This morning, a new colleague, Xiao Wang, suddenly asked me, "What is idempotency, Zhou Ge?"Then I explained to him that idempotency means that no matter how many requests you make, the result will be the same.When it comes to idempotency, you have to repeat the submission button. In theory, this is the same data. The database should ...
Posted on Tue, 23 Jun 2020 21:12:08 -0400 by mania
Performance tuning is an essential topic for all components in the system architecture, and Elasticsearch is no exception. Although the default configuration in Elasticsearch is already excellent, it does not mean that it is perfect. Some of the necessary practices need to be understood.
Open Slow Query Log
Slow query log is an importan ...
Posted on Tue, 23 Jun 2020 19:58:56 -0400 by Ali25m
What I bring you today is the basic knowledge of Java, including the basic syntax of Java, such as Java, variables, constants, data types, operators, various selection structures, loop structures, arrays, etc!!! The content and steps are super detailed, with source code of various cases (you can directly use O(∩)_ ∩)O~)!!! After readin ...
By designing a program of the book management system, we can make full use of the main knowledge points of the course, consolidate the understanding of modular program design and file operation, and improve the software programming ability.
2. Points of knowledge involved
Loops, branching sta ...
Posted on Mon, 22 Jun 2020 21:15:22 -0400 by theblacksheep
There is a cloud in the old saying:
Tao is the spirit of art, and art is the body of Tao; Tao is the rule of art, and art leads to Tao.
Among them, "Tao" refers to "law, truth and theory", and "technique" refers to "method, skill and technology" ...
Posted on Mon, 22 Jun 2020 02:05:39 -0400 by greenberry
Author: little brother FuBlog: https://bugstack.cn -Original series of special articles
Precipitation, sharing, growth, so that they and others can have a harvest! 😄
The importance of persistence
Beginners are often very ignorant of programming, almost in the process of learning will encounter a variety of problems, even if other pe ...
Posted on Sun, 21 Jun 2020 22:13:43 -0400 by forced4
After reading the official documents and reading some Newtonsoft source code, I have a new understanding of it. First, I summarize six super-classical and practical features and share them with you. Say nothing more. Let's have a look at them.
2. Characteristic analysis
1. Code Formatting
If you use it directly JsonConvert.Ser ...
Posted on Sat, 20 Jun 2020 21:28:17 -0400 by j.smith1981
Take the pizza shop as an example:
You can order pizza in the pizza store;
According to the requirements of customers, pizza produces different flavors.
Simple factory and static factory
Simple factory is not a design pattern, but a programming pattern; but it is often used.
Posted on Sat, 20 Jun 2020 03:06:27 -0400 by TechMistress
Implementing point-to-point chat room under RedHat
Point to point chat room provides a platform for people to communicate, and it has a high degree of privacy and convenience. By providing a perfect network chat system, we can achieve the purpose of communication and contact between people.
Posted on Fri, 19 Jun 2020 22:13:07 -0400 by daftdog
AI: Keras PyTorch MXNet TensorFlow PaddlePaddle Deep Learning Actual Warfare (Update from time to time)
Learn what premade estimator is
applicationTf.estimatorComplete th ...
Posted on Fri, 19 Jun 2020 21:28:33 -0400 by Mikkki