Inspect and clear Redis safely

Databases

Inspect Redis keys and clear targeted cache data.

1
Connect
```
redis-cli -h <host> -p <port>
```
2
Check key count
```
DBSIZE
```
3
Scan keys
```
SCAN 0 MATCH <prefix>* COUNT 100
```
4
Delete key
```
DEL <key>
```
5
Flush DB (destructive)
```
FLUSHDB
```

Common mistakes

Using FLUSHALL/FLUSHDB in production without explicit approval.

Related commands: redis-cli, SCAN, DEL