Using Postgres to Make Languages Interoperable

Exploring the interplay of applications written in different programming languages, the blog post introduces a novel approach to bridging these languages using Postgres as a language-neutral control plane. By leveraging Postgres, workflows, messages, events, and streams can be exchanged between applications without introducing additional infrastructure like message brokers. This is achieved through a shared database schema, enabling seamless interoperability across languages, with workflows stored as entries in tables that applications in different languages can access with simple SQL statements. A critical aspect of this system is the use of a universal JSON-based serialization format for data that needs to be shared across languages, addressing the challenge of serialization compatibility. This format balances the need for interoperability with the flexibility of language-native serialization for intermediate data within workflows. By coordinating workflows through the database itself, this approach eliminates the need for additional orchestration services, thereby simplifying the integration of multi-language systems while maintaining the benefits of durability, transactions, and concurrency control that Postgres offers.

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