Redis Sysadmin Tasks
Check Memory usage#
127.0.0.1:6379> info memory
# Memory
used_memory:1030528
used_memory_human:1006.38K
used_memory_rss:1241088
used_memory_rss_human:1.18M
used_memory_peak:1031952
used_memory_peak_human:1007.77K
used_memory_peak_perc:99.86%
used_memory_overhead:1029976
used_memory_startup:963376
used_memory_dataset:552
used_memory_dataset_perc:0.82%
total_system_memory:8589934592
total_system_memory_human:8.00G
used_memory_lua:37888
used_memory_lua_human:37.00K
maxmemory:0
maxmemory_human:0B
maxmemory_policy:noeviction
mem_fragmentation_ratio:1.20
mem_allocator:libc
active_defrag_running:0
lazyfree_pending_objects:0
Memory stats#
127.0.0.1:6379> memory stats
1) "peak.allocated"
2) (integer) 1031952
3) "total.allocated"
4) (integer) 1030496
5) "startup.allocated"
6) (integer) 963376
7) "replication.backlog"
8) (integer) 0
9) "clients.slaves"
10) (integer) 0
11) "clients.normal"
12) (integer) 66488
13) "aof.buffer"
14) (integer) 0
15) "db.0"
16) 1) "overhead.hashtable.main"
2) (integer) 112
3) "overhead.hashtable.expires"
4) (integer) 0
17) "overhead.total"
18) (integer) 1029976
19) "keys.count"
20) (integer) 2
21) "keys.bytes-per-key"
22) (integer) 33560
23) "dataset.bytes"
24) (integer) 520
25) "dataset.percentage"
26) "0.77473181486129761"
27) "peak.percentage"
28) "99.858909606933594"
29) "fragmentation"
30) "1.1207501888275146"
Keyspace Info#
127.0.0.1:6379> info keyspace
# Keyspace
db0:keys=2,expires=0,avg_ttl=0
List all keys#
127.0.0.1:6379> KEYS *
1) "Bahamas"
2) "Croatia"
Check size a specific key takes up#
127.0.0.1:6379> MEMORY USAGE Bahamas
(integer) 57
Result is in bytes
Redis benchmark#
redis-benchmark