How cachedb encode redis Key and Value?

[Bino Oetomo]

I'm trying to setup unbound with cachedb and use redis as it's backend

here is my unbound config:
```
server:
    module-config: "cachedb validator iterator"
    pidfile: "/run/unbound/unbound.pid"
    verbosity: 4
    log-queries: yes
    logfile: "/var/log/unbound.log"

cachedb:
    backend: redis
    secret-seed: "mysecretseed2025"
    redis-server-host: 127.0.0.1
    redis-server-port: 6379
    redis-logical-db: 0

```


when i try to do "dig" :
```
dig @127.0.0.1 www.vw.com
```

here what I got from redis-cli monitor:
```
1757153895.538580 [0 127.0.0.1:45384] "GET"
"C17FB95ECEC29435E6559BBB5EAB981D6FDC38E0AA338F30C7E8EB5D0652346B"
1757153897.048882 [0 127.0.0.1:45384] "SET"
"C17FB95ECEC29435E6559BBB5EAB981D6FDC38E0AA338F30C7E8EB5D0652346B"
"\x00\x00\x81\x80\x00\x01\x00\x05\x00\x00\x00\x01\x03www\x02vw\x03com\x00\x00\x01\x00\x01\xc0\x0c\x00\x05\x00\x01\x00\x00\x0e\x0f\x00!\blive-usa\x04vwng\x0elighthouselabs\x02eu\x00\xc0(\x00\x05\x00\x01\x00\x00\a\a\x00\x16\x06vw-goa\tedgesuite\x03net\x00\xc0U\x00\x05\x00\x01\x00\x00T_\x00\x13\x04a995\x04dscr\x06akamai\xc0f\xc0w\x00\x01\x00\x01\x00\x00\x00\x14\x00\x04\xd2\xd2\x91\x93\xc0w\x00\x01\x00\x01\x00\x00\x00\x14\x00\x04\xd2\xd2\x91\x98\x00\x00)\x04\xd0\x00\x00\x80\x00\x00\x00\x00\x00\x00\x00h\xbc\ni\x00\x00\x00\x00h\xbc\n}"

```

my question is: How unbound cachedb module "encode" that two field (key,
value)?

regards
-wowon-
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