⚡ perf: optimize push scheduler cron to run queries in parallel#15
⚡ perf: optimize push scheduler cron to run queries in parallel#15marcin2121 wants to merge 1 commit into
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Resolves N+1 query issue in the push scheduler cron by using `Promise.all` to fetch subscriptions and send web pushes concurrently. Replaces sequential `.update().eq()` calls with a single bulk `.in()` status update. Co-authored-by: google-labs-jules[bot] <161369871+google-labs-jules[bot]@users.noreply.github.com>
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💡 What: The push scheduler cron logic in
app/api/cron/push-scheduler/route.tswas optimized to execute database queries and push notification tasks in parallel, and bulk update history rows.🎯 Why: Previously, the cron iterated sequentially over each scheduled push, creating an N+1 query bottleneck as it fetched subscriptions, sent pushes, and updated the status row-by-row.
📊 Measured Improvement: In a local benchmark simulation of 10 pushes (
test_perf.js), the parallel execution reduced total time from ~1007 ms to ~101 ms, achieving a ~10x performance improvement for 10 scheduled pushes.Additionally, added a protective check before calling the
.in('id', pushIds)bulk update to avoid a400 Bad Requestif the array happens to be empty.PR created automatically by Jules for task 10424595588112908456 started by @marcin2121