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Choosing an Efficient Backend Framework for Kubernetes Scale: What TechEmpower Round 23 Reveals

When backend services are designed for horizontal scaling in Kubernetes clusters, raw throughput is not just a benchmark vanity metric — it directly influences replica count, resource pressure, and cost. Using TechEmpower Framework Benchmarks Round 23 (March 2025), this post compares modern Node.js and Bun frameworks and estimates how relative throughput differences can translate into significantly fewer pods at a fixed target load — while staying clear about what these benchmarks can and cannot tell us.