Queries the parameters and default values of ApsaraDB for Redis instances with a specified architecture and major version.
After you call this operation to query the parameters and default values, you can also call the ModifyInstanceConfig operation to modify the parameters of an ApsaraDB for Redis instance.
Debugging
Request parameters
| Parameter | Type | Required | Example | Description |
|---|---|---|---|---|
| Action | String | Yes | DescribeParameterTemplates |
The operation that you want to perform. Set the value to DescribeParameterTemplates. |
| CharacterType | String | Yes | logic |
The architecture of the instance. For more information, see Architectures. Valid values:
|
| Engine | String | Yes | Redis |
The database type of the instance. Set the value to Redis. |
| EngineVersion | String | Yes | 5.0 |
The major version of the instance. Valid values: 2.8, 4.0, and 5.0. |
| RegionId | String | No | cn-hangzhou |
The ID of the region where the instance is deployed. You can call the DescribeRegions operation to query IDs of available regions. |
Response parameters
| Parameter | Type | Example | Description |
|---|---|---|---|
| Engine | String | redis |
The database type of the instance. Set the value to Redis. |
| EngineVersion | String | 5.0 |
The major version of the ApsaraDB for Redis instance. |
| ParameterCount | String | 24 |
The number of parameters. |
| Parameters | Array of TemplateRecord |
The details of the parameters. |
|
| TemplateRecord | |||
| CheckingCode | String | [yes|no] |
The valid values of the parameter. |
| ForceModify | Boolean | true |
Indicates whether the parameter can be modified. Valid values:
|
| ForceRestart | Boolean | false |
Indicates whether a restart is required after the parameter is modified. Valid values:
|
| ParameterDescription | String | Enable append-only file (AOF) persistence. |
The description of the parameter. |
| ParameterName | String | appendonly |
The name of the parameter. For more information about parameters and configurations, see Parameter overview and configuration guide. |
| ParameterValue | String | yes |
The default value of the parameter. |
| RequestId | String | 9DA28D8E-514D-4F12-ADED-70A9C818**** |
The ID of the request. |
Examples
Sample requests
https://r-kvstore.aliyuncs.com/?Action=DescribeParameterTemplates
&CharacterType=logic
&Engine=Redis
&EngineVersion=5.0
&<Common request parameters>Sample success responses
XML format
<DescribeParameterTemplatesResponse>
<ParameterCount>24</ParameterCount>
<EngineVersion>5.0</EngineVersion>
<Parameters>
<TemplateRecord>
<ForceModify>1</ForceModify>
<CheckingCode>[yes|no]</CheckingCode>
<ParameterValue>no</ParameterValue>
<ForceRestart>false</ForceRestart>
<ParameterName>#no_loose_check-whitelist-always</ParameterName>
<ParameterDescription>check whitelist always</ParameterDescription>
</TemplateRecord>
<TemplateRecord>
<ForceModify>1</ForceModify>
<CheckingCode>. *</CheckingCode>
<ParameterValue></ParameterValue>
<ForceRestart>false</ForceRestart>
<ParameterName>#no_loose_disabled-commands</ParameterName>
<ParameterDescription>You can disable some dangerous commands, for example "keys,flushdb,flushall", the commands must be in [flushall,flushdb,keys,hgetall,eval,evalsha,script]. </ParameterDescription>
</TemplateRecord>
<TemplateRecord>
<ForceModify>1</ForceModify>
<CheckingCode>[yes|no]</CheckingCode>
<ParameterValue>no</ParameterValue>
<ForceRestart>false</ForceRestart>
<ParameterName>#no_loose_sentinel-enabled</ParameterName>
<ParameterDescription>Be compatible with sentinel mode. </ParameterDescription>
</TemplateRecord>
<TemplateRecord>
<ForceModify>1</ForceModify>
<CheckingCode>[yes|no]</CheckingCode>
<ParameterValue>yes</ParameterValue>
<ForceRestart>false</ForceRestart>
<ParameterName>appendonly</ParameterName>
<ParameterDescription>Enable AOF persistence.</ParameterDescription>
</TemplateRecord>
<TemplateRecord>
<ForceModify>1</ForceModify>
<CheckingCode>\d+\s+\d+\s+\d+</CheckingCode>
<ParameterValue>33554432 8388608 60</ParameterValue>
<ForceRestart>false</ForceRestart>
<ParameterName>client-output-buffer-limit pubsub</ParameterName>
<ParameterDescription>The output buffer limits of publisher and subscriber clients.</ParameterDescription>
