How to empty a redis database?

Question

You have two options:

• FLUSHDB - clears currently active database
• FLUSHALL - clears all the existing databases

Be careful here.

FlushDB deletes all keys in the current database while FlushALL deletes all keys in all databases on the current host.

tldr: flushdb clears one database and flushall clears all databases

Clear CURRENT

Delete default or currently selected database (usually `0) with

redis-cli flushdb

Clear SPECIFIC

Delete specific redis database with (e.g. 8 as my target database):

redis-cli -n 8 flushdb 

Clear ALL

Delete all redis databases with

redis-cli flushall

With redis-cli:

FLUSHDB       - Removes data from your connection's CURRENT database.
FLUSHALL      - Removes data from ALL databases.

Redis Docs: FLUSHDB, FLUSHALL

There are right answers but I just want to add one more option (requires downtime):

1. Stop Redis.
2. Delete RDB file (find location in redis.conf).
3. Start Redis.