How Nava helped ELO cut infrastructure costs by 87% by migrating from Elasticsearch to ClickHouse

Nava leveraged ClickHouse to significantly enhance ELO's real-time payments monitoring platform, transitioning from Elasticsearch to reduce storage from 12 TB to 2 TB and cut infrastructure costs by 87% to R$120,000 annually. This migration resulted in 5x faster data aggregations and improved dashboard refresh rates to every five seconds. Founded in 1995, Nava initially focused on data center infrastructure but pivoted to financial services in 2012, partnering with Itaú to develop real-time business monitoring solutions. ClickHouse's adoption, driven by data engineer Lucas Souza, was based on its superior performance, efficient storage compression, and user-friendly SQL support, which replaced the cumbersome EQL syntax. The successful deployment at ELO, processing 22 million transactions daily, highlighted the advantages of ClickHouse, leading to broader adoption across Brazil's financial sector, with Nava now exploring ClickHouse Cloud for its clients. This transition has positioned ClickHouse as Nava's preferred solution for managing high-volume analytical workloads, offering improved performance and cost savings, and reinforcing ELO's role as a prominent advocate for the platform.