diff --git a/contrib/go-redis/redis.v8/redis.go b/contrib/go-redis/redis.v8/redis.go
index 497e78bd61..afa9728e20 100644
--- a/contrib/go-redis/redis.v8/redis.go
+++ b/contrib/go-redis/redis.v8/redis.go
@@ -100,16 +100,16 @@ func additionalTagOptions(client redis.UniversalClient) []ddtrace.StartSpanOptio
 
 func (ddh *datadogHook) BeforeProcess(ctx context.Context, cmd redis.Cmder) (context.Context, error) {
 	raw := cmd.String()
-	parts := strings.Split(raw, " ")
-	length := len(parts) - 1
+	length := strings.Count(raw, " ")
 	p := ddh.params
-	opts := []ddtrace.StartSpanOption{
+	opts := make([]ddtrace.StartSpanOption, 0, 5+len(ddh.additionalTags)+1) // 5 options below + for additionalTags + for analyticsRate
+	opts = append(opts,
 		tracer.SpanType(ext.SpanTypeRedis),
 		tracer.ServiceName(p.config.serviceName),
-		tracer.ResourceName(parts[0]),
+		tracer.ResourceName(raw[:strings.IndexByte(raw, ' ')]),
 		tracer.Tag("redis.raw_command", raw),
 		tracer.Tag("redis.args_length", strconv.Itoa(length)),
-	}
+	)
 	opts = append(opts, ddh.additionalTags...)
 	if !math.IsNaN(p.config.analyticsRate) {
 		opts = append(opts, tracer.Tag(ext.EventSampleRate, p.config.analyticsRate))
@@ -132,18 +132,18 @@ func (ddh *datadogHook) AfterProcess(ctx context.Context, cmd redis.Cmder) error
 
 func (ddh *datadogHook) BeforeProcessPipeline(ctx context.Context, cmds []redis.Cmder) (context.Context, error) {
 	raw := commandsToString(cmds)
-	parts := strings.Split(raw, " ")
-	length := len(parts) - 1
+	length := strings.Count(raw, " ")
 	p := ddh.params
-	opts := []ddtrace.StartSpanOption{
+	opts := make([]ddtrace.StartSpanOption, 0, 7+len(ddh.additionalTags)+1) // 7 options below + for additionalTags + for analyticsRate
+	opts = append(opts,
 		tracer.SpanType(ext.SpanTypeRedis),
 		tracer.ServiceName(p.config.serviceName),
-		tracer.ResourceName(parts[0]),
+		tracer.ResourceName(raw[:strings.IndexByte(raw, ' ')]),
 		tracer.Tag("redis.raw_command", raw),
 		tracer.Tag("redis.args_length", strconv.Itoa(length)),
 		tracer.Tag(ext.ResourceName, raw),
 		tracer.Tag("redis.pipeline_length", strconv.Itoa(len(cmds))),
-	}
+	)
 	opts = append(opts, ddh.additionalTags...)
 	if !math.IsNaN(p.config.analyticsRate) {
 		opts = append(opts, tracer.Tag(ext.EventSampleRate, p.config.analyticsRate))