diff --git a/client/utils/servicepusher.go b/client/utils/servicepusher.go
index e78de05ad..5bcbc67f8 100644
--- a/client/utils/servicepusher.go
+++ b/client/utils/servicepusher.go
@@ -5,19 +5,18 @@ import (
 	"errors"
 	"os"
 	"strings"
-	"sync"
 	"time"
 
-	"github.com/projecteru2/core/log"
-
+	"github.com/cornelk/hashmap"
 	"github.com/go-ping/ping"
+	"github.com/projecteru2/core/log"
 )
 
 // EndpointPusher pushes endpoints to registered channels if the ep is L3 reachable
 type EndpointPusher struct {
 	chans              []chan []string
-	pendingEndpoints   sync.Map
-	availableEndpoints sync.Map
+	pendingEndpoints   hashmap.HashMap
+	availableEndpoints hashmap.HashMap
 }
 
 // NewEndpointPusher .
@@ -37,54 +36,52 @@ func (p *EndpointPusher) Push(endpoints []string) {
 }
 
 func (p *EndpointPusher) delOutdated(endpoints []string) {
-	newEps := make(map[string]struct{})
-	for _, e := range endpoints {
-		newEps[e] = struct{}{}
+	newEndpoints := make(map[string]struct{}) // TODO after go 1.18, use slice package to search endpoints
+	for _, endpoint := range endpoints {
+		newEndpoints[endpoint] = struct{}{}
 	}
 
-	p.pendingEndpoints.Range(func(key, value interface{}) bool {
-		ep, ok := key.(string)
+	for kv := range p.pendingEndpoints.Iter() {
+		endpoint, ok := kv.Key.(string)
 		if !ok {
 			log.Error("[EruResolver] failed to cast key while ranging pendingEndpoints")
-			return true
+			continue
 		}
-		cancel, ok := value.(context.CancelFunc)
+		cancel, ok := kv.Value.(context.CancelFunc)
 		if !ok {
 			log.Error("[EruResolver] failed to cast value while ranging pendingEndpoints")
 		}
-		if _, ok := newEps[ep]; !ok {
+		if _, ok := newEndpoints[endpoint]; !ok {
 			cancel()
-			p.pendingEndpoints.Delete(ep)
-			log.Debugf(nil, "[EruResolver] pending endpoint deleted: %s", ep) //nolint
+			p.pendingEndpoints.Del(endpoint)
+			log.Debugf(nil, "[EruResolver] pending endpoint deleted: %s", endpoint) //nolint
 		}
-		return true
-	})
+	}
 
-	p.availableEndpoints.Range(func(key, _ interface{}) bool {
-		ep, ok := key.(string)
+	for kv := range p.availableEndpoints.Iter() {
+		endpoint, ok := kv.Key.(string)
 		if !ok {
 			log.Error("[EruResolver] failed to cast key while ranging availableEndpoints")
-			return true
+			continue
 		}
-		if _, ok := newEps[ep]; !ok {
-			p.availableEndpoints.Delete(ep)
-			log.Debugf(nil, "[EruResolver] available endpoint deleted: %s", ep) //nolint
+		if _, ok := newEndpoints[endpoint]; !ok {
+			p.availableEndpoints.Del(endpoint)
+			log.Debugf(nil, "[EruResolver] available endpoint deleted: %s", endpoint) //nolint
 		}
-		return true
-	})
+	}
 }
 
 func (p *EndpointPusher) addCheck(endpoints []string) {
 	for _, endpoint := range endpoints {
-		if _, ok := p.pendingEndpoints.Load(endpoint); ok {
+		if _, ok := p.pendingEndpoints.GetStringKey(endpoint); ok {
 			continue
 		}
-		if _, ok := p.availableEndpoints.Load(endpoint); ok {
+		if _, ok := p.availableEndpoints.GetStringKey(endpoint); ok {
 			continue
 		}
 
 		ctx, cancel := context.WithCancel(context.TODO())
-		p.pendingEndpoints.Store(endpoint, cancel)
+		p.pendingEndpoints.Set(endpoint, cancel)
 		go p.pollReachability(ctx, endpoint)
 		log.Debugf(ctx, "[EruResolver] pending endpoint added: %s", endpoint)
 	}
@@ -97,24 +94,23 @@ func (p *EndpointPusher) pollReachability(ctx context.Context, endpoint string)
 		return
 	}
 
