Linux Installation of MySQL and Basic Operations

In order to provide more abundant and powerful web application functions, it often needs the support of background database, web programming and other roles. In general small and medium-sized enterprises, the most commonly used database is MySQL. MySQL is a truly multi-threaded, multi-user SQL database ...

Posted on Thu, 01 Aug 2019 20:21:38 -0700 by blyz

Wechat applet and cloud development

Basic concepts of Wechat applet Three basic capabilities of small program cloud development: cloud database, cloud function and cloud storage Java, NodeJS, JavaScript, HTML5, CSS3, VueJs, ReactJs, Front-end Engineering, Front-end Architecture Introduction to small program development, development process, the use of cloud developme ...

Posted on Thu, 01 Aug 2019 19:19:42 -0700 by intenz

EMQ X rule engine series stores messages to MySQL database

Scenario introduction This scenario requires storing qualified messages under EMQ X specified topics into the MySQL database. In order to facilitate subsequent analysis and retrieval, message content needs to be split and stored. In this scenario, the device side reports the following information: Subject: cmd/state/:id, in which ID represents ...

Posted on Wed, 31 Jul 2019 04:50:41 -0700 by Drace

Simple application of Srping boot + ECharts

In a project, the project requires a broken line chart to show the number of Statistics online (the number of statistics is stored in the database). No broken line map has been done before, so I found it online. Baidu's ECharts, after reading several astronomical documents, tested them (because the documents written on the official website are ...

Posted on Wed, 31 Jul 2019 00:39:13 -0700 by viveleroi0

MongoDB Learning Notes - Introduction to MongoDB, Data Types and Help Commands

MongoDB Learning Notes (1) - Introduction to MongoDB and Data Types The version of MongoDB used in this article is 4.0.10 > db.version(); 4.0.10 Introduction to MongoDB 1. Characteristics of MongoDB MongoDB is a scalable and high-performance NoSQL database written in C++ language. It aims to provide a high-performance scalable data storage s ...

Posted on Tue, 30 Jul 2019 04:08:30 -0700 by daggardan

Small Program Cloud Development Practical-Pocket Tool "Today in History"

Preface This project is a small program based on cloud development. This article selects a page in the project - today in history to share cloud development, which will involve cloud functions and cloud databases. As it is a practical project, the basic knowledge of small programs should be transferred to the official documents. This article w ...

Posted on Mon, 29 Jul 2019 23:10:37 -0700 by aznkidzx

SpringBoot Spring Security OAuth 24 token generation methods

Recently, the project is going to use Spring Security OAuth 2 for authority authentication management, so first, understand the principle of Spring Security OAuth and make a demo for reference. Project address I. Project knowledge preparation What is OAuth2 The standard for OAuth 2.0 is RFC 6749 OAuth introduces an authorization layer to s ...

Posted on Mon, 29 Jul 2019 20:57:30 -0700 by globetrottingmike

Initial level Oracle 12C database migration to Oracle 18C and some basic data query methods

The good news is that the assessment project has been completed independently, but it has exceeded the scheduled date. I don't know what the final evaluation will be. My heart is still a little cold! However, in the future, I will not simply take the needs of the company as my own needs to develop, but will follow the trend to learn useful know ...

Posted on Mon, 29 Jul 2019 04:50:28 -0700 by gilbertwang

Java web login registration interface introductory tutorial

Preface: The blogger is a self-taught Java, but even the basic knowledge of "Java from Initial to Proficient" has not been read. Because of the need of internship, it is necessary to develop a simple login and registration interface with JavaEE (J2E). Through powerful search engine and num ...

Posted on Mon, 29 Jul 2019 02:25:58 -0700 by cordoprod

Spring Cloud Gateway Extension Support Dynamic Current Limitation

I shared an article before. How to Play with Spring Cloud Gateway's Native Interface Current Limiting The core is to rely on the current limiting filter provided by Spring Cloud Gateway by default Deficiencies of native RequestRate Limiter collocation method spring: cloud: gateway: routes: - id: requestratelimiter_route ...

Posted on Sun, 28 Jul 2019 23:54:49 -0700 by ecaandrew