storage: add a simple backend and kv example

storage/backend/backend_bench_test.go

@@ -0,0 +1,36 @@
+package backend
+
+import (
+	"crypto/rand"
+	"os"
+	"testing"
+	"time"
+)
+
+func BenchmarkBackendPut(b *testing.B) {
+	backend := New("test", 100*time.Millisecond, 10000)
+	defer backend.Close()
+	defer os.Remove("test")
+
+	// prepare keys
+	keys := make([][]byte, b.N)
+	for i := 0; i < b.N; i++ {
+		keys[i] = make([]byte, 64)
+		rand.Read(keys[i])
+	}
+	value := make([]byte, 128)
+	rand.Read(value)
+
+	batchTx := backend.BatchTx()
+
+	batchTx.Lock()
+	batchTx.UnsafeCreateBucket([]byte("test"))
+	batchTx.Unlock()
+
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		batchTx.Lock()
+		batchTx.UnsafePut([]byte("test"), keys[i], value)
+		batchTx.Unlock()
+	}
+}