Case Study: AppLovin achieves 15B ad requests/day and millisecond latency with Aerospike

How AppLovin Built the Ultimate Stack

AppLovin is a mobile marketing platform that processes massive ad traffic — roughly 15 billion requests per day at peaks of ~400K transactions/sec across seven data centers — and faced the challenge of scaling to terabytes of daily data while maintaining availability, low latency, fault tolerance and a manageable cost base without simply adding more hardware or staff.

They solved this by building a modular, future‑proof stack composed of carefully evaluated technologies (notably Aerospike for primary storage) chosen for industry adoption, developer momentum, integration fit and failover characteristics. The result is an efficient, highly available infrastructure that serves records in 1–2 ms, supports at‑scale features like retargeting without rebuilding core systems, and can accommodate billions of users while keeping operational overheads under control.

AppLovin

John Krystynak

Founder and Chief Technology Officer