In a number of instances, you might need to delete all keys from your Redis database. For example, during testing, you may want to clear the database to reset the environment. Or you may wish to remove all keys as part of a caching strategy when the data becomes invalid or stale.
Consider you have a connection established with your Redis instance using the redis
gem in Ruby. To delete all keys, you can use the flushdb
method, which removes all keys from the current database:
require 'redis' redis = Redis.new redis.flushdb
This code will empty the current selected database. It's worth noting that flushdb
operates on the currently selected database only.
If you want to delete keys across all databases, use the flushall
method:
require 'redis' redis = Redis.new redis.flushall
This snippet will erase all keys in every database on the Redis server.
flushdb
or flushall
, as these operations are not reversible.flushall
or flushdb
on a production database.flushdb
.flushdb
affect other databases on the server?
No, flushdb
only removes keys from the currently selected database.flushall
or flushdb
?
No, once executed, these operations are irreversible.Dragonfly is fully compatible with the Redis ecosystem and requires no code changes to implement.