Solutions for distributed locks
Optimistic locks based on database tables for distributed locks.(for small concurrencies)
Use the add() method of memcached for distributed locks.
Use the cas() method of memcached for distributed locks.(not commonly used)
Use the setnx(), expire() methods of redis for distributed locks.
Use the setnx(), get(), ...
Posted on Sun, 22 Sep 2019 00:49:21 -0700 by kansaschuck
When I first came into contact with Cache, it was in WebForm. When I first came into contact with Cache, I never forgot that cache was the Pinyin for car cleaning.
Client Browser Cache https://blog.csdn.net/y874961524/article/details/61419716
CDN Caching Principle https://www.cnblogs.com/shijingxiang/articles/5179032.html
Aliyun CDN Open Set ...
Posted on Sat, 21 Sep 2019 07:43:45 -0700 by notsleepy
I remember when I was in love with my wife, one day I came to cook for my wife with a whim, and did it step by step according to the recipe. As a result, I almost burned the kitchen!!! My wife still remembers this.
As mentioned in the previous article, the main process of AbstractBeanFactory.getBean. Today, let's talk about the createB ...
Posted on Sat, 21 Sep 2019 02:59:19 -0700 by boiy
In the early stage, I took a private project and made an official website. I thought that all companies use vue technology stack, and the official website just can be used. nuxt Do it.
nuxt installation can follow the steps of the official website
// Default installation create-nuxt-app
yarn create nuxt-app <project-name>
Posted on Fri, 20 Sep 2019 22:23:43 -0700 by hchsk
1. The concept of operator overloading
Essence of operator overloading
Operator overloading rules
Implementation of Operator Overloading
2. Implementation of Complex Class
Compare operator overload
Assignment operator overloading
Posted on Thu, 19 Sep 2019 07:42:12 -0700 by elfynmcb
Strings, like tuples, can only be read but not written. Lists and dictionaries can nest anything, lists can nest lists
L = list("hello") # L = ['h', 'e', 'l', 'l', 'o']
Collections and dictionaries are disordered; lists, tuples, strings are ordered
Collections, dictionaries and l ...
Posted on Thu, 19 Sep 2019 05:01:51 -0700 by tdelobe
Chapter 8 Multithreading
_Multiprocess task processing is the simultaneous processing of tasks through multiple processes. Multiple PCBs have multiple virtual address spaces and execute different codes separately, which are not related to each other. Multithreading, on the other hand, ...
Posted on Thu, 19 Sep 2019 03:16:11 -0700 by compguru910
There are two main ways of docking express API interface: one needs to connect several express companies one by one for delivery, and each docking express company needs to develop more than ten interfaces, the development workload is cumbersome and complex. Or choose to use third-party logistics interface such as express bird docking, express b ...
Posted on Thu, 19 Sep 2019 02:53:16 -0700 by hayunna
Author: Maciej CieslarTranslator: Front-end witSource: dev
To ensure readability, this paper uses free translation instead of literal translation.
To read more good articles, please Punch GitHub Blog Hundreds of excellent articles a year are waiting for you!
To use methods on a given array, simply pass the . method names, which are defined on ...
Posted on Wed, 18 Sep 2019 17:12:03 -0700 by jonemo
I. Higher Order Functions
That is, to take one function as a parameter of another function
def plus(a): #Functions defined as self-adding one
def fun (x,y,plus):
return plus(x),plus(y) #Define a func ...
Posted on Wed, 18 Sep 2019 05:08:15 -0700 by cbj4074