This article details Cisco Webex's migration from a complex Pinot‑Trino OLAP stack to StarRocks, covering the challenges of the legacy system, the step‑by‑step migration process—including storage, compute, and SQL dialect transformation—and the resulting performance gains, cost reductions, and operational improvements.
This article explores Uber’s sophisticated real‑time data infrastructure, detailing how the company leverages open‑source technologies such as Apache Kafka, Flink, Pinot, and Presto, and describing the architectural components, scaling challenges, multi‑region resilience, data back‑filling, and operational practices that enable low‑latency analytics for millions of daily rides and deliveries.
This article describes how LinkedIn’s Who Viewed Your Profile feature was originally built on a Lambda architecture, the operational challenges it caused, and the step‑by‑step migration to a streamlined, Samza‑driven, Lambda‑less design that improves performance, reduces maintenance overhead, and retains essential batch capabilities.
