【Redis】flushall命令——清空所有缓存数据
如何清空 Redis 集群的所有缓存数据？即删除所有数据库的所有 key。
使用 Redis 的 flushall 命令。
该命令适用 Redis 版本：≥ 1.0.0
执行结果总是返回：OK。
NOTE：生产环境谨慎操作！！！除非你很清楚自己正在做什么！
具体步骤如下：
在终端命令行窗口，输入连接 Redis 指令：
1
redis-cli -h 192.168.182.227 -p 1379
参数说明：
-h：Redis Host（连接地址，如果连接地址为 127.0.0.1，可忽略该参数）；-p：Redis Port（端口号，如果端口号为 6379，可忽略该参数）；-a：Redis 连接密码（如有密码的话，需要上该参数，如 -a 1234567890k）
连接成功后，输入
flushall指令即可清空 Redis 所有缓存数据：1
flushall
示例：
1 | $ redis-cli -h 192.168.182.227 -p 1379 |
（END）
All articles on this blog are licensed under CC BY-NC-SA 4.0 unless otherwise stated.
Related Articles
2019-09-03
Redis根据通配符批量删除Key
Redis 目前还不支持根据通配符批量删除 Key 的命令，但我们可以借助 Redis 的 del 命令、Linux 管道和 xargs 指令来完成。 Redis的 del 命令支持删除给定的一个或多个 key，并返回被删除 key 的数量。如命令 del key1 key2 key3。 比如要删除所有以 WxMpSessionKey 开头的 Key，可以使用如下命令： 12[redis@iztz9ploifbvce ~]# redis-cli -h 192.168.182.227 -p 1379 keys "WxMpSessionKey*" |xargs redis-cli -h 192.168.182.227 -p 1379 del(integer) 2674 如果连接 Redis 的 HOST 为 127.0.0.1，端口号也为默认的 6379，则以上的命令可以简写为： 1redis-cli keys "WxMpSessionKey*" |xargs redis-cli del （END）
2019-12-19
Spring Boot 2.x 集成Redis示例
一、如何集成首先，在 pom 文件新增 redis 依赖： 1234<dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-data-redis</artifactId></dependency> 接着修改项目配置文件 application.properties，增加 redis 配置 1234# redis hostspring.redis.host=172.24.58.226# redis portspring.redis.port=6379 经过上面简单的两步，即可在项目中使用 StringRedisTemplate 和 RedisTemplate<Object,Object>，因为从 Spring Boot 2.0 开始，Spring...
2024-06-02
Using the PFADD Command in Redis
Redis, an open-source, in-memory data structure store, offers a wide range of commands to manipulate data structures like strings, lists, sets, hashes, bitmaps, hyperloglogs, and more. Among these, the HyperLogLog data type is particularly useful for approximating the number of unique elements in a set when the set is too large to fit into memory or when you don’t need absolute accuracy. The PFADD command is one of the key operations for working with HyperLogLog in Redis. This guide will...
2024-07-25
How to learn Redis effectively?
Redis, an open-source, high-performance in-memory data structure store, is renowned for its speed, versatility, and simplicity. It has gained immense popularity and is widely utilized for caching, distributed locks, session management, real-time analytics, and more. Whether you’re a developer looking to expand your skills or an IT professional aiming to optimize data handling, mastering Redis can significantly enhance your proficiency. Here’s a comprehensive guide on how to learn Redis...
2024-07-27
Flushing Cache Data in Redis: A Step-by-Step Guide
Caching mechanisms are vital for optimizing application performance by storing frequently accessed data in-memory. Redis, as a robust key-value store, offers powerful caching capabilities. Occasionally, you might need to clear or flush all cached data from Redis to ensure consistency or during maintenance tasks. Here’s how you can do it effectively: Understanding Redis FlushingFlushing in Redis refers to the action of removing all data stored in the current database. This operation is...
2024-07-30
Effective Ways to Delete Fuzzy Matching Keys in Redis
In Redis, managing keys efficiently is crucial for optimal performance. Sometimes, you might need to delete keys that match a pattern or have a fuzzy match. Here’s how you can achieve this: Using Redis CLI CommandsRedis CLI provides several commands to interact with keys. To delete keys that match a pattern, you can use the KEYS command in combination with the DEL command: 1redis-cli KEYS "pattern*" | xargs redis-cli DEL Replace "pattern*" with your specific pattern. This...