`BRPOP`

Blocking right pop across one or more lists (effect logged as RPOP).

语法	`BRPOP key [key ...] timeout`
分组	list
参数个数	-3
起始版本	1.0.0
标志	write, blocking
复杂度	O(1) to serve; FIFO park
Redis 兼容性	differs: same multi-key priority deviation as BLPOP