Vercel's Black Friday-Cyber Monday 2024 recap

This post details Vercel's performance and operational metrics during Black Friday-Cyber Monday 2024, highlighting the handling of 86.7 billion requests and 1.9 million peak requests per second. It emphasizes the platform's ability to scale functions (28.9 billion invocations), mitigate DDoS attacks (1.75 million requests/sec), and maintain 99.9992% uptime. Specific features like function failover regions, auto-scaling concurrency, routing middleware, and ISR are cited as key enablers for handling traffic spikes, personalization, and ensuring speed. The post also quantifies security measures, including 6.3 billion+ Firewall actions and 519 million custom WAF blocks. It notes an 80% growth in peak requests per second compared to the previous year.