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Deeply understand the underlying data structure of Redis List queue CentOS 7 installs redis6.25 in combination with the docker image configuration method (redis.conf file is attached) list underlying data structure: linkedList linked list Zip list zip list quickList Linked list: LinkedList The two-way linked list of the leading nod ...

The reason why you need to create a media class to store tokens is that the filter interface to be used later. 1, Create ThreadLocalToken class Purpose of creating ThreadLocalToken class: Create the ThreadLocalToken class in com.example.emos.wx.config.shiro. Write the following code: package com.example.emos.wx.config.shiro; import org.sp ...

In an App login scenario, there are two important information: account and device number The device number identifies an installed App and is generated when the App is installed. If it is uninstalled and reinstalled, a new device number will be generated. Suppose there is a demand, it is necessary to check whether the active account and equip ...

1.redis client tool jedis 1.1 Introduction and preparation of jedis Introduction to 1.1.1 jedis Jedis is a client in Java that operates on redis, similar to accessing the mysql database through jdbc. To implement jedis in java's mevan, you need to import the following dependencies: <dependency> <groupId>redis.clients</g ...

This paper mainly introduces the design of redis high availability scheme using official sentinel. Redis Sentinel Sentinel introduction Sentinel is a highly available solution officially provided by redis for clusters. In actual projects, sentinel can be used for automatic redis failover to reduce the workload of manual intervention. In a ...

1. First two files <1> Tasks (general name fixed) tasks.py from celery import Celery import time # app = Celery('tasks') app = Celery('celery_name', backend='redis://127.0.0.1:6379/3', broker='redis://127.0.0.1:6379 / 2 ') # configure the backend and broker of the celery # app.config_from_object('tasks') #Co ...

summary spring has defined Cache and CacheManager interfaces since 3.1 to unify different caching technologies. It also supports the use of JCache(JSR-107) annotations to simplify our development The implementation of Cache interface includes RedisCache, EhCacheCache, ConcurrentMapCache, etc Each time a method requiring caching is called, spr ...

1 redis backup It is recommended that rdb and aof be turned on simultaneously.rdb is on by default and aof is off by default.Refer to rdb and aof for additional details http://blog.csdn.net/guoxingege/article/details/48780745 1.1Redis.confConfiguration Details requirepass 123456 ## The following is the rdb confi ...

docker builds redis cluster 1. Download the redis image docker pull redis 2. Prepare the configuration fileRedis.conf mkdir /home/docker/redis/ wget https://raw.githubusercontent.com/antirez/redis/3.0/redis.conf -O /home/docker/redis/redis.conf cd /home/docker/redis/ sed -i 's/# slaveof <masterip> <masterport>/slaveof red ...

In the development of high concurrency system, there are four tools to protect the system: diffluence, cache, degradation and flow restriction. Based on the author's experience, this paper introduces the related concepts, algorithms and conventional implementation of current limiting. Concept interp ...