module Redis::Cluster::KeySlotConverter

def convert(key)

Returns:
  • (Integer) - slot number

Parameters:
  • key (String) -- the key of the redis command 
def convert(key)
  crc = 0
  key.each_byte do |b|
    crc = ((crc << 8) & 0xffff) ^ XMODEM_CRC16_LOOKUP[((crc >> 8) ^ b) & 0xff]
  end
  crc % HASH_SLOTS
end