-h <hostname> Server hostname (default: 127.0.0.1). -p <port> Server port (default: 6379). -s <socket> Server socket (overrides hostname and port). -a <password> Password to use when connecting to the server. -u <uri> Server URI. -r <repeat> Execute specified command N times. -i <interval> When -r is used, waits <interval> seconds per command. It is possible to specify sub-second times like -i 0.1. -n <db> Database number. -x Read last argument from STDIN. -d <delimiter> Multi-bulk delimiter in for raw formatting (default: \n). -c Enable cluster mode (follow -ASK and -MOVED redirections). --raw Use raw formatting for replies (default when STDOUT is not a tty). --no-raw Force formatted output even when STDOUT is not a tty. --csv Output in CSV format. --stat Print rolling stats about server: mem, clients, ... --latency Enter a special mode continuously sampling latency. If you use this mode in an interactive session it runs forever displaying real-time stats. Otherwise if --raw or --csv is specified, or if you redirect the output to a non TTY, it samples the latency for 1 second (you can use -i to change the interval), then produces a single output and exits. --latency-history Like --latency but tracking latency changes over time. Default time interval is 15 sec. Change it using -i. --latency-dist Shows latency as a spectrum, requires xterm 256 colors. Default time interval is 1 sec. Change it using -i. --lru-test <keys> Simulate a cache workload with an 80-20 distribution. --replica Simulate a replica showing commands received from the master. --rdb <filename> Transfer an RDB dump from remote server to local file. --pipe Transfer raw Redis protocol from stdin to server. --pipe-timeout <n> In --pipe mode, abort with error if after sending all data. no reply is received within <n> seconds. Default timeout: 30. Use 0 to wait forever. --bigkeys Sample Redis keys looking for big keys. --hotkeys Sample Redis keys looking for hot keys. only works when maxmemory-policy is *lfu. --scan List all keys using the SCAN command. --pattern <pat> Useful with --scan to specify a SCAN pattern. --intrinsic-latency <sec> Run a test to measure intrinsic system latency. The test will run for the specified amount of seconds. --eval <file> Send an EVAL command using the Lua script at <file>. --ldb Used with --eval enable the Redis Lua debugger. --ldb-sync-mode Like --ldb but uses the synchronous Lua debugger, in this mode the server is blocked and script changes are not rolled back from the server memory. --cluster <command> [args...] [opts...] Cluster Manager command and arguments (see below). --verbose Verbose mode. --no-auth-warning Don't show warning message when using password on command line interface.
* 注意有的参数是1条杠“-”，有的是2条杠“--”，初学时容易输错杠以为输错参数
其中，--stat参数常用于性能调优，以下是其返回结果的属性说明：
keys key的数量 mem 键值对的总内存量 clients 当前连接的总clients数量 blocked 当前阻塞的客户端数量 requests 服务器请求总次数 (+1) 截止上次请求增加次数 connections 服务器连接次数
参考资料：