May 6
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What happens when 50 million users simultaneously request data, and each object is 5 megabytes? Without the Flyweight Pattern, your server is dead before the final whistle blows. In this video, we break down the Flyweight Design Pattern in Go — the memory optimization technique used in game engines, browsers, trading systems, and any system where data is large and users are many. You'll learn: ✅ The intrinsic vs. extrinsic state split — the pattern's key design challenge ✅ How to build a concurrent-safe Flyweight Factory in Go (with sync.RWMutex) ✅ Why pointer comparison is the definitive Flyweight test ✅ Go's iota keyword — elegant constant enumeration explained ✅ Flyweight vs. Singleton — the distinction that confuses even experienced engineers ✅ sync.Pool — Go's stdlib implementation of Flyweight for transient objects ✅ The double-checked locking pattern for concurrent factory initialization Whether you're building at game-engine scale, financial data systems, or high-traffic microservices, this pattern changes how you think about memory.