ZooKeeper Concepts and Use Summary

Dubbo registers and discovers services in a distributed environment through registries, and registries usually use ZooKeeper to study registry-related source code without ZooKeeper, so they learn the basic concepts of ZooKeeper and related API operations. ZooKeeper related concepts session The client and the server use TCP long connection, and ...

Posted on Fri, 23 Aug 2019 05:18:32 -0700 by louie

Feeling about the use of vuex and sessionStorage

I. vuex and session store are used separately Users send login requests (successful) User-related information is stored in session Storage The loading menu status is set to false and stored in vuex Jump to the home page (/) router.b ...

Posted on Fri, 23 Aug 2019 02:33:15 -0700 by Roble

keepalived application deployment

First, keep alived overview;2. Design principle;3. Case: Keepalived realizes dual hot standby; First, keep alived outline: Summary: keepalived is a powerful assistant tool designed for Lvs at first, which guarantees the failover of Lvs load dispatcher and the health checking of web nodes. It has been applied to many scenarios requiring fault ...

Posted on Tue, 20 Aug 2019 06:16:53 -0700 by bedted

Memcache Module of Python Standard Library Series

This module is an API interface for Python to operate memcached. Memcached official website: http://memcached.org/ Module Official Website: https://pypi.python.org/pypi/python-memcached/ What is Memcached? Free & open source, high-performance, d ...

Posted on Tue, 20 Aug 2019 00:11:19 -0700 by PyroX

Cookies and localStorage

Distinction and Practice of Local Storage, Cook and Session Storage 1. Cookie cookies. Its size limit is about 4KB, invented by Lou Montulli, a former employee of Netscape in March 1993. Its main purpose is to save login information, such as you can see "remember passwords" when you log into a website market, which is usually achieve ...

Posted on Mon, 19 Aug 2019 20:15:32 -0700 by supinum

Spring Security Resolution - Authorization Process

Spring Security Resolution (1) - Authorization Process _When learning Spring Cloud, when you encounter the content related to the authorized service oauth, you always have a half-knowledge, so you decide to first learn and collate the content, principles and design related to Spring Security, Spring Security Oauth2 and other privileges, certif ...

Posted on Mon, 19 Aug 2019 19:21:08 -0700 by pixelgirl

2. Spring Security Custom User Authentication Process

Custom landing page: Create a simple login.html landing page under the static folder <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Sign in</title> </head> <body> <h2&g ...

Posted on Mon, 19 Aug 2019 06:59:38 -0700 by wallabee

Remedial Series-springboot-restful Applications

1. Objectives Understand what Restful is, basic concepts and styles; Can use SpringBoot to implement a set of basic Reestful style interfaces; Use Swagger to generate clear interface documentation. 2. Getting Started with Restful What is RE ...

Posted on Sun, 18 Aug 2019 19:20:43 -0700 by matchu

Hi MySQL, Deadlock

Preface In everyday life, I believe you have experienced this kind of experience more or less: "Every rush hour, the originally wide traffic arteries become blocked for a while, the drivers and passengers are restless, the trumpet sounds loud and when the car is stuck in the middle of the intersection, it is embarrassing to find it, no ma ...

Posted on Sun, 18 Aug 2019 17:08:35 -0700 by adamlacombe

SQL Alchemy of Python Full Stack Road Series

SQL Alchemy is a Python SQL toolkit and object relational mapper that allows application developers full functionality and SQL flexibility. It provides a complete set of well-known enterprise-level persistence patterns, specifically for efficient and ...

Posted on Sat, 17 Aug 2019 02:18:37 -0700 by danoli3