Insights on scheduling, productivity, and building scheduling software
Explore product updates, scheduling strategies, and engineering deep dives from the team building Cal.com, the scheduling infrastructure for booking and automation.
- Engineering, Sep 9, 2026
Scheduling is NP-Hard. We need responses in milliseconds.
- Engineering, Jun 26, 2026
When a Dependency Melts Down: Our June 22–23 Incident Post-Mortem
- Engineering, May 11, 2026
How do we keep up with PR reviews in the age of AI?
- Engineering, Apr 15, 2026
Moving to closed-source: the technical changes
- Engineering, Apr 13, 2026
AI Is Finding Critical Vulnerabilities Faster Than Teams Can Fix Them
- Engineering, Jan 29, 2026
Incident review: database load, cascading failures, and what we learned - January 27, 2026
- Engineering, Jan 1, 2026
How We Cut Our CI Wall Time from 30 Minutes to 5 Minutes
- Engineering, Nov 18, 2025
Incident review: Bookings page update - November 14, 2025
- Engineering, Oct 14, 2025
Engineering in 2026 and beyond
- Engineering, Jul 12, 2025
Finding and fixing O(n²) performance bottlenecks: Lessons from Cal.com's algorithm optimizations
- Engineering, Jan 21, 2025
Cal.com v4.9.4
- Engineering, Jan 21, 2025
Cal.com v4.9.2
- Engineering, Jan 20, 2025
Cal.com v4.9.3
- Engineering, Jul 12, 2024
Why you should not build your own scheduling
- Engineering, Oct 6, 2023
The Intricacies and Challenges of Implementing a CalDAV Supporting System for Cal.com
- Engineering, May 15, 2023
Cal.com Cold Start Resolution
