diff --git a/cmd/ns1_exporter/ns1_exporter.go b/cmd/ns1_exporter/ns1_exporter.go
index 144b8df..caac80e 100644
--- a/cmd/ns1_exporter/ns1_exporter.go
+++ b/cmd/ns1_exporter/ns1_exporter.go
@@ -51,8 +51,8 @@ const (
 
 var (
 	// pkg level logger
-	logger        = promlog.New(promlogConfig)
 	promlogConfig = &promlog.Config{}
+	logger        = promlog.New(promlogConfig)
 
 	// so. many. flags.
 	flagWebTelemetryPath = kingpin.Flag(
diff --git a/pkg/exporter/exporter.go b/pkg/exporter/exporter.go
index 26728e9..76c79e4 100644
--- a/pkg/exporter/exporter.go
+++ b/pkg/exporter/exporter.go
@@ -37,7 +37,6 @@ type Worker struct {
 	EnableRecordQPS bool
 
 	client *ns1_internal.Client
-	// add collector?
 	zoneCache map[string]*ns1_internal.Zone
 	qpsCache  []*ns1_internal.QPS
 }
diff --git a/pkg/metrics/metrics.go b/pkg/metrics/metrics.go
index 35edf8e..70a14f8 100644
--- a/pkg/metrics/metrics.go
+++ b/pkg/metrics/metrics.go
@@ -15,9 +15,10 @@
 package metrics
 
 import (
+	"sync"
+
 	"github.com/prometheus/client_golang/prometheus"
 	"github.com/prometheus/client_golang/prometheus/collectors"
-	"sync"
 )
 
 const (
diff --git a/pkg/servicediscovery/sd.go b/pkg/servicediscovery/sd.go
index 9215f33..47d21b4 100644
--- a/pkg/servicediscovery/sd.go
+++ b/pkg/servicediscovery/sd.go
@@ -58,8 +58,10 @@ type HTTPSDTarget struct {
 	Labels  promModel.LabelSet `json:"labels"`
 }
 
-// Worker is a struct containing configs needed to retrieve stats from NS1 API
-// to expose as prometheus metrics. It implements the prometheus.Collector interface
+// Worker contains an API client to interact with the NS1 api, as well as a
+// cache of DNS records and the Prometheus targets created from those records.
+// Worker gets registered on a different handler for the `/sd` path and run via
+// the same HTTP server as the metrics exporter.
 type Worker struct {
 	client *ns1_internal.Client
 
@@ -250,7 +252,6 @@ func (w *Worker) ServeHTTP(writer http.ResponseWriter, req *http.Request) {
 		return
 	}
 
-	// write results to json
 	writer.Header().Set("content-type", "application/json; charset=utf-8")
 	writer.WriteHeader(http.StatusOK)
 	if bytesWritten, err := writer.Write(buf); err != nil {