diff --git a/pkg/proxy/config/config.go b/pkg/proxy/config/config.go
index 2f073e8f06e6..35c8daa5a4ff 100644
--- a/pkg/proxy/config/config.go
+++ b/pkg/proxy/config/config.go
@@ -20,7 +20,7 @@ import (
 	"fmt"
 	"time"
 
-	"k8s.io/api/core/v1"
+	v1 "k8s.io/api/core/v1"
 	discovery "k8s.io/api/discovery/v1beta1"
 	utilruntime "k8s.io/apimachinery/pkg/util/runtime"
 	coreinformers "k8s.io/client-go/informers/core/v1"
@@ -381,7 +381,7 @@ type NodeHandler interface {
 	// OnNodeUpdate is called whenever modification of an existing
 	// node object is observed.
 	OnNodeUpdate(oldNode, node *v1.Node)
-	// OnNodeDelete is called whever deletion of an existing node
+	// OnNodeDelete is called whenever deletion of an existing node
 	// object is observed.
 	OnNodeDelete(node *v1.Node)
 	// OnNodeSynced is called once all the initial event handlers were
diff --git a/pkg/proxy/iptables/proxier.go b/pkg/proxy/iptables/proxier.go
index e223f0f9e8f9..a83ca3aa1d63 100644
--- a/pkg/proxy/iptables/proxier.go
+++ b/pkg/proxy/iptables/proxier.go
@@ -541,7 +541,7 @@ func (proxier *Proxier) OnServiceDelete(service *v1.Service) {
 
 }
 
-// OnServiceSynced is called once all the initial even handlers were
+// OnServiceSynced is called once all the initial event handlers were
 // called and the state is fully propagated to local cache.
 func (proxier *Proxier) OnServiceSynced() {
 	proxier.mu.Lock()
@@ -663,7 +663,7 @@ func (proxier *Proxier) OnNodeUpdate(oldNode, node *v1.Node) {
 	proxier.syncProxyRules()
 }
 
-// OnNodeDelete is called whever deletion of an existing node
+// OnNodeDelete is called whenever deletion of an existing node
 // object is observed.
 func (proxier *Proxier) OnNodeDelete(node *v1.Node) {
 	if node.Name != proxier.hostname {
diff --git a/pkg/proxy/ipvs/proxier.go b/pkg/proxy/ipvs/proxier.go
index 5b3eda42960a..d4f313984dc5 100644
--- a/pkg/proxy/ipvs/proxier.go
+++ b/pkg/proxy/ipvs/proxier.go
@@ -963,7 +963,7 @@ func (proxier *Proxier) OnNodeUpdate(oldNode, node *v1.Node) {
 	proxier.syncProxyRules()
 }
 
-// OnNodeDelete is called whever deletion of an existing node
+// OnNodeDelete is called whenever deletion of an existing node
 // object is observed.
 func (proxier *Proxier) OnNodeDelete(node *v1.Node) {
 	if node.Name != proxier.hostname {
diff --git a/pkg/proxy/userspace/proxier.go b/pkg/proxy/userspace/proxier.go
index 49bd24f705de..142c0e4b52be 100644
--- a/pkg/proxy/userspace/proxier.go
+++ b/pkg/proxy/userspace/proxier.go
@@ -621,18 +621,26 @@ func (proxier *Proxier) serviceChange(previous, current *v1.Service, detail stri
 	}
 }
 
+// OnServiceAdd is called whenever creation of new service object
+// is observed.
 func (proxier *Proxier) OnServiceAdd(service *v1.Service) {
 	proxier.serviceChange(nil, service, "OnServiceAdd")
 }
 
+// OnServiceUpdate is called whenever modification of an existing
+// service object is observed.
 func (proxier *Proxier) OnServiceUpdate(oldService, service *v1.Service) {
 	proxier.serviceChange(oldService, service, "OnServiceUpdate")
 }
 
+// OnServiceDelete is called whenever deletion of an existing service
+// object is observed.
 func (proxier *Proxier) OnServiceDelete(service *v1.Service) {
 	proxier.serviceChange(service, nil, "OnServiceDelete")
 }
 
