Your customers already told you what to fix. Bellwether ships it, then checks it worked.

Affected

12 accounts, $184k ARR

Success metric

export_success_rate 62% → 95%

Guardrails

p95 API latency, error rate

Rollout

flag export_streaming, 1% → 100%

• sentryTypeError in /export, 212 events in 7 days
• zendesk“Export is greyed out for our big tables”
• gong“We’d pay for a bigger plan if exports worked”
• posthog31.4% of export_clicked never reach export_done

- const rows = await db.select(query)
- return toCSV(rows)
+ for await (const page of db.pages(query, 1000)) {
+   stream.write(toCSV(page))
+ }