Page Size
Controls the maximum number of hits returned for a query.
The main concern is on large installations, that a single user query is limited on the resources it uses. This is a requirement to run on Confluence Data Center.
The default value is 100 hits per page. Administrators may use this configuration to adjust this value according to the resources provided to their Confluence installation.
In case the service provides paging, all results can be retrieved page-by-page.
The Web API supports paging. Macros do not. If a macro is limited by the page size, then either a warning or error message (depends on the macro in use) is rendered.