General uptime monitoring + catching intermittent TLS failures on specific AWS API Gateway nodes.
- General monitoring: Start with Checkly Free (6 locations, 1-2 min checks) + Sentry uptime ($1/monitor/month) if you're already on Sentry. Or self-host Uptime Kuma for free on a $5/mo VPS. UptimeRobot Free (50 monitors, 5-min checks) is another solid zero-cost option if you just need simple HTTP pings.
- Catching today's issue: Checkly Team ($64/mo) — 30s checks across 24 locations with TLS error detail. Better Stack, Sentry, Uptime Kuma, and UptimeRobot all fall short here — single-location or multi-failure requirements mean a bad node in a round-robin pool likely goes undetected.