Healthchecks.io is an online service for monitoring regularly running tasks such as cron jobs. It uses the Dead man's switch technique: the monitored system must "check in" with Healthchecks.io at regular, configurable time intervals. When Healthchecks.io detects a missed check-in, it sends out alerts.
Healthchecks.io is a product of SIA Monkey See Monkey Do, currently a one-man software and consulting company. The one man is Pēteris Caune, a long time Python developer from Valmiera, Latvia. Mastodon, Github.
Healthchecks.io is an open-source project. The code is on GitHub. It has BSD license and is accepting contributions.
Healthchecks.io donates 5% of its monthly recurring revenue to open-source projects it relies on directly and indirectly. We use Github Sponsors for the majority of the donations.
Here are a few metrics about the service (updated manually, last updated: February 2, 2024).
|years in business
|open source & non-profit accounts
|USD monthly recurring revenue
|checks (services monitored)
|36 200 000
|pings processed per day
|notifications sent per day
The service currently runs on Hetzner bare metal servers, with healthy excess capacity to handle traffic spikes. The app servers are load-balanced. The PostgreSQL database has a hot standby as well as full daily backups to S3. The database fail-over process is manual, and the ops team consists of a single person, so multi-hour or even multi-day outages are possible!
As a business, Healthchecks.io is profitable and sustainable.
While we can only guarantee the best effort availability, in practice, the availability has exceeded 99.9% since the service publicly launched in July 2015.
Mailing address:SIA Monkey See Monkey Do