+// OnServiceSynced is called once all the initial event handlers were
+// called and the state is fully propagated to local cache.
 func (proxier *Proxier) OnServiceSynced() {
 	klog.V(2).Infof("userspace OnServiceSynced")
 
@@ -649,18 +657,26 @@ func (proxier *Proxier) OnServiceSynced() {
 	go proxier.syncProxyRules()
 }
 
+// OnEndpointsAdd is called whenever creation of new endpoints object
+// is observed.
 func (proxier *Proxier) OnEndpointsAdd(endpoints *v1.Endpoints) {
 	proxier.loadBalancer.OnEndpointsAdd(endpoints)
 }
 
+// OnEndpointsUpdate is called whenever modification of an existing
+// endpoints object is observed.
 func (proxier *Proxier) OnEndpointsUpdate(oldEndpoints, endpoints *v1.Endpoints) {
 	proxier.loadBalancer.OnEndpointsUpdate(oldEndpoints, endpoints)
 }
 
+// OnEndpointsDelete is called whenever deletion of an existing endpoints
+// object is observed.
 func (proxier *Proxier) OnEndpointsDelete(endpoints *v1.Endpoints) {
 	proxier.loadBalancer.OnEndpointsDelete(endpoints)
 }
 
+// OnEndpointsSynced is called once all the initial event handlers were
+// called and the state is fully propagated to local cache.
 func (proxier *Proxier) OnEndpointsSynced() {
 	klog.V(2).Infof("userspace OnEndpointsSynced")
 	proxier.loadBalancer.OnEndpointsSynced()
diff --git a/pkg/proxy/winkernel/proxier.go b/pkg/proxy/winkernel/proxier.go
index 51c203b54ab8..3d742f436461 100644
--- a/pkg/proxy/winkernel/proxier.go
+++ b/pkg/proxy/winkernel/proxier.go
@@ -761,6 +761,8 @@ func (proxier *Proxier) isInitialized() bool {
 	return atomic.LoadInt32(&proxier.initialized) > 0
 }
 
+// OnServiceAdd is called whenever creation of new service object
+// is observed.
 func (proxier *Proxier) OnServiceAdd(service *v1.Service) {
 	namespacedName := types.NamespacedName{Namespace: service.Namespace, Name: service.Name}
 	if proxier.serviceChanges.update(&namespacedName, nil, service, proxier.hns) && proxier.isInitialized() {
@@ -768,6 +770,8 @@ func (proxier *Proxier) OnServiceAdd(service *v1.Service) {
 	}
 }
 
+// OnServiceUpdate is called whenever modification of an existing
+// service object is observed.
 func (proxier *Proxier) OnServiceUpdate(oldService, service *v1.Service) {
 	namespacedName := types.NamespacedName{Namespace: service.Namespace, Name: service.Name}
 	if proxier.serviceChanges.update(&namespacedName, oldService, service, proxier.hns) && proxier.isInitialized() {
@@ -775,6 +779,8 @@ func (proxier *Proxier) OnServiceUpdate(oldService, service *v1.Service) {
 	}
 }
 
+// OnServiceDelete is called whenever deletion of an existing service
+// object is observed.
 func (proxier *Proxier) OnServiceDelete(service *v1.Service) {
 	namespacedName := types.NamespacedName{Namespace: service.Namespace, Name: service.Name}
 	if proxier.serviceChanges.update(&namespacedName, service, nil, proxier.hns) && proxier.isInitialized() {
@@ -782,6 +788,8 @@ func (proxier *Proxier) OnServiceDelete(service *v1.Service) {
 	}
 }
 
+// OnServiceSynced is called once all the initial event handlers were
+// called and the state is fully propagated to local cache.
 func (proxier *Proxier) OnServiceSynced() {
 	proxier.mu.Lock()
 	proxier.servicesSynced = true
@@ -836,6 +844,8 @@ func (proxier *Proxier) updateServiceMap() (result updateServiceMapResult) {
 	return result
 }
 
+// OnEndpointsAdd is called whenever creation of new endpoints object
+// is observed.
 func (proxier *Proxier) OnEndpointsAdd(endpoints *v1.Endpoints) {
 	namespacedName := types.NamespacedName{Namespace: endpoints.Namespace, Name: endpoints.Name}
 	if proxier.endpointsChanges.update(&namespacedName, nil, endpoints, proxier.hns) && proxier.isInitialized() {
@@ -843,6 +853,8 @@ func (proxier *Proxier) OnEndpointsAdd(endpoints *v1.Endpoints) {
 	}
 }
 
