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How to use the Redis plug-in in IDEA to connect to the Redis server

How to use the Redis plug-in in IDEA to connect to the Redis server

The Redis plug-in in IDEA is a visualization tool for Redis. You can connect to the Redis server through the plug-in and perform addition, deletion, modification and query operations. 1. IDEA installs the Redis plug-in 1. Click File->Setting2, click Plugins3, enter redis4 in BrowseRepositories, click Redis plug-in 5, download and restart 2. IDEA connects to the Redis server. After installation, use the right toolbar or File-> Setting->OtherSettings->NoSqlServer can find the window to connect to Redis, as shown below: My red

May 28, 2023 pm 06:27 PM
redis idea
Example analysis of RDB persistence in Redis

Example analysis of RDB persistence in Redis

1. Introduction to RDB RDB is a method used by Redis for persistence. It writes a snapshot of the data set in the current memory to the disk, which is a Snapshot snapshot (all key-value pair data in the database). During recovery, the snapshot file is read directly into memory. 2. Triggering method RDB has two triggering methods, namely automatic triggering and manual triggering. ①. Automatic triggering: Under SNAPSHOTTING in the redis.conf configuration file, we have introduced it in this article. ①. save: This is used to configure the RDB persistence conditions that trigger Redis, that is, when to save the data in the memory to the hard disk. For example "savemn". Represents the data set within m seconds

May 28, 2023 pm 06:11 PM
redis rdb
How to use the SDS data structure of Redis

How to use the SDS data structure of Redis

Preface Several basic data structures of Redis include String, Hash, List, Set, and SortedSet. These are the most common ones and can also be viewed on the official website. arrive. String As mentioned earlier, a simple dynamic string SDS (SimpleDynamicString) structure is designed to represent a string. This data structure can improve the efficiency of string operations and save binary data. Let’s think about a question first: Redis is implemented in C language, so why didn’t the string implementation method of C language be reused and SDS was chosen? char* string array C language implements string using c

May 28, 2023 pm 06:07 PM
redis sds
What is the method for implementing Redis distributed lock?

What is the method for implementing Redis distributed lock?

1. What is a distributed lock? A distributed lock is a lock that is visible and mutually exclusive to multiple processes in a distributed system or cluster mode. Implementing distributed locks based on Redis: 1. Acquire lock mutual exclusion: ensure that only one thread can acquire the lock; non-blocking: try to acquire the lock, return true if successful, false if failed; add lock expiration time to avoid deadlock caused by service downtime . SETlockthread1NXEX102, release the lock manually; DELkey1 timeout release, add a timeout lock when acquiring the lock; 2. Code example packagecom.guor.utils;importorg.springframework.data.redis.core.Stri

May 28, 2023 pm 05:58 PM
redis
How to use redis optimistic lock and pessimistic lock

How to use redis optimistic lock and pessimistic lock

Concept Redis is an in-memory key-value storage system that supports a variety of data structures, such as strings, hashes, lists, etc. Redis provides two locking mechanisms, namely optimistic locking and pessimistic locking. Optimistic lock Optimistic lock is an optimistic concurrency control strategy. It believes that data will not be occupied by other threads in most cases. Therefore, every time the data needs to be modified, the lock will not be acquired, but modified directly. In Redis, optimistic locking can be implemented through the WATCH and CAS commands. The WATCH command is used to monitor one or more keys, and the CAS command is used to check and update the value of the key. For example, suppose you have a counter key that multiple clients need to operate on. Using optimistic locking, each client can

May 28, 2023 pm 05:58 PM
redis
What is the method of PHP+Redis caching?

What is the method of PHP+Redis caching?

Have you ever thought about how when PHP uses redis as a cache: 1. The front and back modules share the Model layer; 2. However, each Model class cannot be cached, which is a waste of Redis resources; 3. The front and back modules can decide freely Read data from the database or cache; 4. No redundant code; 5. Easy to use. Here we first show the final effect of the implementation. Install immediately using the command: $composerinstallyeszao/cache1 Final effect Assume that in the MVC framework, the model layer has a Book class and a getById method, as follows: classBook{publicfunctiongetById($id){

May 28, 2023 pm 05:28 PM
PHP redis
What are the relevant commands to start redis under server linux?

What are the relevant commands to start redis under server linux?

