{"podcast":{"title":"The CTO Podcast with Fexingo: Technical Leadership, Architecture, and Engineering Org","slug":"the-cto-podcast-with-fexingo-technical-leadership-architecture-and-engineering-org-7871807","podcast_index_feed_id":7871807,"rss_url":"https://feeds.fexingo.com/business/the-cto-podcast.xml","website_url":"https://www.fexingo.com/","image_url":"https://audio.fexingo.com/business/the-cto-podcast/cover.png","author":"Fexingo","episode_count":76,"summary":"Lucas and Luna sit down in front of a whiteboard to dissect the decisions that shape technical organizations. Each episode of The CTO Podcast with Fexingo examines a specific engineering leadership challenge — from scaling a microservices architecture without creating a distributed monolith, to managing the cognitive load of a 200-engineer org, to choosing between a monorepo and polyrepo strategy based on team topology. The conversations are grounded in real-world cases: how Etsy restructured its data pipeline after a 2019 outage, why Stripe’s API versioning policy reduces breaking changes, or what Basecamp’s choice of SQLite over PostgreSQL says about product philosophy. Lucas brings the journalistic rigor — citing commit histories, RFCs, and postmortems — while Luna pushes back with the pragmatics of org dynamics, hiring constraints, and technical debt. There are no hot takes, no vendor pitches, no ‘best practices’ without trade-offs. Each episode ends with a specific tension left unresolved: the optimal number of direct reports for a VP of Engineering, the point at which a monolith should be broken apart, or whether a platform team should own the CI/CD pipeline. The listener is…","last_synced_at":"2026-06-27T14:18:24.326804+00:00","page_url":"https://stenobird.com/podcast/the-cto-podcast-with-fexingo-technical-leadership-architecture-and-engineering-org-7871807"},"episode":{"title":"How Slack Rebuilt Its Search Index for 10 Million Daily Queries","slug":"how-slack-rebuilt-its-search-index-for-10-million-daily-queries","published_at":"2026-06-25T07:31:09+00:00","page_url":"https://stenobird.com/podcast/the-cto-podcast-with-fexingo-technical-leadership-architecture-and-engineering-org-7871807/how-slack-rebuilt-its-search-index-for-10-million-daily-queries","show_page_url":"https://stenobird.com/podcast/the-cto-podcast-with-fexingo-technical-leadership-architecture-and-engineering-org-7871807","url":"https://audio.fexingo.com/business/the-cto-podcast/episode-0072.mp3","audio_url":"https://audio.fexingo.com/business/the-cto-podcast/episode-0072.mp3","summary":"Slack's search is used over 10 million times a day. But the original Elasticsearch-based index couldn't keep up as the platform grew to billions of messages. In this episode, the CTO Podcast breaks down how Slack's engineering team rebuilt its search infrastructure from the ground up — migrating from a single Elasticsearch cluster to a custom search engine called 'Search It'. We cover why they moved away from Elasticsearch, how they sharded data across hundreds of nodes, and the key trade-offs they made to keep search latency under 200 milliseconds. Lucas and Luna also discuss the human side of a multi-year migration: getting buy-in from leadership, managing developer burnout, and the moment the new search went fully live. If you're responsible for scaling a product that depends on fast, reliable search, this episode is packed with practical lessons. #Slack #SearchEngine #Elasticsearch #Scalability #Infrastructure #Migration #Engineering #CTO #TechLeadership #Architecture #Productivity #Business #Technology #FexingoBusiness #BusinessPodcast #CTOPodcast #RealTimeSearch #Backend Keep every episode free: buymeacoffee.com/fexingo","meta_description":"Slack's search is used over 10 million times a day. But the original Elasticsearch-based index couldn't keep up as the platform grew to billions of messag…","key_points":[],"chapters":[],"topics":[],"duration_seconds":471,"processing_state":"not_requested","actions":[{"name":"request_transcript","method":"POST","url":"https://stenobird.com/v1/public/podcasts/the-cto-podcast-with-fexingo-technical-leadership-architecture-and-engineering-org-7871807/episodes/how-slack-rebuilt-its-search-index-for-10-million-daily-queries/transcription-requests","description":"Idempotently request low-priority transcript generation for this episode."},{"name":"read_markdown","method":"GET","url":"https://stenobird.com/podcast/the-cto-podcast-with-fexingo-technical-leadership-architecture-and-engineering-org-7871807/how-slack-rebuilt-its-search-index-for-10-million-daily-queries.md","description":"Read the agent-friendly Markdown representation of this episode resource."}]}}