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Introduction to commons-net package commons-net is Apache commons tool kit for network. It implements some common network tools, such as smtp, pop3, telnet, ftp, udp and so on. This paper mainly uses its FTP tool. Problems with FTP Tools When using the ftp tool provided by commons-net, it is found that the complete connection and login process ...

Why can't k8s pv and PVC bind together The statefuse is used to deploy statefuse applications. The application is always in pending state. Before starting, it introduces what statefuse is. In k8s, deployment is used to manage stateless applications. The statefuse is used to manage stateful applications, such as redis, mysql, zookper and othe ...

A filter that modifies the request path StripPrefix Filter StripPrefix Filter is a request path interception function that we can use to forward special services. application.yml is configured as follows: spring: cloud: gateway: routes: ...

This article is about one of the schemes of generating distributed Id. Besides redis schemes, there are other schemes such as database, snowflake algorithm, mogodb(object_id is also database) and so on. For redis, we often use them and have a lot of contacts. So we mainly talk about how to combine redis to generate distributed ID schemes. Dis ...

1. session Storage Structure in redis 2 stay The previous chapter When we talk about spring session storage in redis, we can see that every session storage in redis generates three records. The record format is as follows: This is very troublesome, why can't one by one correspond, do each other's angels, do a pair of three, very influential ...

Links to the original text: https://my.oschina.net/mohaiyong/blog/221261 At first, I thought that operating hash tables and lists under Spring was so dirty. In a trance, I found tha ...

When talking about the cluster scenario, the first problem you will encounter is session. On a single machine, session problems are always solved by web containers, which we mainly use, but clustering means multiple containers.If load balancing is to randomly distribute server access, it is easy to cause server A to log on and then go to server ...

1 Background Most projects now use caching basically. The author encountered this problem when integrating shiro+spring. It is also through consulting data that shiro and spring share spring's CacheManger. The cache managers included in Shiro are o ...

Preface Before that, we introduced the installation of RabbitMQ, the comparison of major message middleware, the core concept of AMQP, the use of management console, and the Quick Start RabbitMQ. This chapter introduces the advanced features of RabbitMQ. It is introduced in two parts (top/bottom). How can messages be delivered 100% successfu ...

turn Implementation Principle of Scanning Login ...