Caching, Auctions & Budget Control: Revenue Optimization at Scale
Building the data layer that enables 1M+ QPS with sub-10ms reads through L1/L2 cache hierarchy achieving 85% hit rate. Deep dive into eCPM-based auction mechanisms for fair price comparison across CPM/CPC/CPA models, and distributed budget pacing using Redis atomic counters with proven ≤1% overspend guarantee.