使用如下命令获取大key
/usr/local/services/redis/bin/redis-cli -h 192.168.1.136 -a 123456 -p 7001 --bigkeys
-------- summary -------
Sampled 5123146 keys in the keyspace!
Total key length in bytes is 207210827 (avg len 40.45)
Biggest string found 'hxl-activity:admin:orders_dataD1CL1540721976058' has 6294556 bytes
Biggest list found 'bbsboast:core:content:hxl-1-2022-08-31' has 292 items
Biggest set found 'hxl:num:20220830' has 5450 members
Biggest hash found 'hxl-api-core:hxl-remind-core:JINAN_CHILD' has 249284 fields
Biggest zset found 'hxl:core:CHILD:hxl_22763' has 16692 members
5072477 strings with 2830008288 bytes (99.01% of keys, avg size 557.91)
97 lists with 1852 items (00.00% of keys, avg size 19.09)
8 sets with 10399 members (00.00% of keys, avg size 1299.88)
26658 hashs with 330125 fields (00.52% of keys, avg size 12.38)
23906 zsets with 2570629 members (00.47% of keys, avg size 107.53)
0 streams with 0 entries (00.00% of keys, avg size 0.00)
使用memory usage key,查看具体某个key占用内存大小
memory usage hxl-activity:admin:orders_dataD1CL1540721976058
memory usage key就可以用来查看某个key对应value占用内存的大小，单位是bytes.