官方文档https://redis.io/docs/latest/develop/programmability/lua-apiEVAL script numkeys key [key …] arg [arg …]scriptlua脚本numkeys涉及多少个key值key [key ...]lua脚本所需访问的keyarg [arg ...]常规输入参数语法local test KEYS[1]用来定义变量if flag 1 thenredis.log(redis.LOG_NOTICE,test)elseredis.log(redis.LOG_NOTICE,test .. !1)end if else 控制语法return flag脚本返回的值函数redis.call()执行redis命令redis.log(level, message)输出日志