How MoEngage Achieved Millisecond Personalization with ScyllaDB

This story was originally published on HackerNoon at: https://hackernoon.com/how-moengage-achieved-millisecond-personalization-with-scylladb. MoEngage built a ScyllaDB-powered Eventstore handling 250K writes per second, 200TB+ of data, and millisecond queries for real-time personalization. Check more stories related to tech-stories at: https://hackernoon.com/c/tech-stories. You can also check exclusive content about #real-time-event-processing, #moengage-eventstore, #customer-engagement-platform, #real-time-user-segmentation, #multi-tenant-architecture, #low-latency-event-storage, #large-scale-customer-data, #good-company, and more. This story was written by: @scylladb. Learn more about this writer by checking @scylladb's about page, and for more stories, please visit hackernoon.com. MoEngage rebuilt its real-time data infrastructure to support instant personalization, segmentation, and customer engagement. Its ScyllaDB-powered Eventstore processes more than 250,000 writes per second with 1ms average latency while managing over 200TB of data. The architecture enables real-time triggers, live activity feeds, and low-latency user timelines, replacing limitations of batch analytics and search-based systems.