> Markdown version of [/@raphael-de-lio](https://www.wearedevelopers.com/@raphael-de-lio). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Raphael De Lio Developer Advocate at Redis exploring AI context, Kotlin, and distributed systems. ## About Raphael De Lio builds and teaches at Redis, focusing on developer advocacy and distributed systems. He spends most of his time in Java and Kotlin, helping developers solve database problems faster. Recently, he has been exploring the mechanics of AI models. His talk on context engines breaks down why production agents fail when data is fragmented or stale, arguing that context quality matters just as much as the model itself. Originally from Brazil, he spent six years in Portugal before moving to the Netherlands, where he organizes the Dutch Kotlin User Group. ## Past Sessions ### World Congress 2026 Europe 路 July 8, 2026 Berlin, Germany - [Context is all you need](https://www.wearedevelopers.com/videos/100294-context-is-all-you-need) 路 30 min 路 馃帴 Watch recording ## Videos - [Context is all you need](https://www.wearedevelopers.com/videos/100294-context-is-all-you-need) 路 Raphael De Lio, Samuel Agbede ## WeAreDevelopers LIVE - [Devs vs. Marketers, COBOL and Copilot, Make Live Coding Easy and more - The Best of LIVE 2025 - Part 3](https://www.wearedevelopers.com/videos/1766-devs-vs-marketers-cobol-and-copilot-make-live-coding-easy-and-more-the-best-of-live-2025-part-3) 路 Chris Heilmann, Daniel Cranney, Raphael De Lio, Tim Cadenbach, Julie Kordick, Jan Moser, Elio Struyf, Johanna Pirker, Marc Duiker, Raymond Camden - [WeAreDevelopers LIVE - Vector Similarity Search Patterns for Efficiency and more](https://www.wearedevelopers.com/videos/1709-wearedevelopers-live-vector-similarity-search-patterns-for-efficiency-and-more) 路 Chris Heilmann, Daniel Cranney, Raphael De Lio, Advocate At Redis ## Articles - [Introducing Redis Agent Memory Server](https://www.wearedevelopers.com/magazine/699-introducing-redis-agent-memory-server) ## Links - [X](https://twitter.com/raphaeldelio) - [LinkedIn](https://linkedin.com/in/raphaeldelio)