TIL Ksuid’s - Sun Oct 2220232:27 AM

I learned about ksuid’s at work this week, and how amazingly clever they are. They conveniently provide UUID-like uniqueness but with a timestamp component for stupid simple ordering and cursor-based pagination.

Here’s a simple query that can be used to paginate over a table, via ksuid.

For the first page,

  • $1 = ""

For the Nth page,

  • $1 = last evaluated id from N-1th page

This approach is directly inspired by DynamoDB’s LastEvaluatedKey option on its query command.