On serverJira Server, the search queries are executed in the same Java Virtual Machine (JVM) as Jira. On a cloud hosting, the JQL Search Extensions service is a separate deployment that communicates with Jira over the REST API. As a result, all operations in cloud Jira Cloud are indexed asynchronously and any changes in Jira are reflected in the JQL with a slight delay.
Keep in mind that filters are indexed periodically. https://jqlsearchextensions.atlassian. net/wiki/spaces/SEARCH/pages/2080210945/Extended+search+filters#Limitations See Extended Search Filters to learn more about filter limitations.
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