https://appcoding.com/tags/incremental-computation/ Recent content in Incremental Computation on App Coding Hugo en-us Mon, 05 Oct 2026 00:00:00 +0000 https://appcoding.com/incremental-view-maintenance-small-enough-to-embed-turns-dashboard-queries-into-lookups/ Mon, 05 Oct 2026 00:00:00 +0000 https://appcoding.com/incremental-view-maintenance-small-enough-to-embed-turns-dashboard-queries-into-lookups/ <p>A dashboard tile shows today&rsquo;s US traffic, so every page load runs <code>SELECT count(*) FROM events WHERE country = 'US'</code> over a table that grew by a few hundred thousand rows since yesterday. SQLite answers correctly. It also walks every matching index entry to do it, because its b-trees don&rsquo;t keep counts, and it does the same walk for the next viewer and the one after. Between two page loads the answer moves by a handful of rows, yet each load pays for all of them.</p>