The server has redis installed. For security, set the password to access redis-server.

1. Open the redis configuration file
vi` `/usr/local/redis/etc/redis``.conf
Add the requirepass password
Will bind 127.0.0.1::1 before #Remove
Save and exit
2. Close redis
/usr/local/redis/bin/redis-cli` `shutdown
Start redis
/usr/local/redis/bin/redis-server` `/usr/local/redis/etc/redis``.conf
3. Check
/usr/local/redis/bin/redis-cli

The password has been set successfully. A password is required to enter. Enter the password


/usr/local/redis/bin/redis-cli` `-a 密码 ``shutdown
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Redis is an open source memory data structure storage used as a database, cache and message broker, suitable for scenarios where fast response and high concurrency are required. 1.Redis uses memory to store data and provides microsecond read and write speed. 2. It supports a variety of data structures, such as strings, lists, collections, etc. 3. Redis realizes data persistence through RDB and AOF mechanisms. 4. Use single-threaded model and multiplexing technology to handle requests efficiently. 5. Performance optimization strategies include LRU algorithm and cluster mode.

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

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

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 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.

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.


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