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Reliability

Measuring the Pager That Can't Go Down

An on-call tool that's down during your incident is the worst kind of irony. Here's what we measure, and why we page ourselves before you notice.

August 6, 2026 5 min read

Coming soon.

This post will cover how gravityloop measures its own page-delivery latency end to end across SMS, voice, and Slack, why we treat our own paging path as the thing most likely to embarrass us, and what “we page ourselves before you notice” actually looks like in practice.

Ship it. We've got the pager.

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