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Spring's statically-typed nature allows the JVM to perform aggressive optimizations. Additionally, Spring requires explicit resource management, while Rails' automatic conventions add overhead. Real-world benchmarks show Spring handling 6-10x more requests per second at the same hardware cost."},{"question":"Can Rails handle enterprise-scale applications?","answer":"Rails can handle enterprise applications, but not at Netflix-scale (100K+ concurrent users). It excels for internal tools, content platforms, and systems with <10K concurrent users. For enterprise adoption, companies like Shopify use Rails with heavy caching (Redis), CDNs, and database optimization. However, most enterprises prefer Spring for mission-critical systems due to its proven performance and ecosystem maturity."},{"question":"Which has a larger job market in 2026?","answer":"Java/Spring jobs outnumber Rails by approximately 8:1 in 2026. Java has 420,000+ job listings globally vs Rails' ~52,000. 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