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How to implement SpringBoot integration with Redis cache

Cache components supported by SpringBoot In SpringBoot, the cache management and storage of data relies on the cache-related org.springframework.cache.Cache and org.springframework.cache.CacheManager cache manager interfaces in the Spring framework. If there is no bean component of type CacheManager or a CacheResolver cache resolver named cacheResolver defined in the program, SpringBoot will try to enable the following cache components (in the specified order): (1) Generic (

Jun 02, 2023 pm 09:28 PM

redisSpringBoot

Redis+SpringBoot case analysis

1. Project environment Front-end technology stack: Vue-Cli Front-end software: WebStorm2020.3 Front-end style: Bootstrap Back-end technology stack: SpringBoot Back-end software: IntelliJIEDA2019 JavaJDK: 1.8 Server: Alibaba Cloud Centos7 Others: MyBatis, Redis, MySql, Docker, Shiro 2. Project demonstration project source code: shoppingProject01_pub:version6.0 project reference: Project05; bad person_Vue-Cli; bad person_Redis; bad person_Axios; Shang Silicon Valley_Redis project

Jun 02, 2023 pm 09:09 PM

redisSpringBoot

How to use redis delayed double delete strategy

In the current environment, we usually prefer redis cache to reduce our database access pressure. However, we will also encounter the following situation: when a large number of users access our system, they will first query the cache. If there is no data in the cache, they will query the database, then update the data to the cache, and if the data in the database has changed It needs to be synchronized to redis. During the synchronization process, the data consistency between MySQL and redis needs to be ensured. It is normal for a short data delay to occur during this synchronization process, but in the end it is necessary to ensure the consistency between mysql and the cache. //We usually use redis logic //Usually we query reidsStringvalue=RedisUt first

Jun 02, 2023 pm 08:32 PM

redis

How to solve the problem that springboot cannot connect to redis

The first way is to check whether the firewall opens port 6379 and check the firewall status systemctlstatusfirewalld if the firewall is not started. You can choose to look directly at the latter two methods. Or just open the firewall, and then continue with the following steps: open the port firewall-cmd--zone-public--add-port=6379/tcp--permanent#Display success--permanent means it will take effect permanently. Without this parameter, it will be invalid after restarting and restart the firewall. firewall-cmd--reload#Display successView the open ports of the firewall fire

Jun 02, 2023 pm 08:31 PM

redisSpringBoot

What is the method for using Redis in ThinkPHP framework in Pagoda?

Redis is a commonly used non-relational database, mainly used for data caching. The data is saved in the form of key-value, and the key values map to each other. Its data storage is different from MySQL. Its data is stored in memory, so data reading is relatively fast, which is very good for high concurrency. Regarding the installation of redis, install the pagoda panel on the server or virtual machine to install redis, so that you can use redis very easily. Remember that when installing redis, you must not only install the redis software, but also enter the PHP version used by the project to install the redis extension. Then open the redis software 1. First, find redis in the installation panel of the pagoda and click Install. 2. Install redi

Jun 02, 2023 pm 08:31 PM

redisthinkphp

Python Redis data processing methods

1. Foreword Redis: RemoteDictionaryServer, that is, remote dictionary service. The bottom layer of Redis is written in C language. It is an open source, memory-based NoSql database. Because Redis performance far exceeds other databases, it also supports clustering, distribution, master-slave synchronization, etc. Advantages, so it is often used in scenarios such as caching data and high-speed reading and writing. 2. Preparation Let’s take the installation of Redis-Server on the cloud server Centos7.8 as an example. First, install the Redis database on the cloud server #Download epel warehouse yuminstallepel-release #Install redisyuminstallredis Then, via vim command

Jun 02, 2023 pm 08:19 PM

Pythonredis

Redis usage example analysis

The first part: Native jedis connects to redis. First of all, we need to understand that when we originally used mysql, we used jdbc to connect to the database. In the same way, if we connect to redis here, we must use jedis. The first step: Create a new java project, import the package to create a new java project, and import the package redis.clientsjedis3.3.0com.alibabafastjson1.2.73. Step 2: Open the redis service, write a method to open the redis service, create a new test class, and write a method publicclassPing{publicstaticvoidmain (String[]args){Jedi

Jun 02, 2023 pm 08:04 PM

redis

What are the common commands for keys and strings in Redis?

