One Runtime, Two Programs That Have Nothing in Common

A C++20 actor framework where a REST API and a market-data pipeline run on the same execution rules. Here are two functions from the same codebase. The first is an HTTP handler. Reads a cache, falls back to Postgres, refreshes the cache, writes JSON: qb :: io :: async :: task < void > TaskManager :: handle_list_tasks ( ctx_t ctx ) { auto cached = co_await _redis . get ( "tasks:list" ); if (…