</TemplateRecord>
<TemplateRecord>
<ForceModify>1</ForceModify>
<CheckingCode>[yes|no]</CheckingCode>
<ParameterValue>yes</ParameterValue>
<ForceRestart>false</ForceRestart>
<ParameterName>dynamic-hz</ParameterName>
<ParameterDescription>Whether to enable a dynamic hz value.</ParameterDescription>
</TemplateRecord>
<TemplateRecord>
<ForceModify>1</ForceModify>
<CheckingCode>[0-999999999999999]</CheckingCode>
<ParameterValue>512</ParameterValue>
<ForceRestart>false</ForceRestart>
<ParameterName>hash-max-ziplist-entries</ParameterName>
<ParameterDescription>If hash fields are less than this value and hash value sizes are less than hash-max-ziplist-value, the ziplist will be used. </ParameterDescription>
</TemplateRecord>
<TemplateRecord>
<ForceModify>1</ForceModify>
<CheckingCode>[0-999999999999999]</CheckingCode>
<ParameterValue>64</ParameterValue>
<ForceRestart>false</ForceRestart>
<ParameterName>hash-max-ziplist-value</ParameterName>
<ParameterDescription>If hash value sizes are than less this value and hash fields are less than hash-max-ziplist-entries, the ziplist will be used. </ParameterDescription>
</TemplateRecord>
<TemplateRecord>
<ForceModify>1</ForceModify>
<CheckingCode>[1-500]</CheckingCode>
<ParameterValue>10</ParameterValue>
<ForceRestart>false</ForceRestart>
<ParameterName>hz</ParameterName>
<ParameterDescription>The frequency at which Redis background tasks are performed, for example, tasks to evict expired keys. Valid values: 1 to 500. The default value is 10, which specifies that each task is performed 10 times per second. A higher value results in higher CPU consumption but allows the system to delete expired keys and terminate time-out connections more frequently. We recommend that you specify a value less than or equal to 100.</ParameterDescription>
</TemplateRecord>
<TemplateRecord>
<ForceModify>1</ForceModify>
<CheckingCode>[yes|no]</CheckingCode>
<ParameterValue>no</ParameterValue>
<ForceRestart>false</ForceRestart>
<ParameterName>lazyfree-lazy-eviction</ParameterName>
<ParameterDescription>lazyfree switch on eviction. </ParameterDescription>
</TemplateRecord>
<TemplateRecord>
<ForceModify>1</ForceModify>
<CheckingCode>[yes|no]</CheckingCode>
<ParameterValue>yes</ParameterValue>
<ForceRestart>false</ForceRestart>
<ParameterName>lazyfree-lazy-expire</ParameterName>
<ParameterDescription>lazyfree switch on expire. </ParameterDescription>
</TemplateRecord>
<TemplateRecord>
<ForceModify>1</ForceModify>
<CheckingCode>[yes|no]</CheckingCode>
<ParameterValue>yes</ParameterValue>
<ForceRestart>false</ForceRestart>
<ParameterName>lazyfree-lazy-server-del</ParameterName>
<ParameterDescription>lazyfree switch on server implicit deletion. </ParameterDescription>
</TemplateRecord>
<TemplateRecord>
<ForceModify>1</ForceModify>
<CheckingCode>[0-65535]</CheckingCode>
<ParameterValue>0</ParameterValue>
<ForceRestart>false</ForceRestart>
<ParameterName>list-compress-depth</ParameterName>
<ParameterDescription>The number of entries on the list that are not compressed at both ends. </ParameterDescription>
</TemplateRecord>
<TemplateRecord>
<ForceModify>1</ForceModify>
<CheckingCode>[-5-99999999]</CheckingCode>
<ParameterValue>-2</ParameterValue>
<ForceRestart>false</ForceRestart>
<ParameterName>list-max-ziplist-size</ParameterName>
<ParameterDescription>Threadhold of ziplist size on quicklist. </ParameterDescription>
</TemplateRecord>
<TemplateRecord>
<ForceModify>1</ForceModify>
<CheckingCode>[volatile-lru|allkeys-lru|volatile-random|allkeys-random|volatile-ttl|volatile-lfu|allkeys-lfu|noeviction]</CheckingCode>
<ParameterValue>volatile-lru</ParameterValue>
<ForceRestart>false</ForceRestart>
<ParameterName>maxmemory-policy</ParameterName>
<ParameterDescription>To config how Redis will select what to remove when maxmemory is reached. There are eight behaviors that can be chose : volatile-lru,allkeys-lru,volatile-lfu,allkeys-lfu,volatile-random,allkeys-random,volatile-ttl,noeviction</ParameterDescription>
</TemplateRecord>
<TemplateRecord>
<ForceModify>1</ForceModify>
<CheckingCode>. *</CheckingCode>
<ParameterValue></ParameterValue>
<ForceRestart>false</ForceRestart>
<ParameterName>notify-keyspace-events</ParameterName>
<ParameterDescription>keyspace-event notification feature. </ParameterDescription>
