How One Engineer Optimised an API with Branch Prediction
from The Software Engineering Podcast with Fexingo: Code, Architecture, and Engineering Best Practices Hosted by Fexingo
Episode 71 of The Software Engineering Podcast tells the story of a senior engineer who discovered that a single branch misprediction in a hot loop was causing a 35 percent latency spike on a critical API endpoint. The engineer used perf stat to identify the bottleneck, rearranged conditional logic to match common data patterns, and cut p99 latency from 200ms to 130ms. Lucas and Luna break down what branch prediction is, how CPU pipelines work, and why sometimes the cleverest optimisation is helping the hardware guess right. They also discuss when micro-optimisations matter versus when they're a waste of time. A concrete case study for anyone who writes performance-sensitive code. #SoftwareEngineering #PerformanceOptimisation #BranchPrediction #CPUPipeline #Latency #PerfStat #APIOptimisation #LowLevel #SystemsProgramming #GoLang #Profiling #Hardware #Compiler #TechPodcast #FexingoBusiness #BusinessPodcast #CodingBestPractices #EngineeringExcellence Keep every episode free: buymeacoffee.com/fexingo
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