memory.go

package main

import (
	"bufio"
	"fmt"
	"os"
	"runtime/debug"
	"time"

	"github.com/allegro/bigcache"
	humanize "github.com/dustin/go-humanize"
)

func main() {
	cfg := bigcache.Config{
		Shards:             1024,
		LifeWindow:         30 * time.Minute,
		MaxEntriesInWindow: 1000 * 10 * 60,
		MaxEntrySize:       500,
		Verbose:            true,
		HardMaxCacheSize:   300,
		OnRemove:           nil,
		OnRemoveWithReason: nil,
	}
	cache, err := bigcache.NewBigCache(cfg)
	if err != nil {
		panic(err)
	}
	err = cache.Set("name", []byte("sakti dwi cahyono"))
	if err != nil {
		panic(err)
	}

	entry, err := cache.Get("name")
	fmt.Println("error get = ", err)
	fmt.Println(string(entry))
	i := 1
	go func() {
		for j := 0; j < 1000000000000000; j++ {
			cache.Set(fmt.Sprintf("%d", j), []byte("randomstring"))
			if j%100000 == 0 {
				debug.FreeOSMemory()
				fmt.Println(j)
			}

		}
	}()
	for {
		reader := bufio.NewReader(os.Stdin)
		reader.ReadString('\n')

		cache.Set(fmt.Sprintf("%d", i), []byte("randomstring"))
		fmt.Println("capacity = ", humanize.Bytes(uint64(cache.Capacity())))
		i += 1
	}
	/*
		_, err = cache.Get("name2")
		fmt.Println(err)
	*/
}