benchmark fix and update

Fixed double insert bug in BenchmarkE2EGocqlInsert. Modernized other
benchmarks to use new API that releases query where applicable. Updated
benchmark results with new version of libraries and Scylla 2.2.

Fixes #61

benchmark_test.go

@@ -78,15 +78,10 @@ func BenchmarkE2EGocqlInsert(b *testing.B) {
 
 	b.ResetTimer()
 	for i := 0; i < b.N; i++ {
-		// prepare
 		p := people[i%len(people)]
 		if err := q.Bind(p.ID, p.FirstName, p.LastName, p.Email, p.Gender, p.IPAddress).Exec(); err != nil {
 			b.Fatal(err)
 		}
-		// insert
-		if err := q.Exec(); err != nil {
-			b.Fatal(err)
-		}
 	}
 }
 
@@ -105,7 +100,6 @@ func BenchmarkE2EGocqlxInsert(b *testing.B) {
 	defer q.Release()
 
 	b.ResetTimer()
-
 	for i := 0; i < b.N; i++ {
 		p := people[i%len(people)]
 		if err := q.BindStruct(p).Exec(); err != nil {
@@ -157,10 +151,11 @@ func BenchmarkE2EGocqlxGet(b *testing.B) {
 	b.ResetTimer()
 	for i := 0; i < b.N; i++ {
 		// prepare
-		q := session.Query(stmt)
-		q.Bind(people[i%len(people)].ID)
-		// get
-		gocqlx.Get(&p, q)
+		q := session.Query(stmt).Bind(people[i%len(people)].ID)
+		// get and release
+		if err := gocqlx.Query(q, nil).GetRelease(&p); err != nil {
+			b.Fatal(err)
+		}
 	}
 }
 
@@ -213,8 +208,8 @@ func BenchmarkE2EGocqlxSelect(b *testing.B) {
 		// prepare
 		q := session.Query(stmt)
 		var v []*benchPerson
-		// select
-		if err := gocqlx.Select(&v, q); err != nil {
+		// select and release
+		if err := gocqlx.Query(q, nil).SelectRelease(&v); err != nil {
 			b.Fatal(err)
 		}
 	}