+	ticker := time.NewTicker(time.Second) // TODO config from outside?
+	defer ticker.Stop()
 	for {
 		select {
 		case <-ctx.Done():
 			log.Debugf(ctx, "[EruResolver] reachability goroutine ends: %s", endpoint)
 			return
-		default:
-		}
-
-		time.Sleep(time.Second)
-		if err := p.checkReachability(parts[0]); err != nil {
-			continue
+		case <-ticker.C:
+			if err := p.checkReachability(parts[0]); err != nil {
+				continue
+			}
+			p.pendingEndpoints.Del(endpoint)
+			p.availableEndpoints.Set(endpoint, struct{}{})
+			p.pushEndpoints()
+			log.Debugf(ctx, "[EruResolver] available endpoint added: %s", endpoint)
+			return
 		}
-
-		p.pendingEndpoints.Delete(endpoint)
-		p.availableEndpoints.Store(endpoint, struct{}{})
-		p.pushEndpoints()
-		log.Debugf(ctx, "[EruResolver] available endpoint added: %s", endpoint)
-		return
 	}
 }
 
@@ -140,15 +136,14 @@ func (p *EndpointPusher) checkReachability(host string) (err error) {
 
 func (p *EndpointPusher) pushEndpoints() {
 	endpoints := []string{}
-	p.availableEndpoints.Range(func(key, value interface{}) bool {
-		endpoint, ok := key.(string)
+	for kv := range p.availableEndpoints.Iter() {
+		endpoint, ok := kv.Key.(string)
 		if !ok {
 			log.Error("[EruResolver] failed to cast key while ranging availableEndpoints")
-			return true
+			continue
 		}
 		endpoints = append(endpoints, endpoint)
-		return true
-	})
+	}
 	for _, ch := range p.chans {
 		ch <- endpoints
 	}
diff --git a/cluster/calcium/create.go b/cluster/calcium/create.go
index 66c1afa4a..71a78d703 100644
--- a/cluster/calcium/create.go
+++ b/cluster/calcium/create.go
@@ -7,6 +7,7 @@ import (
 	"sync"
 	"time"
 
+	"github.com/cornelk/hashmap"
 	"github.com/projecteru2/core/cluster"
 	enginetypes "github.com/projecteru2/core/engine/types"
 	"github.com/projecteru2/core/log"
@@ -158,7 +159,7 @@ func (c *Calcium) doCreateWorkloads(ctx context.Context, opts *types.DeployOptio
 func (c *Calcium) doDeployWorkloads(ctx context.Context, ch chan *types.CreateWorkloadMessage, opts *types.DeployOptions, plans []resourcetypes.ResourcePlans, deployMap map[string]int) (_ map[string][]int, err error) {
 	wg := sync.WaitGroup{}
 	wg.Add(len(deployMap))
-	syncRollbackMap := sync.Map{}
+	syncRollbackMap := hashmap.HashMap{}
 
 	seq := 0
 	rollbackMap := make(map[string][]int)
@@ -172,7 +173,7 @@ func (c *Calcium) doDeployWorkloads(ctx context.Context, ch chan *types.CreateWo
 			return func() {
 				defer wg.Done()
 				if indices, err := c.doDeployWorkloadsOnNode(ctx, ch, nodename, opts, deploy, plans, seq); err != nil {
-					syncRollbackMap.Store(nodename, indices)
+					syncRollbackMap.Set(nodename, indices)
 				}
 			}
 		}(nodename, deploy, seq))
@@ -181,12 +182,11 @@ func (c *Calcium) doDeployWorkloads(ctx context.Context, ch chan *types.CreateWo
 	}
 
