InMobi: Powering Supply Path Optimization with Aerospike
summary
InMobi describes an online user profile store built on Aerospike that serves as a feature store, ad cache, and real‑time budget calculator, handling 2–3 million QPS with sub-10 ms P99 latency. The system stores about 10 billion keys across ~50 nodes and 30 TB, uses UDFs to push computation into the database, and applies inline signals for targeting, bidding, traffic shaping and cost reduction. The stack is operational at scale and meeting latency targets.
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