Redis key basic commands

Redis key basic commands (the most commonly used: String type as an example)

The command does not need to be memorized. The tab key will prompt the command format. If it is not the command you want, continue to press it.

• set mykey myvalue(add/change)
• del mykey(delete)
• get mykey(check)
• keys *(Check all keys and values, Redis receives commands in a single thread, so if the amount of data is large, Redis will be blocked from receiving subsequent commands)
• key my*(fuzzy search key)
• dbsize(check how many keys the database has)
• exists mykey1 (check if a key exists, 1 means it exists, 0 means it doesn't exist)
• del mykey1 mykey2 (supports multiple deletions, returns the number of deletions, 0, 1, 2...)
• type mykey(check the type of key)
• object encoding mykey (check the internal data type of a key in redis, String and List are the external data types of Redis)

Redis data types

Common data types

• String
• Hash
• Set
• List
• Zset

Infrequently used

• Hyperloglog
• Geospatial
• Streams