🔗 Scotty, I need warp speed in three minutes

In the quest for performance in a Postgres connection pooler written in Elixir, the article outlines critical insights gained by the author during their work on a project named Ultravisor. The author emphasizes the significance of profiling tools like eFlambè and Erlang’s tprof for identifying performance bottlenecks, particularly in high-throughput environments where functions need to execute hundreds of thousands of times per second. Key lessons include the importance of minimizing work done (like using debouncing techniques) and the surprising costs associated with Telemetry in tight loops. The article also discusses the advantages of using records over maps for structured data to achieve better performance. Ultimately, these insights are practical reminders for developers aiming to optimize Elixir applications, particularly those dealing with high traffic and heavy data loads.