本节介绍分布式缓存Redis产品订购、扩缩容、增减分片数、增减副本数、变配以及对应询价接口API参数，包括版本类型、实例类型、版本号、主机类型、分片规格、分片数、规格、副本数、磁盘类型等。

具体参数范围可能因为不同资源池配置上线的产品有所差异，可通过 资源池可创建规格  接口查询，具体可参照下表  API参数对照表。

资源池、可用区、虚拟私有云ID、所在子网ID、安全组ID、实例名称、实例密码参数为产品订购必填参数，本节不作详细说明。

基础版API参数
 

增强版API参数

API参数对照表

请求参数示例

创建一个按需计费的Redis 基础标准版实例，内核版本号是5.0，缓存容量是4GB。

POST https://dcs2-global.ctapi.ctyun.cn/v2/lifeCycleServant/createInstance

{
    "chargeType":"PostPaid",
    "version": "BASIC",
    "edition":"StandardDual",
    "shardMemSize": 4,
    "copiesCount": 2,
    "memUnit": "G",
    "engineVersion":"5.0",
    "zoneName":"cn-xinan1-1A",
    "secondaryZoneName":"cn-xinan1-2A",
    "instanceName":"DCS2-StandardDual-APITest-1",
    "password":"********",
    "vpcId":"vpc-uf9gof2qa0",
    "subnetId":"subnet-6do1ll389s",
    "secgroups":"sg-j9ryoyupxr",
    "cacheServerPort": 6379
}

创建一个包周期计费1个月的Redis 基础Cluster集群版单副本3分片实例，内核版本号是6.0，缓存容量是6GB。

POST https://dcs2-global.ctapi.ctyun.cn/v2/lifeCycleServant/createInstance

{
    "chargeType":"PrePaid",
    "period": 1,
    "autoPay": true,
    "version": "BASIC",
    "edition":"DirectCluster",
    "shardMemSize": 2,
    "shardCount": 3,
    "copiesCount": 1,
    "memUnit": "G",
    "engineVersion":"6.0",
    "zoneName":"cn-xinan1-1A",
    "instanceName":"DCS2-DirectCluster-APITest-2",
    "password":"********",
    "vpcId":"vpc-uf9gof2qa0",
    "subnetId":"subnet-6do1ll389s",
    "secgroups":"sg-j9ryoyupxr",
    "cacheServerPort": 6379
}

创建一个包周期计费2个月，到期自动续订3个月的Redis 增强Proxy集群版3副本3分片实例，内核版本号是6.0，缓存容量是24GB。

POST https://dcs2-global.ctapi.ctyun.cn/v2/lifeCycleServant/createInstance

{
    "chargeType":"PrePaid",
    "period": 2,
    "autoRenew": true,
    "autoRenewPeriod": 3,
    "autoPay": true,
    "version": "PLUS",
    "edition":"ClusterOriginalProxy",
    "shardMemSize": 8,
    "shardCount": 3,
    "copiesCount": 3,
    "memUnit": "G",
    "engineVersion":"6.0",
    "zoneName":"cn-xinan1-1A",
    "secondaryZoneName":"cn-xinan1-2A",
    "instanceName":"DCS2-ClusterOriginalProxy-APITest-3",
    "password":"********",
    "vpcId":"vpc-uf9gof2qa0",
    "subnetId":"subnet-6do1ll389s",
    "secgroups":"sg-j9ryoyupxr",
    "cacheServerPort": 6379
}

创建一个按需计费的Redis 基础读写分离3副本实例，内核版本号是7.0，缓存容量是8GB。

POST https://dcs2-global.ctapi.ctyun.cn/v2/lifeCycleServant/createInstance

{
    "chargeType":"PostPaid",
    "version": "BASIC",
    "edition":"OriginalMultipleReadLvs",
    "shardMemSize": 8,
    "copiesCount": 3,
    "memUnit": "G",
    "engineVersion":"7.0",
    "zoneName":"cn-xinan1-1A",
    "secondaryZoneName":"cn-xinan1-2A",
    "instanceName":"DCS2-OriginalMultipleReadLvs-APITest-4",
    "password":"********",
    "vpcId":"vpc-uf9gof2qa0",
    "subnetId":"subnet-6do1ll389s",
    "secgroups":"sg-j9ryoyupxr",
    "cacheServerPort": 6379
}