 	wg.Wait()
-	syncRollbackMap.Range(func(key, value interface{}) bool {
-		nodename := key.(string)
-		indices := value.([]int)
+	for kv := range syncRollbackMap.Iter() {
+		nodename := kv.Key.(string)
+		indices := kv.Value.([]int)
 		rollbackMap[nodename] = indices
-		return true
-	})
+	}
 	log.Debugf(ctx, "[Calcium.doDeployWorkloads] rollbackMap: %+v", rollbackMap)
 	if len(rollbackMap) != 0 {
 		err = types.ErrRollbackMapIsNotEmpty
diff --git a/go.mod b/go.mod
index 5ab2affc5..89dd14002 100644
--- a/go.mod
+++ b/go.mod
@@ -10,6 +10,7 @@ require (
 	github.com/cenkalti/backoff/v4 v4.0.2
 	github.com/containerd/containerd v1.4.13 // indirect
 	github.com/containerd/continuity v0.0.0-20200710164510-efbc4488d8fe // indirect
+	github.com/cornelk/hashmap v1.0.2-0.20210201213917-c93d96ce6b8a
 	github.com/docker/distribution v2.8.0+incompatible
 	github.com/docker/docker v20.10.0+incompatible
 	github.com/docker/go-connections v0.4.0
diff --git a/go.sum b/go.sum
index 7a1a3dfbc..d39f3d331 100644
--- a/go.sum
+++ b/go.sum
@@ -107,6 +107,8 @@ github.com/coreos/go-systemd/v22 v22.0.0/go.mod h1:xO0FLkIi5MaZafQlIrOotqXZ90ih+
 github.com/coreos/go-systemd/v22 v22.3.2 h1:D9/bQk5vlXQFZ6Kwuu6zaiXJ9oTPe68++AzAJc1DzSI=
 github.com/coreos/go-systemd/v22 v22.3.2/go.mod h1:Y58oyj3AT4RCenI/lSvhwexgC+NSVTIJ3seZv2GcEnc=
 github.com/coreos/pkg v0.0.0-20180928190104-399ea9e2e55f/go.mod h1:E3G3o1h8I7cfcXa63jLwjI0eiQQMgzzUDFVpN/nH/eA=
+github.com/cornelk/hashmap v1.0.2-0.20210201213917-c93d96ce6b8a h1:qv8c3h9mYAfJP3xPuMlhm12taC8VI0Vq4a9mivqCZBc=
+github.com/cornelk/hashmap v1.0.2-0.20210201213917-c93d96ce6b8a/go.mod h1:SI48x/mQnWtjsJuM7GgmODo4o5O8FhGJgClCRmtOtIQ=
 github.com/cpuguy83/go-md2man v1.0.10 h1:BSKMNlYxDvnunlTymqtgONjNnaRV1sTpcovwwjF22jk=
 github.com/cpuguy83/go-md2man v1.0.10/go.mod h1:SmD6nW6nTyfqj6ABTjUi3V3JVMnlJmwcJI5acqYI6dE=
 github.com/cpuguy83/go-md2man/v2 v2.0.0-20190314233015-f79a8a8ca69d/go.mod h1:maD7wRr/U5Z6m/iR4s+kqSMx2CaBsrgA7czyZG/E6dU=
@@ -119,6 +121,8 @@ github.com/davecgh/go-spew v0.0.0-20161028175848-04cdfd42973b/go.mod h1:J7Y8YcW2
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/dchest/siphash v1.1.0 h1:1Rs9eTUlZLPBEvV+2sTaM8O0NWn0ppbgqS7p11aWawI=
+github.com/dchest/siphash v1.1.0/go.mod h1:q+IRvb2gOSrUnYoPqHiyHXS0FOBBOdl6tONBlVnOnt4=
 github.com/dgraph-io/badger v1.6.0/go.mod h1:zwt7syl517jmP8s94KqSxTlM6IMsdhYy6psNgSztDR4=
 github.com/dgrijalva/jwt-go v3.2.0+incompatible/go.mod h1:E3ru+11k8xSBh+hMPgOLZmtrrCbhqsmaPHjLKYnJCaQ=
 github.com/dgryski/go-farm v0.0.0-20190423205320-6a90982ecee2/go.mod h1:SqUrOPUnsFjfmXRMNPybcSiG0BgUW2AuFH8PAnS2iTw=