Slack for JIRA - Caching

What data will be cached

• Channels
• Groups
• Users

How long will it updated ? 

Cache will be expired in 1 hours if no one access them

How can I force clear cache ?

Navigate to setup admin page . eg. : http://localhost:2990/jira/secure/admin/SetupSlack.jspa

Scroll down and click on which cache you want to clear

e.g :

slack.cache.channels.* which is public channels

slack.cache.group.* which is private channels