---
title: Patch Smart Tiered Cache setting
---
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[API Reference](https://developers.cloudflare.com/api)
[Cache](https://developers.cloudflare.com/api/resources/cache)
[Smart Tiered Cache](https://developers.cloudflare.com/api/resources/cache/subresources/smart_tiered_cache)
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# Patch Smart Tiered Cache setting
PATCH/zones/{zone\_id}/cache/tiered\_cache\_smart\_topology\_enable
Smart Tiered Cache dynamically selects the single closest upper tier for each of your website’s origins with no configuration required, using our in-house performance and routing data. Cloudflare collects latency data for each request to an origin, and uses the latency data to determine how well any upper-tier data center is connected with an origin. As a result, Cloudflare can select the data center with the lowest latency to be the upper-tier for an origin.
##### Security
API Token
The preferred authorization scheme for interacting with the Cloudflare API. Create a token.
**Example:**Authorization: Bearer Sn3lZJTBX6kkg7OdcBUAxOO963GEIyGQqnFTOFYY
API Email + API Key
The previous authorization scheme for interacting with the Cloudflare API, used in conjunction with a Global API key.
**Example:**X-Auth-Email: user@example.com
The previous authorization scheme for interacting with the Cloudflare API. When possible, use API tokens instead of Global API keys.
**Example:**X-Auth-Key: 144c9defac04969c7bfad8efaa8ea194
##### Accepted Permissions (at least one required)
`Zone Settings Write``Zone Write`
##### P ath ParametersExpand Collapse
zone\_id: string
Identifier.
maxLength32
[Link to this property](<#(resource)%20cache.smart_tiered_cache%20%3E%20(method)%20edit%20%3E%20(params)%20default%20%3E%20(param)%20zone_id%20%3E%20(schema)>)
##### Body ParametersJSONExpand Collapse
value: "on"or "off"
Enable or disable the Smart Tiered Cache.
One of the following:
"on"
Link to this property
"off"
Link to this property
[Link to this property](<#(resource)%20cache.smart_tiered_cache%20%3E%20(method)%20edit%20%3E%20(params)%200%20%3E%20(param)%20value%20%3E%20(schema)>)
##### ReturnsExpand Collapse
errors: array of ResponseInfo { code, message, documentation\_url, source }
code: number
minimum1000
Link to this property
message: string
Link to this property
documentation\_url: optional string
Link to this property
source: optional object {pointer }
pointer: optional string
Link to this property
Link to this property
[Link to this property](<#(resource)%20cache.smart_tiered_cache%20%3E%20(method)%20edit%20%3E%20(network%20schema)%20%3E%20(property)%20errors>)
messages: array of ResponseInfo { code, message, documentation\_url, source }
code: number
minimum1000
Link to this property
message: string
Link to this property
documentation\_url: optional string
Link to this property
source: optional object {pointer }
pointer: optional string
Link to this property
Link to this property
[Link to this property](<#(resource)%20cache.smart_tiered_cache%20%3E%20(method)%20edit%20%3E%20(network%20schema)%20%3E%20(property)%20messages>)
success: true
Whether the API call was successful.
[Link to this property](<#(resource)%20cache.smart_tiered_cache%20%3E%20(method)%20edit%20%3E%20(network%20schema)%20%3E%20(property)%20success>)
result: optional object {id, editable, value, modified\_on }
id: "tiered\_cache\_smart\_topology\_enable"
The identifier of the caching setting.
Link to this property
editable: boolean
Whether the setting is editable.
Link to this property
value: "on"or "off"
Value of the Smart Tiered Cache zone setting.
One of the following:
"on"
Link to this property
"off"
Link to this property
Link to this property
modified\_on: optional string
Last time this setting was modified.
formatdate-time
Link to this property
[Link to this property](<#(resource)%20cache.smart_tiered_cache%20%3E%20(method)%20edit%20%3E%20(network%20schema)%20%3E%20(property)%20result>)
### Patch Smart Tiered Cache setting
HTTP
HTTPTypeScriptPythonGoTerraform
```
curl https://api.cloudflare.com/client/v4/zones/$ZONE_ID/cache/tiered_cache_smart_topology_enable \
-X PATCH \
-H 'Content-Type: application/json' \
-H "Authorization: Bearer $CLOUDFLARE_API_TOKEN" \
-d '{
"value": "on"
}'
```
200 example
```
{
"errors": [
{
"code": 1000,
"message": "message",
"documentation_url": "documentation_url",
"source": {
"pointer": "pointer"
}
}
],
"messages": [
{
"code": 1000,
"message": "message",
"documentation_url": "documentation_url",
"source": {
"pointer": "pointer"
}
}
],
"success": true,
"result": {
"id": "tiered_cache_smart_topology_enable",
"editable": true,
"value": "on",
"modified_on": "2014-01-01T05:20:00.12345Z"
}
}
```
##### Returns Examples
200 example
```
{
"errors": [
{
"code": 1000,
"message": "message",
"documentation_url": "documentation_url",
"source": {
"pointer": "pointer"
}
}
],
"messages": [
{
"code": 1000,
"message": "message",
"documentation_url": "documentation_url",
"source": {
"pointer": "pointer"
}
}
],
"success": true,
"result": {
"id": "tiered_cache_smart_topology_enable",
"editable": true,
"value": "on",
"modified_on": "2014-01-01T05:20:00.12345Z"
}
}
```