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The Developer Tools Podcast with Fexingo: APIs, Infrastructure, and Software for Engineers

The Developer Tools Podcast with Fexingo: APIs, Infrastructure, and Software for Engineers

By: Fexingo
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Lucas and Luna examine the developer tools landscape — APIs, infrastructure, and software designed for engineers — through the lens of business viability and technical merit. Each episode picks a specific tool or platform: how it was built, what problem it solves, who pays for it, and whether its architecture gives it a durable advantage. They compare pricing models, study public SDKs and changelogs, and trace the decisions that turn an open-source side project into a billion-dollar company. No demos, no tutorials — just two co-hosts reading documentation, running benchmarks, and asking whether a tool's design actually makes engineers more productive or just more dependent. Past topics: the economics of API gateways, why gRPC is replacing REST in microservices, the rise of WebAssembly beyond the browser, and the hidden costs of managed Kubernetes. Listeners walk away with a concrete framework for evaluating developer tools — not as a user, but as a buyer, builder, or investor. What does it take for infrastructure software to earn the trust of engineers who have seen too many promises break in production? #DeveloperTools #APIs #Infrastructure #SoftwareEngineering #CloudComputing #OpenSourceBusiness #GRPC #WebAssembly #Kubernetes #SDKs #DevOps #PlatformEngineering #Technology #FexingoBusiness #BusinessPodcast #Business #EngineeringPodcast #TechBusiness Keep every episode free: buymeacoffee.com/fexingo© 2026 Fexingo. All rights reserved. Economics
Episodes
  • How API Fuzzing Exposes Hidden Security Flaws

    How API Fuzzing Exposes Hidden Security Flaws
    Jun 15 2026
    Lucas and Luna dig into API fuzzing — why sending random garbage to your endpoints is one of the most effective ways to find vulnerabilities before attackers do. They walk through a real case: a fintech startup that fuzzed its payment API and discovered an integer overflow that would have let a bad actor charge negative amounts. They explain how property-based testing frameworks like QuickCheck and Rust's proptest apply fuzzing logic to API contracts, catching edge cases that human-written tests miss. The episode covers input generation strategies, stateful vs. stateless fuzzing, and why most teams don't fuzz until after a breach. If you build or maintain an API, this episode will change how you think about test coverage. #API #Fuzzing #Security #SoftwareTesting #PropertyBasedTesting #EdgeCases #Vulnerability #Fintech #Rust #QuickCheck #DevTools #Business #Technology #FexingoBusiness #BusinessPodcast #LucasAndLuna #TheDeveloperToolsPodcast #Episode52 Keep every episode free: buymeacoffee.com/fexingo
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    10 mins
  • How API Deprecation Headers Prevent Integration Disasters

    How API Deprecation Headers Prevent Integration Disasters
    Jun 14 2026
    Episode 51 of The Developer Tools Podcast with Fexingo dives into a silent integration killer: API deprecation without proper headers. Lucas and Luna break down how companies like Stripe and Twilio use Sunset and Deprecation headers to give developers months of warning before breaking changes. They discuss a real case where a major payment API's undocumented deprecation caused a week-long outage for a SaaS platform, costing $200K in lost revenue. Learn the specific headers to add to your API responses, how to communicate timeline and migration path, and why most teams get this wrong. Essential for anyone building or consuming APIs at scale. #API #Deprecation #DeveloperTools #APIDesign #SunsetHeader #DeprecationHeader #BreakingChanges #APIVersioning #DeveloperExperience #Integration #Stripe #Twilio #SaaS #TechPodcast #Engineering #BusinessAndTechnology #FexingoBusiness #BusinessPodcast Keep every episode free: buymeacoffee.com/fexingo
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    9 mins
  • How API Versioning Strategies Reduce Deployment Friction

    How API Versioning Strategies Reduce Deployment Friction
    Jun 14 2026
    In Episode 50 of The Developer Tools Podcast, Lucas and Luna dive into the hidden costs and operational risks of choosing the wrong API versioning strategy. They compare URI versioning, header-based versioning, and query-parameter versioning using real-world examples from Stripe, Twilio, and GitHub's API v3 to v4 migration. The hosts break down trade-offs in caching, backward compatibility, and client migration overhead, and explain why a versionless approach with graceful deprecation can reduce deployment friction for engineering teams. If you're building or maintaining APIs used by hundreds of developers, this episode gives you the concrete factors to weigh before your next breaking change. Recorded June 14, 2026. #API #Versioning #Deprecation #DeveloperTools #BackwardCompatibility #Stripe #Twilio #GitHub #REST #GraphQL #SoftwareEngineering #Infrastructure #Productivity #TechStrategy #APIDesign #Business #FexingoBusiness #BusinessPodcast Keep every episode free: buymeacoffee.com/fexingo
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    9 mins
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