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, itout 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. Twitter, Github.

Healthchecks.io is an open-source project. The code is on GitHub. It has BSD license and is accepting contributions.

Here are a few metrics about the service (updated manually, last updated: May 2, 2022).

|6||years in business|

|19 500||free accounts|

|41||open source & non-profit accounts|

|445||paying accounts|

|8 600||USD monthly recurring revenue|

|99 400||checks (services monitored)|

|25 600 000||pings processed per day|

|22 200||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!

In case of incidents, we post status updates to our status page, status.healthchecks.io, and our Twitter account, @healthchecks_io.

While we can only guarantee the *best effort* availability,

in practice, the availability has exceeded 99.9% since the service

launched in July 2015.

Email: [email protected]

Twitter: @healthchecks_io

Mailing address:SIA Monkey See Monkey Do