redis-portRedis 数据同步

redis-port 是一个 Redis 工具，通过解析 rdb 文件，实现 Redis 主节点和从节点的数据同步。

示例：

$ cat dump.rdb | ./redis-port decode 2>/dev/null
  {"db":0,"type":"string","expireat":0,"key":"a","key64":"YQ==","value64":"MTAwMDA="}
  {"db":0,"type":"string","expireat":0,"key":"b","key64":"Yg==","value64":"aGVsbG8ud29ybGQ="}
  {"db":0,"type":"hash","expireat":0,"key":"c","key64":"Yw==","field":"c1","field64":"YzE=","member64":"MTAw"
  {"db":0,"type":"hash","expireat":0,"key":"c","key64":"Yw==","field":"c2","field64":"YzI=","member64":"dGVzdC5zdHJpbmc="}
  {"db":0,"type":"list","expireat":0,"key":"d","key64":"ZA==","index":0,"value64":"bDE="}
  {"db":0,"type":"list","expireat":0,"key":"d","key64":"ZA==","index":1,"value64":"bDI="}
  {"db":0,"type":"zset","expireat":0,"key":"e","key64":"ZQ==","member":"e1","member64":"ZTE=","score":1.000000}
  {"db":0,"type":"zset","expireat":0,"key":"e","key64":"ZQ==","member":"e2","member64":"ZTI=","score":2.000000}
  ... ...