Latest / Tech Leadership with Fexingo: Engineering Managers, CTOs, and Technical Leadership Conversations
How CTOs Use the Strangler Fig Pattern to Replace Legacy Systems
In episode 139 of Tech Leadership with Fexingo, Lucas and Luna dive into the Strangler Fig pattern—a strategy for gradually replacing legacy systems without big-bang rewrites. They walk through a real-world example of a retail company extracting its payment module from a decade-old monolith, routing 5% of traffic to the new service, then scaling to 100% over six months. Along the way, they discuss dual-write strategies, feature flags, and the cost of maintaining old and new systems simultaneously. Lucas also shares a simple heuristic for deciding whether to strangle or rebuild from scratch…
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