Do not over rely on Redis's expired monitoring

Yunqi information:[ Click to see more industry information]Here you can find the first-hand cloud information of different industries. What are you waiting for? Come on! Redis expired monitoring scenario In the business, there is a need to wait for a certain time to execute a certain behavior, such as closing an order after 30 minutes. There a ...

Posted by sujithfem on Thu, 14 May 2020 10:57:10 +0200

CountDownLatch demo and source code

In the previous project, we encountered a complex query, that is, we need to query 20 pieces of data in pages first, and then divide these 20 pieces of data into four categories according to the event type, and query the unique information of these four categories with threads respectively, and then after all the threads have finished executing ...

Posted by Spikey on Thu, 14 May 2020 07:40:22 +0200

Python 3. X basic tutorial 3

Hello, I'm a little circle who loves to learn programming. Today I'll talk about the if/elif/else statement code import time as t a = 0 while a < 1: x = input('Please enter a number (1-9)\n') y = ['1', '2', '3', '4', '5', '6', '7', '8', '9'] if x in y: print('The input is correct!') t.sleep(5) a=a + 1 ...

Posted by opencombatclan on Wed, 13 May 2020 17:00:53 +0200

LeetCode 235. The nearest common ancestor of binary search tree

My LeetCode: https://leetcode-cn.com/u/ituring/ My LeetCode source code [GitHub]: https://github.com/izhoujie/Algorithmcii LeetCode 235. The nearest common ancestor of binary search tree subject Given a binary search tree, the nearest common ancestor of two specified nodes in the tree is found. The definition of the nearest common ancestor in ...

Posted by bogdan on Wed, 13 May 2020 08:01:37 +0200

Wechat applet -- message board

Wechat small program -- Realization of message board Main function points: The border of rich text can automatically match the screen size; Displays the number of words entered in rich text; Get content in rich text and submit message; Pop up window after submitting message; Corresponding. wxml content be careful: Rich text is displaye ...

Posted by bradles on Tue, 05 May 2020 19:37:53 +0200

Simple data verification using JavaScript

Using JS to complete simple data verification requirement analysis Use JS to complete the simple data verification of the registration page. It is not allowed to leave the user name or password blank technical analysis from form property -- onsubmit must have a return value. If it is true, the submit is successful. If it is false, it cannot be ...

Posted by guayaquil on Tue, 05 May 2020 18:15:24 +0200

spring cloud learning note 4 (request merge processing)

The dependency in microservice architecture is realized by remote call, and the most common problem in remote call is communication consumption and connection number occupation. In the case of high concurrency, due to the increase of communication times, the total communication time consumption will become less ideal. At the same time, due to t ...

Posted by wescrock on Tue, 05 May 2020 11:13:49 +0200

Full introduction to Java array (2)

Example analysis 1. Pass in a value in the function and find the corresponding array corner public class Rewriter { public static int fun(int num) { int[] a =new int[] {1,2,3,4,5}; for (int i = 0; i < a.length; i++) { if (a[i] == num) { return i; } ...

Posted by cs.punk on Tue, 05 May 2020 04:00:28 +0200

golang validates the data format of struct field

Suppose we have the following structure: type User struct { Id int Name string Bio string Email string } We need to verify the validity of the fields in the structure: · the value of Id is in a range. · the length of Name is in the range of none. · Email format is correct. We might writ ...

Posted by brent123456 on Mon, 04 May 2020 08:10:43 +0200

RadioButton display multi line implementation in RadioGroup (very simple)

RadioGroup display multiline implementation steps Radio buttons wrapped in radio group are characterized by radio selection and mutual exclusion, which are often used in projects. If RadioButton implements multi line display, it will lose its original feature. On the Internet, most of them are customized to deal wi ...

Posted by TheBrandon on Mon, 04 May 2020 03:04:34 +0200