lrucache_benchmark_test.go

/**
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package lrucache

import (
	"math/rand"
	"testing"
	"time"
)

var lru *LRUCache

const alphanum = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"

func init()  {
	lru = NewLRUCache(1024*1024*1, 1)
}

func RandomCreateBytes(n int) []byte {
	const alphanum = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"
	rand.Seed(time.Now().Unix())
	var bytes []byte
	for i:=0; i<n; i++ {
		bytes = append(bytes, alphanum[rand.Int31n(62)])
	}
	return bytes
}

func BenchmarkLRUCache_Put(b *testing.B) {
	for i := 0; i < b.N; i++ {
		lru.Put("aaaaaaaaaa", "aaaaaaaaaaaa")
	}
}

func BenchmarkLRUCache_PutRand(b *testing.B) {
	randbyte := RandomCreateBytes(b.N+5)
	rand.Seed(time.Now().Unix())
	for i := 0; i < b.N; i++ {
		key := (randbyte[i: i+5])
		lru.Put(string(key), "aaaaaaaaaaaaaaa")
	}
}

func BenchmarkLRUCache_Get(b *testing.B) {
	lru.Put("aaaaaaaaaa", "aaaaaaaaaaaa")
	for i := 0; i < b.N; i++ {
		lru.Get("aaaaaaaaaa")
	}
}

func BenchmarkLRUCache_Insert(b *testing.B) {
	for i := 0; i < b.N; i++ {
		lru.Insert([]byte("aaaaa"), nil, 5, nil)
	}
}

func BenchmarkLRUCache_InsertRand(b *testing.B) {
	randbyte := RandomCreateBytes(b.N+5)
	rand.Seed(time.Now().Unix())
	for i := 0; i < b.N; i++ {
		key := (randbyte[i: i+5])
		lru.Insert(key, nil, 1000, nil)
	}
}