</TemplateRecord>
<TemplateRecord>
<ForceModify>1</ForceModify>
<CheckingCode>[0-999999999999999]</CheckingCode>
<ParameterValue>512</ParameterValue>
<ForceRestart>false</ForceRestart>
<ParameterName>set-max-intset-entries</ParameterName>
<ParameterDescription>Sets have a special encoding in just one case: when a set is composed of just strings that happen to be integers in radix 10 in the range of 64 bit signed integers. The following configuration setting sets the limit in the size of the set in order to use this special memory saving encoding. </ParameterDescription>
</TemplateRecord>
<TemplateRecord>
<ForceModify>1</ForceModify>
<CheckingCode>[10000-10000000]</CheckingCode>
<ParameterValue>20000</ParameterValue>
<ForceRestart>false</ForceRestart>
<ParameterName>slowlog-log-slower-than</ParameterName>
<ParameterDescription>The time is expressed in microseconds, so 1000000 is equivalent to one second. The default setting for this is 20000 (20ms) and the lower bound of this setting is 10000 (10ms). </ParameterDescription>
</TemplateRecord>
<TemplateRecord>
<ForceModify>1</ForceModify>
<CheckingCode>[100-10000]</CheckingCode>
<ParameterValue>1024</ParameterValue>
<ForceRestart>false</ForceRestart>
<ParameterName>slowlog-max-len</ParameterName>
<ParameterDescription>The max slowlog count. </ParameterDescription>
</TemplateRecord>
<TemplateRecord>
<ForceModify>1</ForceModify>
<CheckingCode>[0-999999999999999]</CheckingCode>
<ParameterValue>4096</ParameterValue>
<ForceRestart>false</ForceRestart>
<ParameterName>stream-node-max-bytes</ParameterName>
<ParameterDescription>The maximum amount of memory in bytes that each macro node in a stream can consume. Valid values: 0 to 999999999999999. Default value: 4096. Unit: bytes. A value of 0 specifies that the amount of consumed memory is not limited.</ParameterDescription>
</TemplateRecord>
<TemplateRecord>
<ForceModify>1</ForceModify>
<CheckingCode>[0-999999999999999]</CheckingCode>
<ParameterValue>100</ParameterValue>
<ForceRestart>false</ForceRestart>
<ParameterName>stream-node-max-entries</ParameterName>
<ParameterDescription>The maximum number of entries stored on each macro node in a stream. Valid values: 0 to 999999999999999. Default value: 100. A value of 0 specifies that the number of entries on each node is not limited.</ParameterDescription>
</TemplateRecord>
<TemplateRecord>
<ForceModify>1</ForceModify>
<CheckingCode>[0-100000]</CheckingCode>
<ParameterValue>0</ParameterValue>
<ForceRestart>false</ForceRestart>
<ParameterName>timeout</ParameterName>
<ParameterDescription>Close the connection after a client is idle for N seconds (0 to disable)</ParameterDescription>
</TemplateRecord>
<TemplateRecord>
<ForceModify>1</ForceModify>
<CheckingCode>[0-999999999999999]</CheckingCode>
<ParameterValue>128</ParameterValue>
<ForceRestart>false</ForceRestart>
<ParameterName>zset-max-ziplist-entries</ParameterName>
<ParameterDescription>Similarly to hashes and lists, sorted sets are also specially encoded in order to save a lot of space. </ParameterDescription>
</TemplateRecord>
<TemplateRecord>
<ForceModify>1</ForceModify>
<CheckingCode>[0-999999999999999]</CheckingCode>
<ParameterValue>64</ParameterValue>
<ForceRestart>false</ForceRestart>
<ParameterName>zset-max-ziplist-value</ParameterName>
<ParameterDescription>Similarly to hashes and lists, sorted sets are also specially encoded in order to save a lot of space. </ParameterDescription>
</TemplateRecord>
</Parameters>
<RequestId>9DA28D8E-514D-4F12-ADED-70A9C818F0A0</RequestId>
<Engine>redis</Engine>
</DescribeParameterTemplatesResponse>JSON format
{
"ParameterCount": "24",
"EngineVersion": "5.0",
"Parameters": {
"TemplateRecord": [
{
"ForceModify": 1,
"CheckingCode": "[yes|no]",
"ParameterValue": "no",
"ForceRestart": false,
"ParameterName": "#no_loose_check-whitelist-always",
"ParameterDescription": "check whitelist always"
},
{
"ForceModify": 1,
"CheckingCode": ". *",
"ParameterValue": "",
"ForceRestart": false,
"ParameterName": "#no_loose_disabled-commands",
"ParameterDescription": "You can disable some dangerous commands, for example \"keys,flushdb,flushall\", the commands must be in [flushall,flushdb,keys,hgetall,eval,evalsha,script]."
