In the first 20 seconds after an http_cache_store_{disk,memory} starts, whenever another node shows up, a warm_me_up message is sent to the node that shows up, and the latter sends the n hottest stored HTTP responses.
Result will depend on your deployment type. If you’re doing rolling deployment then nodes still up will feed new nodes with HTTP responses, and the former nodes will benefit from the same mechanism once they are eventually restarted, receiving back the HTTP responses they sent to the first restarted nodes.
