Remove all keys from the current database before each spec
Remove all keys from the current database before each spec

josiahcarlson/redis-in-action,michaelBenin/redis-in-action,michaelBenin/redis-in-action,lvbaosong/redis-in-action,lvbaosong/redis-in-action,josiahcarlson/redis-in-action,paulinohuerta/redis-in-action,fengshao0907/redis-in-action,EasonYi/redis-in-action,2hf/redis-in-action,2hf/redis-in-action,paulinohuerta/redis-in-action,lvbaosong/redis-in-action,EasonYi/redis-in-action,2hf/redis-in-action,EasonYi/redis-in-action,michaelBenin/redis-in-action,lym/redis-in-action,lym/redis-in-action,josiahcarlson/redis-in-action,lym/redis-in-action,josiahcarlson/redis-in-action,paulinohuerta/redis-in-action,paulinohuerta/redis-in-action,lym/redis-in-action,josiahcarlson/redis-in-action,2hf/redis-in-action,2hf/redis-in-action,fengshao0907/redis-in-action,josiahcarlson/redis-in-action,lvbaosong/redis-in-action,EasonYi/redis-in-action,fengshao0907/redis-in-action,fengshao0907/redis-in-action,lvbaosong/redis-in-action,EasonYi/redis-in-action,michaelBenin/redis-in-action,paulinohuerta/redis-in-action,fengshao0907/redis-in-action