},
{
"ForceModify": 1,
"CheckingCode": "[yes|no]",
"ParameterValue": "no",
"ForceRestart": false,
"ParameterName": "#no_loose_sentinel-enabled",
"ParameterDescription": "Be compatible with sentinel mode."
},
{
"ForceModify": 1,
"CheckingCode": "[yes|no]",
"ParameterValue": "yes",
"ForceRestart": false,
"ParameterName": "appendonly",
"ParameterDescription": "Enable AOF persistence."
},
{
"ForceModify": 1,
"CheckingCode": "\\d+\\s+\\d+\\s+\\d+",
"ParameterValue": "33554432 8388608 60",
"ForceRestart": false,
"ParameterName": "client-output-buffer-limit pubsub",
"ParameterDescription": "The output buffer limits of publisher and subscriber clients."
},
{
"ForceModify": 1,
"CheckingCode": "[yes|no]",
"ParameterValue": "yes",
"ForceRestart": false,
"ParameterName": "dynamic-hz",
"ParameterDescription": "Whether to enable a dynamic hz value."
},
{
"ForceModify": 1,
"CheckingCode": "[0-999999999999999]",
"ParameterValue": "512",
"ForceRestart": false,
"ParameterName": "hash-max-ziplist-entries",
"ParameterDescription": "If hash fields are less than this value and hash value sizes are less than hash-max-ziplist-value, the ziplist will be used."
},
{
"ForceModify": 1,
"CheckingCode": "[0-999999999999999]",
"ParameterValue": "64",
"ForceRestart": false,
"ParameterName": "hash-max-ziplist-value",
"ParameterDescription": "If hash value sizes are than less this value and hash fields are less than hash-max-ziplist-entries, the ziplist will be used."
},
{
"ForceModify": 1,
"CheckingCode": "[1-500]",
"ParameterValue": "10",
"ForceRestart": false,
"ParameterName": "hz",
"ParameterDescription": "The frequency at which Redis background tasks are performed, for example, tasks to evict expired keys. Valid values: 1 to 500. The default value is 10, which specifies that each task is performed 10 times per second. A higher value results in higher CPU consumption but allows the system to delete expired keys and terminate time-out connections more frequently. We recommend that you specify a value less than or equal to 100."
},
{
"ForceModify": 1,
"CheckingCode": "[yes|no]",
"ParameterValue": "no",
"ForceRestart": false,
"ParameterName": "lazyfree-lazy-eviction",
"ParameterDescription": "lazyfree switch on eviction."
},
{
"ForceModify": 1,
"CheckingCode": "[yes|no]",
"ParameterValue": "yes",
"ForceRestart": false,
"ParameterName": "lazyfree-lazy-expire",
"ParameterDescription": "lazyfree switch on expire."
},
{
"ForceModify": 1,
"CheckingCode": "[yes|no]",
"ParameterValue": "yes",
"ForceRestart": false,
"ParameterName": "lazyfree-lazy-server-del",
"ParameterDescription": "lazyfree switch on server implicit deletion."
