Ritesh maps replication gains

- Engineer Ritesh Roushan outlined a primary–replica database replication pattern that can scale read workloads and reduce latency in high‑read systems. - He reported production wins like roughly 6x latency improvement for read paths, at the cost of replication lag and added complexity to reconcile state. - He also shared a 2026 system‑design roadmap emphasizing foundations, scaling and production mastery for engineers building reliable services. (x.com) (x.com)