SETBIT

The SETBIT command sets or clears the bit at offset in the string value stored at key.

Syntax

SETBIT key offset value

Parameters

• key - The key name
• offset - The bit offset (0-based). The offset must be a non-negative integer.
• value - The bit value, must be 0 or 1

Return

Integer reply: the original bit value stored at offset.

Examples

redis> SETBIT mykey 0 1
(integer) 0
redis> SETBIT mykey 1 1
(integer) 0
redis> GETBIT mykey 0
(integer) 1
redis> GETBIT mykey 1
(integer) 1

Notes

• The string is automatically extended if the offset is beyond the current string length.
• The string is padded with zero bytes to fill the gap if necessary.
• Bit offsets are numbered from 0, starting from the most significant bit of the first byte.