Episodes

  • How APIs Use WebTransport for Next-Gen Real-Time Communication

    How APIs Use WebTransport for Next-Gen Real-Time Communication
    Jun 15 2026
    WebTransport is a new protocol that combines the low latency of WebSockets with the reliability of HTTP/3. In this episode, Lucas and Luna explore how WebTransport enables efficient, bidirectional, real-time communication for applications like live gaming, collaborative editing, and IoT streaming. They walk through a concrete example: a startup building a multiplayer drawing app that switches from WebSockets to WebTransport, cutting latency by 40% and handling packet loss without retransmission delays. They discuss the protocol's use of QUIC streams, unidirectional streams, and datagrams, and compare it to WebSockets and HTTP/2 server push. They also cover current browser support, polyfill options, and when NOT to use WebTransport. If your app needs real-time data at scale, this episode gives you a practical framework for evaluating WebTransport versus existing alternatives. #WebTransport #QUIC #HTTP3 #RealTimeCommunication #WebSockets #APIProtocols #Streaming #Latency #PacketLoss #Bidirectional #Datagrams #LiveGaming #CollaborativeEditing #IoT #BrowserAPIs #Technology #FexingoBusiness #BusinessPodcast Keep every episode free: buymeacoffee.com/fexingo
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    10 mins
  • How APIs Use WebSockets for Persistent Connections

    How APIs Use WebSockets for Persistent Connections
    Jun 14 2026
    Episode 51 of The API Podcast digs into WebSockets — the protocol that flips the typical request-response model on its head. Lucas and Luna walk through a concrete example: how a real-time dashboard for a logistics startup cut latency from three seconds to under a hundred milliseconds by switching from polling to a persistent WebSocket connection. They discuss when WebSockets make sense (and when they don't), the upgrade handshake mechanics, how to handle reconnection gracefully, and why companies like Slack and Trello rely on them for live collaboration. If you want to understand the trade-offs between REST polling, Server-Sent Events, and full-duplex sockets, this episode gives you the mental model to make the call. #WebSockets #RealTimeAPI #PersistentConnections #APIProtocols #Latency #Polling #ServerSentEvents #FullDuplex #Slack #Trello #Logistics #TechPodcast #TheAPIPodcast #FexingoBusiness #BusinessPodcast #DeveloperTools #WebDevelopment #DataStreaming Keep every episode free: buymeacoffee.com/fexingo
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    10 mins
  • How APIs Handle Backward Compatibility Without Version Bumps

    How APIs Handle Backward Compatibility Without Version Bumps
    Jun 14 2026
    In this milestone 50th episode, Lucas and Luna dive into how modern API teams are moving away from explicit versioning in favor of backward-compatible evolution. They examine a real-world case: how a major payment processor—think Stripe-level scale—added a new required field to an existing endpoint without bumping the version number or breaking existing integrations. The conversation covers the three technical pillars that make this possible: additive-only changes, tolerance for unknown fields, and the use of `X-Forwarded-Compatibility` headers. Listeners will learn the concrete patterns that let APIs evolve continuously, and why 'never versioning' is becoming the gold standard for platform teams. #API #BackwardCompatibility #NeverVersioning #APIEvolution #AdditiveChanges #Stripe #PaymentProcessor #WebAPI #REST #GraphQL #OpenAPI #CompatibilityHeaders #DeveloperExperience #PlatformEngineering #Technology #TechPodcast #FexingoBusiness #BusinessPodcast Keep every episode free: buymeacoffee.com/fexingo
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    13 mins
  • How APIs Are Designing for Post-Quantum Cryptography

