So Googling this question show a common approach using KEYS command and then pipe them to DEL command, which looks something like this in Lua script. Sometimes you might want to purge a set of similar Redis keys in one shot. May 9, 2019 • permalink • Redis. Available since 1.0.0. There is also a random process that deletes keys and there was a change of behaviour regarding expiration in Redis 2.2, read more on expiration here. linton Hi Shon M , Any idea why i get "ERR wrong number of arguments for 'keys… When debugging code that uses Redis, it's usually really useful to be able to delete keys by pattern, like a bunch of keys that match a common prefix. KEYS 的速度非常快，但在一个大的数据库中使用它仍然可能造成性能问题，如果你需要从一个数据集中查找特定的 key ，你最好还是用 Redis 的集合结构(set)来代替。 I made a Google search and found some methods to do so like, for example, the method in this article. When a key to remove holds a value other than a string, the individual complexity for this key is O(M) where M is the number of elements in the list, set, sorted set or hash. Execute the following command in bash: redis-cli -h [host] -p [port] KEYS "prefix:*" | xargs redis-cli DEL Seems clear? In my case, I do store keys using human-readable dates as part of the key name, which I need to delete by pattern. I'm working on a big project and in some places, I have to delete keys by a pattern, for example, I want to delete all the keys that start with filterProducts. I recently found myself in a situation where I had to delete millions of keys in Redis that all started with the letters soulmate-index:.A few posts online suggested using the KEYS command in combination with the DEL command to delete keys in Redis that match a pattern.However, I was hesitant to run the KEYS command against a high traffic Redis instance. It's also useful to be able to keep only some keys that match a certain pattern, and then delete the rest. Wait a minute! How to delete Redis keys using pattern. However, there is a trick to do this action. Redis: How delete keys matching a pattern? Quickly move and delete Redis keys by pattern 88.34K 6 List all databases in a Redis instance 38.81K 0 Redis & Go: Building a simple swear word filter 35.08K 5 1 Response Add your response. So far, standard Redis "DEL" command does not allow to remove keys using patterns. Time complexity: O(N) where N is the number of keys that will be removed. I'm working on a big project and in some places, I have to delete keys by a pattern, for example, I want to delete all the keys that start with filterProducts. But I don't know what is the efficient one for a big project, could you please help me? In order to delete useless data, we found that there were problems in the process of using redis. I made a Google search and found some methods to do so like, for example, the method in this article. Due to misuse of plug-ins, there are millions of useless keys in the redis instance on a server. GitHub Gist: instantly share code, notes, and snippets. After my research, I finally found the correct usage of redis to delete keys … But I don't know what is the efficient one for a big project, could you please help me?
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