Facing issue with Lookup Cache miss

[sawantprajact]

Hi Greetings,

I'm trying to implement caching with apigee provided policies (populate and lookup cache) and stucked with one peculiar issue with lookup-cache.

Say for example, my first api request is working as expected but from the second/third api-request I start to getting this `cache-hit: false` issue. But, if I resend/refresh the UI, it gets me the expected data from cache.

Here is my populate-cache policy in 'getUserInfo' proxy attached to ProxyEndpoint:

<populatecache async="false" continueonerror="false" enabled="true" name="PC-StoreUserInfo">
	<displayname>PC-StoreUserInfo</displayname>
	<properties></properties>
	<cachekey>
		<prefix>user_info</prefix>
		<keyfragment ref="app_enduser"></keyfragment>
	</cachekey>
	<scope>Exclusive</scope>
	<expirysettings>
		<timeoutinseconds>3600</timeoutinseconds>
	</expirysettings>
	<source>response.content</Source>
</populatecache>

and here is my Lookup cache policy from 'sampleSharedFlow' Sharedflow:

<lookupcache async="false" continueonerror="false" enabled="true" name="LC-GetUserInfoFromCache">
	<displayname>LC-GetUserInfoFromCache</displayname>
	<properties></properties>
	<cachekey>
		<prefix>user_info</prefix>
		<keyfragment ref="app_enduser"></keyfragment>
	</cachekey>
	<scope>Exclusive</scope>
	<assignto>userDetail</assignto>
</lookupcache>

(sorry can't share the trace session):

type	LookupCacheExecution
enforcement	request
stepDefinition-continueOnError	false
stepDefinition-displayName	LC-GetUserInfoFromCache
stepDefinition-name	LC-GetUserInfoFromCache
stepDefinition-enabled	true
result	true
lookupcache.LC-GetUserInfoFromCache.failed	false
lookupcache.LC-GetUserInfoFromCache.fault.name
lookupcache.LC-GetUserInfoFromCache.assignto	userDetail
lookupcache.LC-GetUserInfoFromCache.isEncrypted	false
lookupcache.LC-GetUserInfoFromCache.cachekey	user_info__ttyu@yopmail.com
lookupcache.LC-GetUserInfoFromCache.cachename	example__dev
lookupcache.LC-GetUserInfoFromCache.cachehit	false
lookupcache.LC-GetUserInfoFromCache.fault.cause

What might be the possible cause of this cachehit false? where on reload/resend of the same request it gets the desired data from cache.

Thanks