    How APIs Are Designing for Post-Quantum Cryptography
    Jun 13 2026
    Episode 49 of The API Podcast explores how API designers are preparing for the threat of quantum computers breaking current encryption. Lucas and Luna discuss the specific algorithms NIST is standardizing, why hybrid certificates matter now, and how companies like Cloudflare are already testing post-quantum TLS. They examine the timeline concern—harvest now, decrypt later—and what that means for API security today. The episode covers NIST's finalized standards from 2024, the move to hybrid key exchanges, and the practical steps API developers can take before quantum computers arrive. A grounded, forward-looking conversation without the hype. #PostQuantumCryptography #APISecurity #NIST #QuantumComputing #TLS #Cryptography #Cloudflare #HybridCertificates #HarvestNowDecryptLater #PQC #Technology #FexingoBusiness #BusinessPodcast #API #WebSecurity #Encryption #Standards #FutureProof Keep every episode free: buymeacoffee.com/fexingo
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    14 mins
  • How APIs Use Webhooks for Real-Time Event Delivery

    How APIs Use Webhooks for Real-Time Event Delivery
    Jun 13 2026
    Webhooks have become the backbone of real-time event-driven integrations across modern APIs. In this episode, Lucas and Luna break down how webhooks differ from polling, why platforms like Stripe and GitHub rely on them for instant notifications, and the hidden challenges developers face—retry logic, security verification, and idempotency. They walk through a concrete example: a payment webhook from Stripe that updates an order status, explaining the exact payload structure and verification steps. Lucas shares data on how webhooks reduce latency from minutes to milliseconds compared to traditional polling, and Luna highlights the gotcha of webhook delivery guarantees and the trade-off between at-least-once and exactly-once semantics. No fluff—just a practical look at why webhooks matter and how to implement them safely. Perfect for API developers, backend engineers, and anyone building event-driven systems. #Webhooks #EventDrivenArchitecture #APIs #RealTime #Stripe #GitHub #WebhookSecurity #PayloadVerification #RetryLogic #Idempotency #Polling #EventDelivery #DeveloperExperience #BackendEngineering #Technology #FexingoBusiness #BusinessPodcast #TheAPIPodcast Keep every episode free: buymeacoffee.com/fexingo
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    8 mins
  • How API Stubs Beat Real Backends for Testing

    How API Stubs Beat Real Backends for Testing
    Jun 12 2026
    Lucas and Luna explore the practice of API stubbing — how developers replace real backends with lightweight mock services during testing. They break down a specific case: a fintech startup that cut its integration-test suite from 45 minutes to under 3 by stubbing payment and ledger APIs. The episode contrasts stubs with mocks and fakes, explains when stubbing hides real bugs (the 'false green' problem), and walks through a pragmatic decision tree for choosing a test-double strategy. Listeners learn why companies like Stripe and Twilio publish official stub libraries and how the practice fits into a shift-left testing philosophy. #APIStubbing #MockServices #SoftwareTesting #TestDoubles #IntegrationTesting #Stripe #Twilio #ShiftLeft #DeveloperTools #TechPodcast #FexingoBusiness #BusinessPodcast #APITesting #Fintech #Mocking #TestAutomation #BackendDevelopment #SoftwareEngineering Keep every episode free: buymeacoffee.com/fexingo
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    11 mins
  • Why API Design Patterns Need Formal Contracts

    Why API Design Patterns Need Formal Contracts
    Jun 11 2026
    Episode 45 of The API Podcast dives into the growing rift between informal design conventions and the push for machine-verifiable API contracts. Lucas and Luna examine how tools like OpenAPI 4.0, AsyncAPI, and JSON Schema enable automated validation, break fewer clients, and catch mismatches before they reach production. Through the example of a mid-size e-commerce platform that cut integration bugs by 67% by adopting contract-driven design, they explore why formal contracts matter even for small teams. The hosts also discuss the tension between speed and safety, and why 'design first' remains more aspiration than reality for most organizations. #API #APIDesign #OpenAPI #AsyncAPI #JSONSchema #WebAPI #REST #GraphQL #DeveloperExperience #Integration #SchemaEvolution #APIContracts #Technology #SoftwareEngineering #FexingoBusiness #BusinessPodcast #TheAPIPodcast #DesignFirst Keep every episode free: buymeacoffee.com/fexingo
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    11 mins