Cal.com

See the uptime of Cal.com

Jan 27, 2026

12 days ago

We have reverted a change that was causing extra load from all logged in users of the Cal.com app. The system is stabilizing and we are actively monitoring.

Investigating · January 27 at 4:18 PM (2 hours earlier)

A large spike in our database is causing degraded performance. We are urgently investigating.

Nov 18, 2025

3 months ago

Our upstream provider Cloudflare is experiencing Global Network Issues that are affecting Cal.com

AppWebsiteAPI

Monitoring · November 18 at 12:01 PM

We are actively monitoring https://www.cloudflarestatus.com/incidents/8gmgl950y3h7 for updates.

Aug 20, 2025

6 months ago

We are experiencing a major degradation of service across the app

App

Resolved · August 20 at 5:04 PM (in 18 minutes)

Our downstream provided resolved the issue triggering this. Service has been restored.

Identified · August 20 at 4:54 PM (10 minutes earlier)

One of our downstream providers has informed us they are fixing an issue and it will be addressed within the next few minutes.

Investigating · August 20 at 4:47 PM (8 minutes earlier)

Jun 11, 2025

8 months ago

Some requests to Google Calendar failing

Resolved · June 23 at 3:30 PM (in 12 days)

This has been resolved. Service is back to normal.

Investigating · June 23 at 2:13 PM (1 hour earlier)

We are again seeing some calls to Google Calendar APIs failing which will impact events being created and removed. We are urgently investigating.

Resolved · June 11 at 3:24 PM (12 days earlier)

We have confirmed the fix brings systems back to normal.

Monitoring · June 11 at 2:41 PM (43 minutes earlier)

We identified what was causing requests to Google Calendar to fail and are monitoring to verify systems are back to normal.

Investigating · June 11 at 2:28 PM (14 minutes earlier)

We are seeing a small % of failing requests to modify calendar events on Google Calendar.

Jun 20, 2025

8 months ago

We are experiencing some downtime due to database issues.

Resolved · June 20 at 1:41 PM (in 57 minutes)

Systems are back to normal.

Monitoring · June 20 at 1:14 PM (28 minutes earlier)

We have found the root cause and have a fix in place. We will continue to monitor to ensure all systems are back.

Investigating · June 20 at 12:44 PM (30 minutes earlier)

We large spike in traffic has caused stress on our database. We are investigating urgently.

Apr 23, 2025

10 months ago

Database issues causing 500s

Resolved · April 23 at 4:52 PM (in 4 hours)

We have found and fixed the root cause of these issues.

Identified · April 23 at 12:26 PM (4 hours earlier)

We are seeing 500s happening on both the web app and API due to a database overload issue. We are actively investigating and will provide updates as soon as possible.

Mar 24, 2025

11 months ago

Brief Booking Page downtime (404 Error)

Resolved · March 24 at 2:00 AM

Due to a faulty deployment, for a brief moment at 11pm EST the booking pages returned a 404 error for about 15 minutes. This was quickly resolved.

Feb 18, 2025

1 year ago

DDOS Database error (code 500)

Resolved · February 18 at 3:21 PM

We got hit by an uncaught DDOS which temporarily broke the application and threw a 500 error and experienced a downtime of 2 minutes.

Feb 4, 2025

1 year ago

Emails not being sent.

Resolved · February 4 at 12:50 PM

Emails are currently not being sent due to a false positive restriction in our Twilio Sendgrid account. The restriction is being lifted.

Apr 14, 2024

2 years ago

Planned Maintenance

Identified · April 14 at 5:03 PM

We are currently performing planned maintenance. Cal.com will be back up and running shortly.

Mar 12, 2024

2 years ago

We are currently investigating issues with our database.

Resolved · March 12 at 6:17 PM (in 9 minutes)

Problem has been solved.

Investigating · March 12 at 6:07 PM (9 minutes earlier)

We are currently investigating an issue with our database causing slowness of the system.

Feb 3, 2024

2 years ago

slowness of several endpoints

App

Resolved · February 3 at 9:33 PM (in 43 minutes)

We've successfully managed to fight off this attack and are recovering systems.

Identified · February 3 at 9:05 PM (28 minutes earlier)

We have identified a coordinated DDOS attack and failed SQL injection attempts from German IP addresses

Identified · February 3 at 8:55 PM (10 minutes earlier)

We are not excluding a third-party coordinated attack. Experiencing unusual activity on some serverless actions

Identified · February 3 at 8:50 PM (5 minutes earlier)

We are currently experiencing severe slowness on multiple endpoints