search
HomeDatabaseRedisHow redis implements load balancing

How redis implements load balancing

redis load balancing

When high concurrency occurs in a web project, it can be handled through load balancing. The slot allocation mechanism of redis is A load balancing mode

redis slot allocation mechanism:

In the cluster solution officially given by redis, data is allocated according to slots, and the key of each data It is mapped to a slot by the hash function. Redis-3.0.0 stipulates a total of 16384 slots. Of course, this can be configured according to the user's preferences. When the user puts or gets a piece of data, it first searches for the slot corresponding to the data, then searches for the corresponding node, and then puts the data into the node. In this way, the data is evenly distributed to each node in the cluster, thereby achieving load balancing on each node and giving full play to the power of the cluster. (redis tutorial)

public static void main(String[] args) {
        List<JedisShardInfo> shards = new ArrayList<JedisShardInfo>();
        shards.add(new JedisShardInfo("127.0.0.1", 6379));
        shards.add(new JedisShardInfo("127.0.0.1", 6380));

        ShardedJedisPool sjp = new ShardedJedisPool(new JedisPoolConfig(), shards);
        ShardedJedis shardClient = sjp.getResource();
        try {
            shardClient.set("A", "123");
            shardClient.set("B", "234");
            shardClient.set("C", "345");

            try {
                System.out.println(shardClient.get("A"));
            } catch (Exception e) {
                e.printStackTrace();
            }

            try {
                System.out.println(shardClient.get("B"));
            } catch (Exception e) {
                e.printStackTrace();
            }

            try {
                System.out.println(shardClient.get("C"));
            } catch (Exception e) {
                e.printStackTrace();
            }
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            sjp.returnResource(shardClient);
        }
    }

}

The above is the detailed content of How redis implements load balancing. For more information, please follow other related articles on the PHP Chinese website!

Statement
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Redis: Caching, Session Management, and MoreRedis: Caching, Session Management, and MoreMay 01, 2025 am 12:03 AM

Redis's functions mainly include cache, session management and other functions: 1) The cache function stores data through memory to improve reading speed, and is suitable for high-frequency access scenarios such as e-commerce websites; 2) The session management function shares session data in a distributed system and automatically cleans it through an expiration time mechanism; 3) Other functions such as publish-subscribe mode, distributed locks and counters, suitable for real-time message push and multi-threaded systems and other scenarios.

Redis: Exploring Its Core Functionality and BenefitsRedis: Exploring Its Core Functionality and BenefitsApr 30, 2025 am 12:22 AM

Redis's core functions include memory storage and persistence mechanisms. 1) Memory storage provides extremely fast read and write speeds, suitable for high-performance applications. 2) Persistence ensures that data is not lost through RDB and AOF, and the choice is based on application needs.

Redis's Server-Side Operations: What It OffersRedis's Server-Side Operations: What It OffersApr 29, 2025 am 12:21 AM

Redis'sServer-SideOperationsofferFunctionsandTriggersforexecutingcomplexoperationsontheserver.1)FunctionsallowcustomoperationsinLua,JavaScript,orRedis'sscriptinglanguage,enhancingscalabilityandmaintenance.2)Triggersenableautomaticfunctionexecutionone

Redis: Database or Server? Demystifying the RoleRedis: Database or Server? Demystifying the RoleApr 28, 2025 am 12:06 AM

Redisisbothadatabaseandaserver.1)Asadatabase,itusesin-memorystorageforfastaccess,idealforreal-timeapplicationsandcaching.2)Asaserver,itsupportspub/submessagingandLuascriptingforreal-timecommunicationandserver-sideoperations.

Redis: The Advantages of a NoSQL ApproachRedis: The Advantages of a NoSQL ApproachApr 27, 2025 am 12:09 AM

Redis is a NoSQL database that provides high performance and flexibility. 1) Store data through key-value pairs, suitable for processing large-scale data and high concurrency. 2) Memory storage and single-threaded models ensure fast read and write and atomicity. 3) Use RDB and AOF mechanisms to persist data, supporting high availability and scale-out.

Redis: Understanding Its Architecture and PurposeRedis: Understanding Its Architecture and PurposeApr 26, 2025 am 12:11 AM

Redis is a memory data structure storage system, mainly used as a database, cache and message broker. Its core features include single-threaded model, I/O multiplexing, persistence mechanism, replication and clustering functions. Redis is commonly used in practical applications for caching, session storage, and message queues. It can significantly improve its performance by selecting the right data structure, using pipelines and transactions, and monitoring and tuning.

Redis vs. SQL Databases: Key DifferencesRedis vs. SQL Databases: Key DifferencesApr 25, 2025 am 12:02 AM

The main difference between Redis and SQL databases is that Redis is an in-memory database, suitable for high performance and flexibility requirements; SQL database is a relational database, suitable for complex queries and data consistency requirements. Specifically, 1) Redis provides high-speed data access and caching services, supports multiple data types, suitable for caching and real-time data processing; 2) SQL database manages data through a table structure, supports complex queries and transaction processing, and is suitable for scenarios such as e-commerce and financial systems that require data consistency.

Redis: How It Acts as a Data Store and ServiceRedis: How It Acts as a Data Store and ServiceApr 24, 2025 am 12:08 AM

Redisactsasbothadatastoreandaservice.1)Asadatastore,itusesin-memorystorageforfastoperations,supportingvariousdatastructureslikekey-valuepairsandsortedsets.2)Asaservice,itprovidesfunctionalitieslikepub/submessagingandLuascriptingforcomplexoperationsan

See all articles

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Tools

EditPlus Chinese cracked version

EditPlus Chinese cracked version

Small size, syntax highlighting, does not support code prompt function

PhpStorm Mac version

PhpStorm Mac version

The latest (2018.2.1) professional PHP integrated development tool

SecLists

SecLists

SecLists is the ultimate security tester's companion. It is a collection of various types of lists that are frequently used during security assessments, all in one place. SecLists helps make security testing more efficient and productive by conveniently providing all the lists a security tester might need. List types include usernames, passwords, URLs, fuzzing payloads, sensitive data patterns, web shells, and more. The tester can simply pull this repository onto a new test machine and he will have access to every type of list he needs.

Safe Exam Browser

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.

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment