Performance
How Go runs, and what that means in practice.
Execution model
Compiled ahead of time to a single static binary; compilation itself is very fast.
Memory
Concurrent, non-generational, low-pause GC tuned for latency; GOGC and GOMEMLIMIT tune it.
Concurrency
Goroutines start with small stacks and are multiplexed onto OS threads by the runtime scheduler (M:N).
In practice
Typically slower than C++ or Rust for raw CPU work but with far simpler concurrency; very fast start-up suits containers and CLIs.
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