填充
eval "for i=0,(1024*1024*20) do redis.call('set','testdata:'..i,'1234567890') end" 0used_memory_human:1.81G
清洁
eval "for i=0,(1024*1024*20) do redis.call('del','testdata:'..i) end" 0used_memory_human:574.41K

eval "for i=0,(1024*1024*20) do redis.call('set','testdata:'..i,'1234567890') end" 0used_memory_human:1.81G
eval "for i=0,(1024*1024*20) do redis.call('del','testdata:'..i) end" 0used_memory_human:574.41K