Suggestion for Pagination response next-links

[hw-knowit]

Spring's reference for pagination as linked in our guidelines describes a _links section in the response object. With such a structure we can enable Keyset Pagination (1) (2) for much more efficient pagination queries. I am not sure exactly how this would be set up in Spring, but I presume it can be done. I suggest we add a mention of keyset pagination as a "MAY" (given potentially complex implementation) in the pagination response section.

[hw-knowit]

We have recently had an issue where the counting of total elements for pagination caused excessive database load (the page is limited to 100 per, but there were 100 000+ total elements). Next-links is a possible workaround for such cases.