{"podcast":{"title":"Elixir Wizards","slug":"elixir-wizards","podcast_index_feed_id":674321,"rss_url":"https://feeds.fireside.fm/smartlogic/rss","website_url":"https://smartlogic.fireside.fm","image_url":"https://media24.fireside.fm/file/fireside-images-2024/podcasts/images/0/03a50f66-dc5e-4da4-ab6e-31895b6d4c9e/cover.jpg?v=3","author":"SmartLogic LLC","episode_count":201,"summary":"Elixir Wizards is an interview-style podcast from SmartLogic featuring conversations with developers, engineers, and industry leaders about the Elixir programming language and the broader software development landscape. Each episode explores how modern systems are built, from distributed architectures and infrastructure to developer workflows, security, and emerging technologies like AI. While rooted in the Elixir ecosystem, the show often branches out to compare approaches across languages, platforms, and disciplines. Whether you’re working in Elixir or just interested in how software is evolving, Elixir Wizards offers practical insights and thoughtful perspectives from the people building today’s systems.","last_synced_at":null,"page_url":"https://stenobird.com/podcast/elixir-wizards"},"episode":{"title":"SDUI at Scale: GraphQL & Elixir at Cars.com with Zack Kayser","slug":"sdui-at-scale-graphql-elixir-at-cars-com-with-zack-kayser","published_at":"2025-07-03T10:30:00+00:00","page_url":"https://stenobird.com/podcast/elixir-wizards/sdui-at-scale-graphql-elixir-at-cars-com-with-zack-kayser","show_page_url":"https://stenobird.com/podcast/elixir-wizards","url":"https://smartlogic.fireside.fm/s14-e06-sdui-graphql-elixir","audio_url":"https://aphid.fireside.fm/d/1437767933/03a50f66-dc5e-4da4-ab6e-31895b6d4c9e/a1f823ee-32ed-47d0-8571-bae12c48ac78.mp3","summary":"Zack Kayser, Staff Software Engineer at cars.com, joins Elixir Wizards Sundi Myint and Charles Suggs to discuss how Cars.com adopted a server-driven UI (SDUI) architecture powered by Elixir and GraphQL to deliver consistent, updatable interfaces across web, iOS, and Android. We explore why SDUI matters for feature velocity, how a mature design system and schema planning make it feasible, and what it takes, culturally and technically, to move UI logic from client code into a unified backend. Key topics discussed in this episode: SDUI fundamentals and how it differs from traditional server-side rendering GraphQL as the single source of truth for UI components and layouts Defining abstract UI components on the server to eliminate duplicate logic Leveraging a robust design system as the foundation for SDUI success API-first development and cross-team coordination for schema changes Mock data strategies for early UI feedback without breaking clients Handling breaking changes and hot-fix deployments via server-side updates Enabling flexible layouts and A/B testing through server-controlled ordering Balancing server-driven vs. client-managed UI Iterative SDUI rollout versus “big-bang” migrations in large codebases Using type specs and Dialyxir for clear cross-team communication Integration testing at the GraphQL layer to catch UI regressions early Quality engineering’s role in validating server-driven interfaces Production rollback strategies across web and native platforms Considerations for greenfield projects adopting SDUI from day one Zack and Ethan's upcoming Instrumenting Elixir Apps book Links mentioned: https://cars.com https://github.com/absinthe-graphql/absinthe Telemetry & Observability for Elixir Apps Ep: https://youtu.be/1V2xEPqqCso https://www.phoenixframewo…","meta_description":"Zack Kayser, Staff Software Engineer at cars.com, joins Elixir Wizards Sundi Myint and Charles Suggs to discuss how Cars.com adopted a server-driven UI (S…","key_points":[],"chapters":[],"topics":[],"duration_seconds":2958,"processing_state":"processed","actions":[{"name":"request_transcript","method":"POST","url":"https://stenobird.com/v1/public/podcasts/elixir-wizards/episodes/sdui-at-scale-graphql-elixir-at-cars-com-with-zack-kayser/transcription-requests","description":"Idempotently request low-priority transcript generation for this episode."},{"name":"read_markdown","method":"GET","url":"https://stenobird.com/podcast/elixir-wizards/sdui-at-scale-graphql-elixir-at-cars-com-with-zack-kayser.md","description":"Read the agent-friendly Markdown representation of this episode resource."}]}}