How to Survive Traffic Spikes: Infrastructure Lessons from Sales, Viral Posts, and AI Trends

In modern internet services, the most successful moments can also be the most dangerous for your infrastructure. A successful marketing campaign, a viral social media post, or a major sale can increase traffic several times within hours. According to the Russian Association of Internet Commerce Companies (AKIT), during large sales events traffic for online stores can grow by 120–200% compared to normal levels. For developers and infrastructure teams, this means one thing: traffic spikes are no longer rare events. They are a normal part of operating modern online services. And if your architecture isn’t ready for them, success can quickly turn into downtime. ⸻ When growth becomes a stress test Every successful marketing event effectively becomes a stress test for your system. This happens across many industries. One online education platform experienced a sudden surge in users after collaborating with a popular blogger. Registrations increased almost fourfold within a few hours, and the