$ shards install
$ shards update
$ crystal build razor.cr --release --no-debug
SADD node1.route.example.app.io:A 1.1.1.1 2.2.2.2 3.3.3.3
SADD node1.route.example.app.io:AAAA 2001::1 2001::2 2001::3
HMSET node1.route.example.app.io ANSWER consistent_hash
SADD node1.route.example.app.io:A 1.1.1.1 2.2.2.2 3.3.3.3
SADD node1.route.example.app.io:AAAA 2001::1 2001::2 2001::3
HMSET node1.route.example.app.io ANSWER group_consistent_hash
SADD node1.route.example.app.io:GROUPS GROUP1 GROUP2
SADD GROUP1:A 192.168.1.1 192.168.1.2
SADD GROUP2:A 192.168.2.1 192.168.2.2
SADD GROUP1:AAAA 2001::1 2001::2
SADD GROUP2:AAAA 2002::1 2002::2
# dnsperf -d data -n 10000
DNS Performance Testing Tool
Nominum Version 2.0.0.0
Statistics:
Queries sent: 40000
Queries completed: 40000 (100.00%)
Queries lost: 0 (0.00%)
Response codes: NOERROR 40000 (100.00%)
Average packet size: request 27, response 49
Run time (s): 0.551791
Queries per second: 72491.214971
Average Latency (s): 0.001175 (min 0.000487, max 0.011503)
Latency StdDev (s): 0.000560