dbclient-engine-kv

name	dbclient-engine-kv
description	KV / coordination engines in DBClient: Redis, RedisCluster, Redis Sentinel, Camellia-Proxy, Etcd, and Zookeeper. Use this skill when adding, debugging, or modifying such a Tester.

DBClient Engine: KV / Coordination

Covered Testers and Aliases

Engine	Tester	Aliases
Redis	RedisTester.java	redis, sentinelredis, camellia-proxy, camellia-redis-proxy
Redis Cluster	RedisClusterTester.java	redis-cluster
Etcd	EtcdTester.java	etcd
Zookeeper	ZookeeperTester.java	zk, zookeeper

Key Dependencies (build.gradle)

implementation 'redis.clients:jedis:3.7.0'  # also used by RedisClusterTester
implementation 'org.apache.zookeeper:zookeeper:3.6.3'
// Etcd is currently commented out
// implementation 'com.coreos:jetcd-core:0.0.1'

Redis-Specific Parameters

Parameter	Description
-M / --master	Sentinel master name
-S / --sentinelPassword	Sentinel password
-k / --key	Key to operate on
-C / --cluster	Cluster-related configuration

Redis Query Syntax Convention

RedisTester.execute() currently splits the command string by whitespace and supports:

• GET <key>
• SET <key> <value>
• DEL <key>
• KEYS <pattern>

Example:

java -jar build/libs/oneclient-1.0-all.jar \
  -h 127.0.0.1 -P 6379 -t query -e redis -q "GET mykey"

Key Concerns

• RedisTester uses JedisPool with a default setMaxTotal(800).
• redis-cluster has its own RedisClusterTester; connection logic differs from standalone/Sentinel.
• The Etcd dependency is currently commented out; enable it and implement the Tester before use.

Maintenance Notes

• When adding a Redis command or protocol alias, sync TesterFactory.java and the DBConfig.java whitelist.
• When changing the Redis command set in RedisTester, sync this skill.