Redis related knowledge The default port number of Redis is 6379 and there are 16 databases by default. Similar to array subscripts starting from 0, the initial default is to use library No. 0. Use the command select to switch databases. Such as: select8. Unified password management, all libraries have the same password. dbsize checks the number of keys in the current database. flushdb clears the current library. flushall kills all libraries. Redis is a single-threaded + multi-channel IO multiplexing technology. Multiplexing refers to using a thread to check the readiness status of multiple file descriptors (Socket), such as calling the select and poll functions, passing in multiple file descriptors, and if one file descriptor is ready, return, otherwise blocked straight

Jun 02, 2023 pm 07:20 PM

redis

What are the application scenarios of Redis?

What are the application scenarios of Redis? Caching: This should be the main function of Redis, and it is also an essential mechanism for large websites. Proper use of cache can not only speed up data access, but also effectively reduce the pressure on back-end data sources. Shared Session: For some services that rely on the session function, if you need to change from a single machine to a cluster, you can choose redis to manage the session uniformly. Message queue system: The message queue system can be said to be an essential basic component of a large website because it has the characteristics of business decoupling and non-real-time business peak shaving. Redis provides publish and subscribe functions and blocking queue functions. Although it is not powerful enough compared with professional message queues, it is suitable for general

Jun 02, 2023 pm 07:10 PM

redis

How to use Gaussian Redis to implement secondary index

1. Background When mentioning index, the first impression is the term database. However, Gaussian Redis can also implement secondary index! ! ! Secondary indexes in Gaussian Redis are generally implemented using zset. Gaussian Redis has higher stability and cost advantages than open source Redis. Using Gaussian Rediszset to implement business secondary indexes can achieve a win-win situation in performance and cost. The essence of indexing is to use ordered structures to speed up queries, so numeric and character type indexes can be easily implemented through the Zset structure Gaussian Redis. •Numeric type index (zset is sorted by score): •Character type index (zset is sorted lexicographically when the scores are the same

Jun 02, 2023 pm 06:53 PM

redis

How to use redis in ThinkPHP5

Premise: Because this article mainly focuses on using redis in thinkPHP5, I will not specifically explain the installation of redis. However, I would like to remind you that after installing redis, be sure to enable the php.ini extension, otherwise you will still be unable to use redis. . Configuration 1. Students who can use ThinkPHP5 know that TinkPHP5 encapsulates the cache class. We only need to fill in the cache configuration items in the cache in /application/congfig.php to use it (as shown below). 2. From the /thinkphp/library/think/cache/driver/Redis.php file

Jun 02, 2023 pm 06:25 PM

redisthinkphp

How to set redis to enable auto-start on Linux

When redis starts up in centos7, create the redis.service file vi/etc/systemd/system/redis.service in the system service directory and write the following content: [Unit]Description=redis-serverAfter=network.target[Service]Type =forkingExecStart=/usr/local/redis/bin/redis-server/usr/local/redis/bin/redis.conf (fill in the location of your redis configuration file here

Jun 02, 2023 pm 05:58 PM

Linuxredis

How does Springboot integrate redis to achieve simple data writing and reading?

引入maven依赖：org.redissonredisson-spring-boot-starter${redission}redisUtil.javapackagecom.gllic.workweixin.utils;importorg.redisson.api.RBucket;importorg.redisson.api.RedissonClient;importorg.springframework.stereotype.Component;importjavax.annotation.R

Jun 02, 2023 pm 05:25 PM

redisSpringBoot

How to install redis on centos7

1. Install gcc dependencies. Since redis is developed in C language, you must first confirm whether the gcc environment (gcc-v) is installed before installation. If it is not installed, execute the following command to install it [root@localhostlocal]#yuminstall-ygcc 2. Download and Unzip the installation package [root@localhostlocal]#wgethttp://download.redis.io/releases/redis-5.0.3.tar.gz[root@localhostlocal]#tar-zxvfredis-5.0.3.tar.gz 3. cd Switch to redi

Jun 02, 2023 pm 05:20 PM

redisCentOS