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This article explains the roles of load balancers and API gateways, compares their layer focus, features, and performance characteristics, and outlines when to use each technology—especially in micro‑service architectures and high‑throughput network entry points.
Replit engineers analyzed why container shutdown on preemptible VMs caused REPL sessions to stall for up to a minute, identified Docker's network‑release bottleneck, and implemented a direct SIGKILL workaround that reduced error rates and startup latency dramatically.
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