DeepNoMind

May 31, 2026 · Databases

Inside PayPal’s JunoDB: A High‑Performance Distributed KV Store

The article examines PayPal’s open‑source JunoDB, a high‑performance distributed key‑value store built in Go, detailing its motivation, three‑tier proxy architecture, sharding strategy, quorum‑based consistency, aggressive replication, security mechanisms, real‑world PayPal use cases, and the path to open‑source release.