How One Engineer Fixed a Serverless Cold Start Nightmare

What this episode covers

In this episode, Lucas and Luna dive into the hidden cost of serverless: cold starts. They break down a real case where a fintech startup saw API latency spike from 50ms to 2.5 seconds under load, all because of Lambda cold starts. They walk through the root cause—VPC cold starts and bloated deployment packages—and the fix: provisioned concurrency combined with a lightweight runtime written in Rust. Along the way, they discuss tradeoffs between cost and latency, and why understanding cold start patterns matters for any architecture that claims to be 'serverless.' No abstract theory—just a concrete engineering story with numbers you can use. #Serverless #ColdStart #Lambda #AWS #Rust #LatencyOptimization #Fintech #VPC #ProvisionedConcurrency #Infrastructure #CloudComputing #PerformanceEngineering #ServerlessArchitecture #Technology #SoftwareEngineering #FexingoBusiness #BusinessPodcast #EngineeringPodcast Keep every episode free: buymeacoffee.com/fexingo

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