1. Download the installation package from the redis official website 2. Upload the installation package to FianlShell 3. Create the corresponding file path, switch to the folder where the installation package is located and enter the command: (the path inside will be changed according to the actual situation) tar-zvxfredis-6.0. 5.tar.gz-C/urs/local/redis4. Compile: (gcc is required. If gcc has not been installed on Linux, you need to install it first) Use the command: yuminstallgcc-c++5, then enter redis-6.0.5, and then Execute make6 and enter the installation command: makePREFIX=/urs/local/redisinsta

May 28, 2023 pm 05:22 PM
Linux redis
How to define the Object structure of redis

How to define the Object structure of redis

Introduction to the two-tier data structure of Redis. One of the reasons for the high performance of redis is that each of its data structures is specially designed and supported by one or more data structures. These flexible data structures are relied upon to improve reading performance. Fetch and write performance. If you want to understand the data structure of redis, you can discuss it from two different levels: The first level is from the user's perspective. This level is also the calling interface that Redis exposes to the outside, such as: string, list, hash ,set,sortedset. The second level is from the perspective of internal implementation, which belongs to the lower level implementation, such as: dict, sds, ziplist, quicklist, skiplis

May 28, 2023 pm 05:20 PM
redis object
How to use Redis distributed lock in Laravel

How to use Redis distributed lock in Laravel

Create lock useIlluminateSupportFacadesCache;$lock=Cache::lock('foo',10);if($lock->get()){//Process business logic sleep(3);$lock->release();} Get The get method can receive a closure by locking indefinitely and automatically releasing it. After the closure is executed, Laravel will automatically release the lock. Cache::lock('foo')->get(function(){//Get the indefinite lock and self

May 28, 2023 pm 05:07 PM
redis laravel
How to build and install Redis in centOS7 environment

How to build and install Redis in centOS7 environment

1. Upload the Redis package and use the tar-zxvf command to decompress it. 2. In the decompressed package, execute the make command to compile. 3. Execute the makeinstall command; makeinstallPREFIX=/usr/local/redis (there is no configure file after Redis is decompressed. You can This step specifies the installation directory; the premise is to add the folder mkdir/usr/local/redis first) 4. Modify the configuration > 1. Copy the configuration file: In the installation directory, see the conf folder in the directory at the same level as bin, and use the cp command to decompress it Copy the redis.conf file in the last Redis directory to the newly created conf directory&gt

May 28, 2023 pm 05:01 PM
redis CentOS
What is the method used in Redis key-value design?

What is the method used in Redis key-value design?

Irregularities in the use of Redis: The key names stored in Redis are irregular and arbitrary; Redis is used as a repository, there is a risk of data loss, and there is no reloading plan; Redis caches keys without setting an expiration time, and caches low-frequency data occupies a large amount memory, causing the service to crash; Redis caches a large number of bigkeys, which will occupy a large amount of network bandwidth when the application is obtained, and deletion can easily cause congestion; improper use of the Redis client may cause other client connection timeouts. The reason may be that the client password is incorrect and not used. Connection pool, a large number of connection retries lead to system port resource consumption; improper use of Redis client commands leads to a large number of slow queries, affecting other application services

May 28, 2023 pm 04:44 PM
redis
How to use redis to implement caching in odoo

How to use redis to implement caching in odoo

Using Redis to implement caching in Odoo can improve system performance and avoid frequent database queries. The following are the steps to implement Odoo caching using Redis: 1. To install Redis, you first need to install the Redis database. You can refer to the official documentation for installation. 2. Install the PythonRedis module. To use Redis in Odoo, you need to install the PythonRedis module. You can use the pip command to install pipinstallredis3 and configure Odoo. Add the following lines to the Odoo configuration file: redis_host=your_redis_hostredis_port=your_redis_portre

May 28, 2023 pm 04:40 PM
redis odoo
How to install redis on Linux system

How to install redis on Linux system

Redis is an open source remote dictionary service written in ANSIc language and provides APIs in multiple languages. Once you download the Redis installation package, go to the redis official website to download the reids installation package. The redis official website only provides Linux installation packages by default, so you don’t have to worry about downloading the Windows installation package. The author downloaded redis-3.2.1.tar.gz. The downloaded is the redis source code. You should use the source code installation method to install redis. 2. Install redis\1. Unzip: tar-zxvfredis-3.2.1.tar.gz\2. Enter the decompressed directory and perform the compilation operation: maketest\3. After the compilation test is completed, exit

May 28, 2023 pm 04:31 PM
Linux redis
How to implement Redis7.0 deployment cluster

How to implement Redis7.0 deployment cluster

Redis7.0 deployment cluster detailed version Cluster architecture: A cluster uses a network to connect several computers and provides a unified management method so that it can present the service effect of a single machine to the outside. The role of the cluster: disperse the access pressure of a single server and achieve Load balancing disperses the storage pressure of a single server to achieve scalability and reduce business disasters caused by the downtime of a single server. 1. Redis cluster internal structure design. Data storage design. Through algorithm design, calculate the location where the key should be saved and allocate all storage space. The plan is to cut it into 16384 parts, and each host saves a part. Each part represents a storage space, not a key storage space. The key is placed in the corresponding storage space according to the calculated results to enhance scalability (there are new

May 28, 2023 pm 04:28 PM
redis

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