How One Startup Uses Incremental Rewrites to Avoid the Big Rewrite Trap

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How One Startup Uses Incremental Rewrites to Avoid the Big Rewrite Trap

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Startups often fall into the trap of planning a full system rewrite — a multi-month bet that can sink the company. In this episode, Lucas and Luna examine how one startup avoided that trap by using incremental rewrites, replacing their monolithic e-commerce backend piece by piece over eighteen months without freezing feature development. They break down the strategy: strangler fig pattern, internal API contracts, and feature flags that let the team ship new code in production alongside the legacy system. Lucas cites data from a real case where a mid-stage SaaS company cut its migration risk to near zero by keeping both systems live until each module was proven. Luna pushes on whether every team can afford the complexity of running two systems in parallel, and Lucas explains how small, reversible steps actually reduce total cognitive load. The episode closes with a practical rule of thumb: if a rewrite takes longer than three months, you're probably doing it wrong. #IncrementalRewrite #StranglerFigPattern #TechnicalDebt #SoftwareEngineering #StartupEngineering #MigrationStrategy #LegacyCode #FeatureFlags #EngineeringVelocity #Refactoring #BusinessAndTechnology #TheTechnicalCoFounder #FexingoBusiness #BusinessPodcast #EngineeringCulture #MonolithToMicroservices #CodeMigration #RiskManagement Keep every episode free: buymeacoffee.com/fexingo

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