Request for Jira to use a centralized node for search Indexes, as in ElasticSearch.
Similar to what is available for Bitbucket Data Center:

https://confluence.atlassian.com/bitbucketserver075/use-an-elasticsearch-cluster-with-bitbucket-data-center-1018785752.html

https://confluence.atlassian.com/bitbucketserver/how-to-install-and-configure-a-remote-elasticsearch-instance-815577748.html