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# Redis Decrby Command [!(#) Redis Strings](#) The Redis Decrby command decrements the value stored at key by the specified decrement. If the key does not exist, it is initialized to 0 before performing the DECRBY operation. If the value contains the wrong type or the string value cannot be represented as a number, an error is returned. The value is limited to 64-bit signed integer representation. ### Syntax The basic syntax of Redis Decrby command is: redis 127.0.0.1:6379> DECRBY KEY_NAME DECREMENT_AMOUNT ### Available Version >= 1.0.0 ### Return Value The value of key after the decrement. ### Examples # DECRBY on an existing key redis> SET count 100 OK redis> DECRBY count 20(integer) 80# DECRBY on a non-existent key redis> EXISTS pages (integer) 0 redis> DECRBY pages 10(integer) -10 [!(#) Redis Strings](#)