Integrating Kyoto Tycoon With PostgreSQL

What this post added

This post details the technical challenge of propagating configuration rules across Cloudflare's global network of Points of Presence (PoPs) in near real-time. It introduces the use of PostgreSQL for storing these rules and Kyoto Tycoon (a distributed key-value store) for replication. The core contribution is the implementation of a writable Foreign Data Wrapper (FDW) for PostgreSQL 9.3, allowing direct integration and transactional operations with Kyoto Tycoon, thereby simplifying and accelerating the rule synchronization process.