Spring 5.0 Chinese Version - 3.9

3.9 Annotation-based container configuration Is annotation better than XML in configuring Spring? The introduction of annotation-based configuration raises the question of whether this approach is better than XML-based configuration. The short answer depends on the situation. The longer answer is that each approach has its advanta ...

Posted by geek_girl_2020 on Wed, 15 May 2019 16:12:27 -0700

MySQL 8.0 Installation and Configuration Tutorial under macOS

I. Preface 1. The main contents of this course apply Homebrew Install MySQL MySQL 8.0 Foundation for Configuration MySQL shell management common grammar examples (users, permissions, etc.) MySQL character encoding configuration MySQL Remote Access Configuration 2. Environmental Information and Scope of Application of this Course enviro ...

Posted by Sneo on Wed, 15 May 2019 05:05:26 -0700

Openresty reverse proxy returns non-200 for retry to custom upstream

By using error_page instruction, the status codes of 404, 302 etc. returned by the reverse proxy are processed twice for sub-requests. Client - [1] - > nginx proxy < - [2] - > Site A (return 404, 302) |[3] V Site B (return 200) For example, as a CDN service, ...

Posted by guido88 on Tue, 14 May 2019 18:33:26 -0700

Machine Learning-An Improved Matching Algorithms for Dating Websites Based on KNN Classification

1 Project Introduction An APP user has been using online dating software to find a suitable date. Although dating websites recommend different people, she doesn't like everyone. After summing up, she found that she had met three types of people: People who don't like it (3) Charming People (2) Charming People (1) An APP user hopes that the cl ...

Posted by marcs910 on Tue, 14 May 2019 17:43:10 -0700

grpc implements a more complex chat room

background Connect with above https://my.oschina.net/tuxpy/blog/1631953 Previously, a two-way flow was implemented through grpc. All stream s exist in a sync.Map. If the pressure of chat room is high at this time, how to expand? To put it simply, how to do load balancing. Prior to https://segmentfault.com/a/1190000008672912 Having seen an artic ...

Posted by EmperorDoom on Tue, 14 May 2019 16:21:58 -0700

Summary of Alert Dialog

In the development of APP, we often need to set up a pop-up box by clicking on a button. In this pop-up box, we do some selection and screening functions. This is Alert Dialog in Android. Here, let's talk about how to use the AlertDialog class that comes with the system. The first is the simplest use, as follows: A ...

Posted by richtom80 on Tue, 14 May 2019 14:11:55 -0700

Modify the encoding configuration file in MySQL and distinguish `utf8'from `utf8mb4'.

Modifying Coding Profile in MySQL Be careful: Python runtime environment is Python 3.5.2 The operating system is Linux Ubuntu 16.04 MySQL version is 5.7.23 Install MySQL Service Under Linux, you can install it directly with the command line sudo apt-get install mysql-server of Linux. During the installat ...

Posted by doa24uk on Tue, 14 May 2019 13:14:51 -0700

Python Road [Part 5]: File Processing Based on Python

Reading catalogue I. File Operation 1, introduction Computer system is divided into three parts: computer hardware, operating system and application program. Applications written in python or other languages that want to save data permanently must be stored in the hard disk, which involves the application to operate hardware. As we all know ...

Posted by cbrknight on Tue, 14 May 2019 12:58:36 -0700

NO.5: The Way to Learn python by Yourself - Standard Library, Regular Expressions

Introduction How time flies! At last, I have finished my CET-6, and I have to catch up with my progress in Python study. Okay, start the week. text Modular The essence of module is the file at the end of'.py'. It can be used to organize Python code logically. It can be variables, functions, classes or logic, mainly to achieve a function. If the ...

Posted by gitosh on Tue, 14 May 2019 08:32:42 -0700

Android Development Artifact: OkHttp Framework Source Parsing

Preface HTTP is our modern application network for exchanging data and media streams. Effective use of HTTP can save bandwidth and load data faster. Square's open source OkHttp network request is an efficient HTTP client. Previous knowledge is limited to the use of framework API. After touching the actual work, I know my lack of knowledge. So ...

Posted by ladokha on Tue, 14 May 2019 05:32:54 -0700