulsoup and the FindALL method, but I can't seem to isolate the information I need. I've looked at the documentation and some tutorials, maybe because I'm a junior developer, but I can't seem to isolate the numbers and links. This is a dummy HTML tabl...

P粉436410586 2024-03-29 20:14:35