Cloudsmith with Cian Butler
Cloudsmith with Cian Butler  
Podcast: Rust in Production
Published On: Thu Apr 09 2026
Description: Rust adoption can be loud, like when companies such as Microsoft, Meta, and Google announce their use of Rust in high-profile projects. But there are countless smaller teams quietly using Rust to solve real-world problems, sometimes even without noticing. This episode tells one such story. Cian and his team at Cloudsmith have been adopting Rust in their Python monolith not because they wanted to rewrite everything in Rust, but because Rust extensions were simply best-in-class for the specific performance problems they were trying to solve in their Django application. As they had these initial successes, they gained more confidence in Rust and started using it in more and more areas of their codebase.About CloudsmithMade with love in Belfast and trusted around the world. Cloudsmith is the fully-managed solution for controlling, securing, and distributing software artifacts. They analyze every package, container, and ML model in an organization's supply chain, allow blocking bad packages before they reach developers, and build an ironclad chain of custody.About Cian ButlerCian is a Service Reliability Engineer located in Dublin, Ireland. He has been working with Rust for 10 years and has a history of helping companies build reliable and efficient software. He has a BA in Computer Programming from Dublin City University.Links From The EpisodeLee Skillen's blog - The blog of Lee Skillen, Cloudsmith's co-founder and CTODjango - Python on RailsDjango Mixins - Great for scaling up, not great for long-term maintenanceSBOM - Software Bill of MaterialsMicroservice vs Monolith - Martin Fowler's canonical explanationJaeger - "Debugger" for microservicesPyO3 - Rust-to-Python and Python-to-Rust FFI crateorjson - Pretty fast JSON handling in Python using Rustdrf-orjson-renderer - Simple orjson wrapper for Django REST FrameworkRust in Python cryptography - Parsing complex data formats is just safer in Rust!jsonschema-py - jsonschema in Python with Rust, mentioned in the PyO3 docsWSGI - Python's standard for HTTP server interfacesuWSGI - A application server providing a WSGI interfacerustimport - Simply import Rust files as modules in Python, great for prototypinggranian - WSGI application server written in Rust with tokio and hyperhyper - HTTP parsing and serialization library for RustHAProxy - Feature rich reverse proxy with good request queue supportnginx - Very common reverse proxy with very nice and readable configlocust - Fantastic load-test tool with configuration in Pythongoose - Locust, but in RustPodman - Daemonless container engineDocker - Container platformbuildx - Docker CLI plugin for extended build capabilities with BuildKitOrbStack - Faster Docker for Desktop alternativeRust in Production: curl with Daniel Stenberg - Talking about hyper's strictness being at odds with curl's permissive designaxum - Ergonomic and modular web framework for Rustrocket - Web framework for RustOfficial LinksCloudsmith WebsiteCian Butler's WebsiteCian's E-Mail