How can the frequency of garbage collector calls be reduced? What optimization methods do you know?

To reduce the frequency of garbage collector (GC) calls in Go, several approaches can be used:

• Reducing allocations: minimize the creation of temporary objects, use object pools (sync.Pool), reuse slices and structures.
• Optimizing data structures: choose more compact types, avoid excessive references.
• Adjusting GC parameters: you can control the GOGC parameter (the percentage growth of the heap at which GC is triggered). For example, increasing GOGC so that GC runs less frequently, but this will increase memory consumption.

Example of changing GOGC:

import "runtime"

func main() {
    runtime.GOMAXPROCS(4) // example setting
    debug.SetGCPercent(200) // increase GC threshold to 200%
}

• Profiling: use pprof to identify hot spots of allocations and optimize them.

In summary, reducing GC frequency is achieved by decreasing the number of created objects and adjusting collector parameters.