How One Engineer Cut Database Query Time 90 Percent With Indexes
from The Software Engineering Podcast with Fexingo: Code, Architecture, and Engineering Best Practices Hosted by Fexingo
Lucas and Luna dive into the story of how a single database index saved a startup's user-facing dashboard. When a page load hit 12 seconds during peak traffic, one engineer found the culprit: a full table scan on a 40-million-row table. The fix wasn't a $10,000 database upgrade or a caching layer — it was a composite index on three columns. Lucas walks through the query plan, the index structure, and the before-and-after numbers: query time dropped from 8.2 seconds to 210 milliseconds. Luna asks about trade-offs: index maintenance overhead, write performance, and how to spot missing indexes early. This episode is a practical walkthrough of one of the most underrated engineering wins: knowing when and how to index. #DatabaseIndexing #PostgreSQL #QueryOptimization #EngineeringBestPractices #FullTableScan #CompositeIndex #SQL #QueryPlan #DatabasePerformance #StartupEngineering #Tech #SoftwareEngineering #CodeArchitecture #FexingoBusiness #BusinessPodcast #Technology #PerformanceTuning #BackendEngineering Keep every episode free: buymeacoffee.com/fexingo
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