Commonly used locking methods are:
(Learning video sharing: redis video tutorial)
1. Add incr Lock
<?php $redis = new Redis(); $redis->connect('127.0.0.1'); $redis->multi(); $redis->incr('number'); //$redis->decr('number'); //$redis->expire('number', -1); var_dump($redis->get('number')); var_dump($redis->ttl('number'));
2. Setnx lock
<?php $redis->setnx('name', 'felix'); var_dump($redis->get('name')); var_dump($redis->ttl('name'));
3. Set lock
<?php $redis->set('like', 'chuangxi', ['nx', 'ex' => 10]); //$redis->del('like'); var_dump($redis->get('like')); var_dump($redis->ttl('like'));
4. Prevent deadlock
<?php
$isLock = false;
do {
$isLock = $redis->set('like', 'a', ['nx', 'ex' => 10]);
if($isLock) {
if($redis->get('like') == 'a') {
//执行逻辑
$redis->del('like');
continue;
}
} else {
usleep(5000);
}
} while (!$isLock);
//redis事务
$redis->set();
$redis->watch(['number', 'like']);Related recommendations: redis tutorial
The above is the detailed content of What are the common ways to lock redis?. For more information, please follow other related articles on the PHP Chinese website!
Redis: Understanding NoSQL ConceptsApr 21, 2025 am 12:04 AMRedis is a NoSQL database suitable for efficient storage and access of large-scale data. 1.Redis is an open source memory data structure storage system that supports multiple data structures. 2. It provides extremely fast read and write speeds, suitable for caching, session management, etc. 3.Redis supports persistence and ensures data security through RDB and AOF. 4. Usage examples include basic key-value pair operations and advanced collection deduplication functions. 5. Common errors include connection problems, data type mismatch and memory overflow, so you need to pay attention to debugging. 6. Performance optimization suggestions include selecting the appropriate data structure and setting up memory elimination strategies.
Redis: Real-World Use Cases and ExamplesApr 20, 2025 am 12:06 AMThe applications of Redis in the real world include: 1. As a cache system, accelerate database query, 2. To store the session data of web applications, 3. To implement real-time rankings, 4. To simplify message delivery as a message queue. Redis's versatility and high performance make it shine in these scenarios.
Redis: Exploring Its Features and FunctionalityApr 19, 2025 am 12:04 AMRedis stands out because of its high speed, versatility and rich data structure. 1) Redis supports data structures such as strings, lists, collections, hashs and ordered collections. 2) It stores data through memory and supports RDB and AOF persistence. 3) Starting from Redis 6.0, multi-threaded I/O operations have been introduced, which has improved performance in high concurrency scenarios.
Is Redis a SQL or NoSQL Database? The Answer ExplainedApr 18, 2025 am 12:11 AMRedisisclassifiedasaNoSQLdatabasebecauseitusesakey-valuedatamodelinsteadofthetraditionalrelationaldatabasemodel.Itoffersspeedandflexibility,makingitidealforreal-timeapplicationsandcaching,butitmaynotbesuitableforscenariosrequiringstrictdataintegrityo
Redis: Improving Application Performance and ScalabilityApr 17, 2025 am 12:16 AMRedis improves application performance and scalability by caching data, implementing distributed locking and data persistence. 1) Cache data: Use Redis to cache frequently accessed data to improve data access speed. 2) Distributed lock: Use Redis to implement distributed locks to ensure the security of operation in a distributed environment. 3) Data persistence: Ensure data security through RDB and AOF mechanisms to prevent data loss.
Redis: Exploring Its Data Model and StructureApr 16, 2025 am 12:09 AMRedis's data model and structure include five main types: 1. String: used to store text or binary data, and supports atomic operations. 2. List: Ordered elements collection, suitable for queues and stacks. 3. Set: Unordered unique elements set, supporting set operation. 4. Ordered Set (SortedSet): A unique set of elements with scores, suitable for rankings. 5. Hash table (Hash): a collection of key-value pairs, suitable for storing objects.
Redis: Classifying Its Database ApproachApr 15, 2025 am 12:06 AMRedis's database methods include in-memory databases and key-value storage. 1) Redis stores data in memory, and reads and writes fast. 2) It uses key-value pairs to store data, supports complex data structures such as lists, collections, hash tables and ordered collections, suitable for caches and NoSQL databases.
Why Use Redis? Benefits and AdvantagesApr 14, 2025 am 12:07 AMRedis is a powerful database solution because it provides fast performance, rich data structures, high availability and scalability, persistence capabilities, and a wide range of ecosystem support. 1) Extremely fast performance: Redis's data is stored in memory and has extremely fast read and write speeds, suitable for high concurrency and low latency applications. 2) Rich data structure: supports multiple data types, such as lists, collections, etc., which are suitable for a variety of scenarios. 3) High availability and scalability: supports master-slave replication and cluster mode to achieve high availability and horizontal scalability. 4) Persistence and data security: Data persistence is achieved through RDB and AOF to ensure data integrity and reliability. 5) Wide ecosystem and community support: with a huge ecosystem and active community,
Hot AI Tools
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
Undress AI Tool
Undress images for free
Clothoff.io
AI clothes remover
Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!
Hot Article
Hot Tools
EditPlus Chinese cracked version
Small size, syntax highlighting, does not support code prompt function
MantisBT
Mantis is an easy-to-deploy web-based defect tracking tool designed to aid in product defect tracking. It requires PHP, MySQL and a web server. Check out our demo and hosting services.
Zend Studio 13.0.1
Powerful PHP integrated development environment
Safe Exam Browser
Safe Exam Browser is a secure browser environment for taking online exams securely. This software turns any computer into a secure workstation. It controls access to any utility and prevents students from using unauthorized resources.
mPDF
mPDF is a PHP library that can generate PDF files from UTF-8 encoded HTML. The original author, Ian Back, wrote mPDF to output PDF files "on the fly" from his website and handle different languages. It is slower than original scripts like HTML2FPDF and produces larger files when using Unicode fonts, but supports CSS styles etc. and has a lot of enhancements. Supports almost all languages, including RTL (Arabic and Hebrew) and CJK (Chinese, Japanese and Korean). Supports nested block-level elements (such as P, DIV),
