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The CTO Podcast with Fexingo: Technical Leadership, Architecture, and Engineering Org The CTO Podcast with Fexingo: Technical Leadership, Architecture, and Engineering Org Fexingo Bitcoin News Digest Podcast Bitcoin News Digest Podcast Mike Richardson Green Ticker Tales Green Ticker Tales Greentickertales Reuters World News Reuters World News Stephani Schupbach Ask Jason Weiss Show Ask Jason Weiss Show WGSN-DB Going Solo Network The Gemini Brief - Investment Deep Dives The Gemini Brief - Investment Deep Dives Lukasz Tomicki and LRT Capital Management LLC Autoblog News Autoblog News The Dr. April Jasper Show The Dr. April Jasper Show Dr. April Jasper Supply chain بالعربي Supply chain بالعربي Maytham Al-Khairulla ميثم الخيرالله Audio-CD.at Indie Podcasts: Wiener Börse, Sport, Musik (und mehr) Audio-CD.at Indie Podcasts: Wiener Börse, Sport, Musik (und mehr) Christian Drastil Comm. (Agentur für Investor Relations und Podcasts) Crypto News Today | 2 Min News | The Daily News Now! Crypto News Today | 2 Min News | The Daily News Now! The Daily News Now! The Sport Market The Sport Market Sportsnet NomadTreneur NomadTreneur AC Wilson Coffee, Culture, and the Capitol Coffee, Culture, and the Capitol California Family Council KGCI: Real Estate on Air KGCI: Real Estate on Air KGCI: Real Estate on Air ColdFusion ColdFusion Dagogo Tony Robbins Podcast Daily Tony Robbins Podcast Daily Tony Bloomberg News Now Bloomberg News Now Samejo Defensive Security Podcast - Malware, Hacking, Cyber Security & Infosec Defensive Security Podcast - Malware, Hacking, Cyber Security & Infosec Jerry Bell and Andrew Kalat The Employment Law Show The Employment Law Show AM640 Business News Today | 2 Min News | The Daily News Now! Business News Today | 2 Min News | The Daily News Now! The Daily News Now! The Prison Show The Prison Show David Collingsworth - Producer 90.1 FM KPFT - The Prison Show Under the Influence with Terry O'Reilly Under the Influence with Terry O'Reilly Apostrophe Podcast Network Diversity Conversations W/ Eric Ellis & Tommie Lewis Diversity Conversations W/ Eric Ellis & Tommie Lewis Eric Ellis and Tommie Lewis High Spirits: The Cannabis Business Podcast High Spirits: The Cannabis Business Podcast AnnaRae Grabstein and Ben Larson MasilyJohn MasilyJohn MasilyJohn That Home Loan Hub That Home Loan Hub Zebunisso Alimova Accès au Marché Mondial des Dispositifs Médicaux Accès au Marché Mondial des Dispositifs Médicaux Pure Global Глобальный доступ на рынок медицинских изделий Глобальный доступ на рынок медицинских изделий Pure Global चिकित्सा उपकरण वैश्विक बाजार पहुंच चिकित्सा उपकरण वैश्विक बाजार पहुंच Pure Global Tıbbi Cihazlar Küresel Pazar Erişimi Tıbbi Cihazlar Küresel Pazar Erişimi Pure Global Akses Pasar Global Alat Kesehatan Akses Pasar Global Alat Kesehatan Pure Global Fantasy Stock Exchange Fantasy Stock Exchange Corey Buschlen Finance Tech Brief By HackerNoon Finance Tech Brief By HackerNoon HackerNoon Tech Stories Tech Brief By HackerNoon Tech Stories Tech Brief By HackerNoon HackerNoon Web3 Tech Brief By HackerNoon Web3 Tech Brief By HackerNoon HackerNoon Business Tech Brief By HackerNoon Business Tech Brief By HackerNoon HackerNoon
The CTO Podcast with Fexingo: Technical Leadership, Architecture, and Engineering Org

Business

The CTO Podcast with Fexingo: Technical Leadership, Architecture, and Engineering Org

Fexingo

How Loom Rebuilt Its Video Engine for Async Communication

June 27, 2026 2:43am 9 min

In this episode of The CTO Podcast, Lucas and Luna dive into how Loom rebuilt its video recording and streaming engine to handle over 200 million videos per year while keeping latency under one second for uploads and pla...

How Discord Rebuilt Its Voice Engine for Zero Packet Loss

June 26, 2026 2:55pm 11 min

Lucas and Luna explore how Discord moved from a standard WebRTC stack to a custom UDP transport layer, achieving sub-50ms latency and near-zero packet loss during peak gaming events like Call of Duty launches. They break...

How Airbnb Rebuilt Search for 8 Million Listings

June 26, 2026 2:31am 10 min

Lucas and Luna dive into the technical decisions behind Airbnb's 2024 search architecture overhaul. With 8 million active listings and billions of queries daily, Airbnb moved from a monolithic Elasticsearch cluster to a ...

