Programming: Databases
From wikinotes
Mobile Offline Mode w/ Replication
dzone offline mode https://dzone.com/articles/how-to-make-mobile-app-work-offline offline mode indexeddb https://yalantis.com/blog/offline-mode-application/
- use soft-deletes, and use columns: updated_at, created_at, deleted_at
- nothing is deleted, the latest decision per row wins
Efficient Pagination
See https://www.slideshare.net/MarkusWinand/p2d2-pagination-done-the-postgresql-way
- OFFSET is expensive
- instead use WHERE, and limit results to those you haven't seen yet
JOIN Algorithms
Algorithms: Nested Loop Join Algorithms: Block Nested Loop Join Algorithms: Hash Join Algorithms: Merge Join