},
{
"ForceModify": 1,
"CheckingCode": "[0-65535]",
"ParameterValue": "0",
"ForceRestart": false,
"ParameterName": "list-compress-depth",
"ParameterDescription": "The number of entries on the list that are not compressed at both ends."
},
{
"ForceModify": 1,
"CheckingCode": "[-5-99999999]",
"ParameterValue": "-2",
"ForceRestart": false,
"ParameterName": "list-max-ziplist-size",
"ParameterDescription": "Threadhold of ziplist size on quicklist."
},
{
"ForceModify": 1,
"CheckingCode": "[volatile-lru|allkeys-lru|volatile-random|allkeys-random|volatile-ttl|volatile-lfu|allkeys-lfu|noeviction]",
"ParameterValue": "volatile-lru",
"ForceRestart": false,
"ParameterName": "maxmemory-policy",
"ParameterDescription": "To config how Redis will select what to remove when maxmemory is reached. There are eight behaviors that can be chose : volatile-lru,allkeys-lru,volatile-lfu,allkeys-lfu,volatile-random,allkeys-random,volatile-ttl,noeviction"
},
{
"ForceModify": 1,
"CheckingCode": ". *",
"ParameterValue": "",
"ForceRestart": false,
"ParameterName": "notify-keyspace-events",
"ParameterDescription": "keyspace-event notification feature."
},
{
"ForceModify": 1,
"CheckingCode": "[0-999999999999999]",
"ParameterValue": "512",
"ForceRestart": false,
"ParameterName": "set-max-intset-entries",
"ParameterDescription": "Sets have a special encoding in just one case: when a set is composed of just strings that happen to be integers in radix 10 in the range of 64 bit signed integers. The following configuration setting sets the limit in the size of the set in order to use this special memory saving encoding."
},
{
"ForceModify": 1,
"CheckingCode": "[10000-10000000]",
"ParameterValue": "20000",
"ForceRestart": false,
"ParameterName": "slowlog-log-slower-than",
"ParameterDescription": "The time is expressed in microseconds, so 1000000 is equivalent to one second. The default setting for this is 20000 (20ms) and the lower bound of this setting is 10000 (10ms). "
},
{
"ForceModify": 1,
"CheckingCode": "[100-10000]",
"ParameterValue": "1024",
"ForceRestart": false,
"ParameterName": "slowlog-max-len",
"ParameterDescription": "The max slowlog count."
},
{
"ForceModify": 1,
"CheckingCode": "[0-999999999999999]",
"ParameterValue": "4096",
"ForceRestart": false,
"ParameterName": "stream-node-max-bytes",
"ParameterDescription": "The maximum amount of memory in bytes that each macro node in a stream can consume. Valid values: 0 to 999999999999999. Default value: 4096. Unit: bytes. A value of 0 specifies that the amount of consumed memory is not limited."
},
{
"ForceModify": 1,
"CheckingCode": "[0-999999999999999]",
"ParameterValue": "100",
"ForceRestart": false,
"ParameterName": "stream-node-max-entries",
"ParameterDescription": "The maximum number of entries stored on each macro node in a stream. Valid values: 0 to 999999999999999. Default value: 100. A value of 0 specifies that the number of entries on each node is not limited."
},
{
"ForceModify": 1,
"CheckingCode": "[0-100000]",
"ParameterValue": "0",
"ForceRestart": false,
"ParameterName": "timeout",
"ParameterDescription": "Close the connection after a client is idle for N seconds (0 to disable)"
},
{
"ForceModify": 1,
"CheckingCode": "[0-999999999999999]",
"ParameterValue": "128",
"ForceRestart": false,
"ParameterName": "zset-max-ziplist-entries",
"ParameterDescription": "Similarly to hashes and lists, sorted sets are also specially encoded in order to save a lot of space."
},
{
"ForceModify": 1,
"CheckingCode": "[0-999999999999999]",
"ParameterValue": "64",
"ForceRestart": false,
"ParameterName": "zset-max-ziplist-value",
"ParameterDescription": "Similarly to hashes and lists, sorted sets are also specially encoded in order to save a lot of space."
}
]
},
"RequestId": "9DA28D8E-514D-4F12-ADED-70A9C818F0A0",
"Engine": "redis"
}Error codes
| HttpCode | Error code | Error message | Description |
|---|---|---|---|
| 400 | InvalidParameters.Format | Specified parameters is not valid. | The error message returned because the specified parameters are invalid. |
For a list of error codes, visit the API Error Center.