How GitLab Built a Single Codebase for One Million CI Pipelines

June 25, 2026 2:41pm 7 min

In this episode, Lucas and Luna dive into the specific technical decisions GitLab made to scale its CI/CD platform from tens of thousands of pipelines to over one million per day. They focus on the choice of a monolithic...

How Slack Rebuilt Its Search Index for 10 Million Daily Queries

June 25, 2026 2:31am 7 min

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 engin...

How Notion Rebuilt Its Sync Engine for Offline-First

June 24, 2026 2:53pm 10 min

Lucas and Luna dive into Notion's technical journey to rebuild its block-based sync engine for offline-first and real-time collaboration. They explore the architectural shift from optimistic local writes to a hybrid loca...

How Notion Rebuilt Its Block Engine for Hybrid Local-Sync

June 24, 2026 2:33am 6 min

Notion's block-level architecture was designed for single-user documents. But as the product scaled to 100 million users, real-time collaboration exposed deep cracks in its sync model. This episode unpacks how Notion's e...

How MongoDB Rebuilt Its Document Store for Multi-Terabyte Workloads

June 23, 2026 2:52pm 9 min

Episode 69 of The CTO Podcast. Lucas and Luna dive into how MongoDB's engineering team redesigned their core storage engine to handle multi-terabyte workloads without sacrificing developer velocity. They break down the s...

How Doordash Rebuilt Delivery Logistics for Peak Demand

June 23, 2026 2:30am 8 min

This episode of The CTO Podcast dives into how Doordash rebuilt its delivery logistics platform to handle peak demand during the COVID-19 pandemic and beyond. Lucas and Luna explore the specific architecture decisions be...

How Cloudflare Migrated 30 Million Requests Per Second Without Downtime

June 22, 2026 2:34pm 5 min

In this episode of The CTO Podcast, Lucas and Luna dive into Cloudflare's massive infrastructure migration: moving 30 million requests per second from a legacy edge architecture to a new proxy stack without a single minu...

How Canva Built a Collaborative Design Platform at Scale

June 22, 2026 2:28am 9 min

In this episode, Lucas and Luna dive into the architectural decisions behind Canva's collaborative design platform, which serves over 100 million monthly active users. They explore how the Australian unicorn rebuilt its ...

How GitHub Actually Migrated 100 Million Repos to a New Storage Engine

June 21, 2026 2:54pm 9 min

In 2024, GitHub faced an impossible problem: its 15-year-old storage backend, built on bare Git repositories, couldn't keep up with 100 million active repos, AI-generated commits, and terabyte-scale monorepos. This episo...

How Walmart Rebuilt Its Supply Chain with Real-Time Data

June 21, 2026 2:23am 11 min

In this episode, Lucas and Luna dive into Walmart's massive supply chain overhaul, focusing on how the retail giant moved from batch processing to real-time data pipelines. They discuss the technical challenges of integr...

How Pinterest Rebuilt Its Recommendation Engine for 500 Million Users

June 20, 2026 2:40pm 13 min

In this episode of The CTO Podcast, Lucas and Luna dive into how Pinterest's engineering team rebuilt its core recommendation engine from a batch-processing pipeline to a real-time, graph-based system serving over 500 mi...

How Anthropic Built Claude 3 for Enterprise Reliability

June 20, 2026 2:20am 11 min

In this episode of The CTO Podcast, Lucas and Luna dive into the technical architecture behind Anthropic's Claude 3, focusing on how the team designed for enterprise-grade reliability at scale. They discuss concrete deci...

How Spotify Rebuilt Its Recommender System for 600 Million Users

June 19, 2026 2:36pm 12 min

In this episode of The CTO Podcast, Lucas and Luna dive into how Spotify rebuilt its core recommender engine from a batch-based collaborative filtering system to a real-time graph neural network serving 600 million users...

How Netflix Rebuilt Its CDN for 300 Million Subscribers

June 19, 2026 2:03am 12 min

Netflix's content delivery network, Open Connect, delivers over half of the world's internet traffic at peak. In this episode, Lucas and Luna dive deep into the specific architectural decisions Netflix made to scale its ...

How Walmart Rebuilt Its Supply Chain with Real-Time Data

June 18, 2026 2:20pm 7 min

Walmart's supply chain is the largest in the world, moving over 5 billion units annually. In this episode, Lucas and Luna explore how Walmart rebuilt its supply chain on real-time data from edge to shelf. They break down...

How Datadog Monitors Its Own Infrastructure

June 18, 2026 2:11am 8 min

Episode 58 of The CTO Podcast goes inside Datadog's engineering org to explore how the company monitors its own 100-terabyte infrastructure. Lucas and Luna walk through Datadog's dogfooding culture, the architectural cha...

How Figma Rebuilt Its Multiplayer Engine for 500 Users per File

June 17, 2026 2:12pm 6 min

Figma's multiplayer engine lets hundreds of designers edit the same file simultaneously. How did they rebuild it from scratch to handle over 500 concurrent users per document without conflicts or lag? Lucas and Luna brea...

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