Можно ли используя Go спроектировать high-frequency trading систему, чувствительную к задержкам?

Go can be used for developing high-frequency trading (HFT) systems, but with caveats. Go has good performance and a convenient concurrency model, which helps in writing scalable and responsive applications.

However, HFT systems require minimal latency, often at the microsecond level, and predictable behavior without garbage collector pauses. The standard GC in Go can cause unpredictable pauses, which is critical for HFT.

To minimize delays, HFT projects in Go employ:

• Code optimization to minimize allocations and memory operations.
• Profiling and low-level optimizations.
• In some cases, using specialized implementations or workarounds to reduce GC impact.

Nevertheless, for the most stringent latency requirements, C or C++ are often chosen due to finer control over memory and execution time.

An example of a simple timer in Go showing minimal delay:

package main

import (
	"fmt"
	"time"
)

func main() {
	start := time.Now()
	// Simulation of processing
	time.Sleep(10 * time.Microsecond)
	elapsed := time.Since(start)
	fmt.Printf("Elapsed: %s\n", elapsed)
}

In conclusion, Go is suitable for HFT if the delay requirements are not extreme, or if the team is willing to invest in optimizations and workarounds for language limitations.