+// OnEndpointsUpdate is called whenever modification of an existing
+// endpoints object is observed.
 func (proxier *Proxier) OnEndpointsUpdate(oldEndpoints, endpoints *v1.Endpoints) {
 	namespacedName := types.NamespacedName{Namespace: endpoints.Namespace, Name: endpoints.Name}
 	if proxier.endpointsChanges.update(&namespacedName, oldEndpoints, endpoints, proxier.hns) && proxier.isInitialized() {
@@ -850,6 +862,8 @@ func (proxier *Proxier) OnEndpointsUpdate(oldEndpoints, endpoints *v1.Endpoints)
 	}
 }
 
+// OnEndpointsDelete is called whenever deletion of an existing endpoints
+// object is observed.
 func (proxier *Proxier) OnEndpointsDelete(endpoints *v1.Endpoints) {
 	namespacedName := types.NamespacedName{Namespace: endpoints.Namespace, Name: endpoints.Name}
 	if proxier.endpointsChanges.update(&namespacedName, endpoints, nil, proxier.hns) && proxier.isInitialized() {
@@ -857,6 +871,8 @@ func (proxier *Proxier) OnEndpointsDelete(endpoints *v1.Endpoints) {
 	}
 }
 
+// OnEndpointsSynced is called once all the initial event handlers were
+// called and the state is fully propagated to local cache.
 func (proxier *Proxier) OnEndpointsSynced() {
 	proxier.mu.Lock()
 	proxier.endpointsSynced = true
diff --git a/pkg/proxy/winuserspace/proxier.go b/pkg/proxy/winuserspace/proxier.go
index b3fc33d5f651..bfeb4fdee2c0 100644
--- a/pkg/proxy/winuserspace/proxier.go
+++ b/pkg/proxy/winuserspace/proxier.go
@@ -411,34 +411,50 @@ func (proxier *Proxier) unmergeService(service *v1.Service, existingPortPortals
 	}
 }
 
+// OnServiceAdd is called whenever creation of new service object
+// is observed.
 func (proxier *Proxier) OnServiceAdd(service *v1.Service) {
 	_ = proxier.mergeService(service)
 }
 
+// OnServiceUpdate is called whenever modification of an existing
+// service object is observed.
 func (proxier *Proxier) OnServiceUpdate(oldService, service *v1.Service) {
 	existingPortPortals := proxier.mergeService(service)
 	proxier.unmergeService(oldService, existingPortPortals)
 }
 
+// OnServiceDelete is called whenever deletion of an existing service
+// object is observed.
 func (proxier *Proxier) OnServiceDelete(service *v1.Service) {
 	proxier.unmergeService(service, map[ServicePortPortalName]bool{})
 }
 
+// OnServiceSynced is called once all the initial event handlers were
+// called and the state is fully propagated to local cache.
 func (proxier *Proxier) OnServiceSynced() {
 }
 
+// OnEndpointsAdd is called whenever creation of new endpoints object
+// is observed.
 func (proxier *Proxier) OnEndpointsAdd(endpoints *v1.Endpoints) {
 	proxier.loadBalancer.OnEndpointsAdd(endpoints)
 }
 
+// OnEndpointsUpdate is called whenever modification of an existing
+// endpoints object is observed.
 func (proxier *Proxier) OnEndpointsUpdate(oldEndpoints, endpoints *v1.Endpoints) {
 	proxier.loadBalancer.OnEndpointsUpdate(oldEndpoints, endpoints)
 }
 
+// OnEndpointsDelete is called whenever deletion of an existing endpoints
+// object is observed.
 func (proxier *Proxier) OnEndpointsDelete(endpoints *v1.Endpoints) {
 	proxier.loadBalancer.OnEndpointsDelete(endpoints)
 }
 
+// OnEndpointsSynced is called once all the initial event handlers were
+// called and the state is fully propagated to local cache.
 func (proxier *Proxier) OnEndpointsSynced() {
 	proxier.loadBalancer.OnEndpointsSynced()
 }