| title | description | services | author | ms.service | ms.topic | ms.date | ms.author |
|---|---|---|---|---|---|---|---|
Azure API Management policy reference - cache-lookup-value | Microsoft Docs |
Reference for the cache-lookup-value policy available for use in Azure API Management. Provides policy usage, settings, and examples. |
api-management |
dlepow |
api-management |
article |
03/18/2024 |
danlep |
[!INCLUDE api-management-availability-all-tiers]
Use the cache-lookup-value policy to perform cache lookup by key and return a cached value. The key can have an arbitrary string value and is typically provided using a policy expression.
Note
This policy must have a corresponding Store value in cache policy.
[!INCLUDE api-management-cache-volatile]
[!INCLUDE api-management-policy-generic-alert]
<cache-lookup-value key="cache key value"
default-value="value to use if cache lookup resulted in a miss"
variable-name="name of a variable looked up value is assigned to"
caching-type="prefer-external | external | internal" />| Attribute | Description | Required | Default |
|---|---|---|---|
| caching-type | Choose between the following values of the attribute: - internal to use the built-in API Management cache,- external to use the external cache as described in Use an external Azure Cache for Redis in Azure API Management,- prefer-external to use external cache if configured or internal cache otherwise.Policy expressions aren't allowed. |
No | prefer-external |
| default-value | A value that will be assigned to the variable if the cache key lookup resulted in a miss. If this attribute is not specified, null is assigned. Policy expressions are allowed. |
No | null |
| key | Cache key value to use in the lookup. Policy expressions are allowed. | Yes | N/A |
| variable-name | Name of the context variable the looked up value will be assigned to, if lookup is successful. If lookup results in a miss, the variable will not be set. Policy expressions aren't allowed. | Yes | N/A |
- Policy sections: inbound, outbound, backend, on-error
- Policy scopes: global, workspace, product, API, operation
- Gateways: classic, v2, consumption, self-hosted
<cache-lookup-value
key="@("userprofile-" + context.Variables["enduserid"])"
variable-name="userprofile" />For more information and examples of this policy, see Custom caching in Azure API Management.
[!INCLUDE api-management-policy-ref-next-steps]