diff --git a/core/breaker/googlebreaker.go b/core/breaker/googlebreaker.go
index 48795b8e..5da1471f 100644
--- a/core/breaker/googlebreaker.go
+++ b/core/breaker/googlebreaker.go
@@ -94,7 +94,7 @@ func (b *googleBreaker) markFailure() {
 	b.stat.Add(0)
 }
 
-func (b *googleBreaker) history() (accepts int64, total int64) {
+func (b *googleBreaker) history() (accepts, total int64) {
 	b.stat.Reduce(func(b *collection.Bucket) {
 		accepts += int64(b.Sum)
 		total += b.Count
diff --git a/core/collection/timingwheel.go b/core/collection/timingwheel.go
index eb736cd5..07189e03 100644
--- a/core/collection/timingwheel.go
+++ b/core/collection/timingwheel.go
@@ -151,7 +151,7 @@ func (tw *TimingWheel) drainAll(fn func(key, value interface{})) {
 	}
 }
 
-func (tw *TimingWheel) getPositionAndCircle(d time.Duration) (pos int, circle int) {
+func (tw *TimingWheel) getPositionAndCircle(d time.Duration) (pos, circle int) {
 	steps := int(d / tw.interval)
 	pos = (tw.tickedPos + steps) % tw.numSlots
 	circle = (steps - 1) / tw.numSlots
diff --git a/core/discov/internal/listener.go b/core/discov/internal/listener.go
index 3087410f..3893ea37 100644
--- a/core/discov/internal/listener.go
+++ b/core/discov/internal/listener.go
@@ -2,5 +2,5 @@ package internal
 
 // Listener interface wraps the OnUpdate method.
 type Listener interface {
-	OnUpdate(keys []string, values []string, newKey string)
+	OnUpdate(keys, values []string, newKey string)
 }
diff --git a/core/hash/consistenthash.go b/core/hash/consistenthash.go
index 911b46c1..13f386b1 100644
--- a/core/hash/consistenthash.go
+++ b/core/hash/consistenthash.go
@@ -83,7 +83,7 @@ func (h *ConsistentHash) AddWithReplicas(node interface{}, replicas int) {
 		h.ring[hash] = append(h.ring[hash], node)
 	}
 
-	sort.Slice(h.keys, func(i int, j int) bool {
+	sort.Slice(h.keys, func(i, j int) bool {
 		return h.keys[i] < h.keys[j]
 	})
 }
diff --git a/core/logx/tracelogger_test.go b/core/logx/tracelogger_test.go
index 68735a12..da7be2e7 100644
--- a/core/logx/tracelogger_test.go
+++ b/core/logx/tracelogger_test.go
@@ -112,5 +112,5 @@ func (t mockTrace) Follow(ctx context.Context, serviceName, operationName string
 	return nil, nil
 }
 
-func (t mockTrace) Visit(fn func(key string, val string) bool) {
+func (t mockTrace) Visit(fn func(key, val string) bool) {
 }
diff --git a/core/mapping/utils.go b/core/mapping/utils.go
index 67f59eff..e8ff102e 100644
--- a/core/mapping/utils.go
+++ b/core/mapping/utils.go
@@ -286,7 +286,7 @@ func parseNumberRange(str string) (*numberRange, error) {
 	}, nil
 }
 
-func parseOption(fieldOpts *fieldOptions, fieldName string, option string) error {
+func parseOption(fieldOpts *fieldOptions, fieldName, option string) error {
 	switch {
 	case option == stringOption:
 		fieldOpts.FromString = true
diff --git a/core/stores/cache/cachenode.go b/core/stores/cache/cachenode.go
index 779f7c3e..2405e3ff 100644
--- a/core/stores/cache/cachenode.go
+++ b/core/stores/cache/cachenode.go
@@ -205,7 +205,7 @@ func (c cacheNode) doTake(v interface{}, key string, query func(v interface{}) e
 	return jsonx.Unmarshal(val.([]byte), v)
 }
 
-func (c cacheNode) processCache(key string, data string, v interface{}) error {
+func (c cacheNode) processCache(key, data string, v interface{}) error {
 	err := jsonx.Unmarshal([]byte(data), v)
 	if err == nil {
 		return nil
diff --git a/core/stores/kv/store.go b/core/stores/kv/store.go
index b022042f..aa0a499a 100644
--- a/core/stores/kv/store.go
+++ b/core/stores/kv/store.go
@@ -17,7 +17,7 @@ type (
 	// Store interface represents a KV store.
 	Store interface {
 		Del(keys ...string) (int, error)
-		Eval(script string, key string, args ...interface{}) (interface{}, error)
+		Eval(script, key string, args ...interface{}) (interface{}, error)
 		Exists(key string) (bool, error)
 		Expire(key string, seconds int) error
 		Expireat(key string, expireTime int64) error
@@ -39,7 +39,7 @@ type (
 		Llen(key string) (int, error)
 		Lpop(key string) (string, error)
 		Lpush(key string, values ...interface{}) (int, error)
-		Lrange(key string, start int, stop int) ([]string, error)
+		Lrange(key string, start, stop int) ([]string, error)
 		Lrem(key string, count int, value string) (int, error)
 		Persist(key string) (bool, error)
 		Pfadd(key string, values ...interface{}) (bool, error)
@@ -47,7 +47,7 @@ type (
 		Rpush(key string, values ...interface{}) (int, error)
 		Sadd(key string, values ...interface{}) (int, error)
 		Scard(key string) (int64, error)
-		Set(key string, value string) error
+		Set(key, value string) error
 		Setex(key, value string, seconds int) error
 		Setnx(key, value string) (bool, error)
 		SetnxEx(key, value string, seconds int) (bool, error)
@@ -74,7 +74,7 @@ type (
 		Zrevrange(key string, start, stop int64) ([]string, error)
 		ZrevrangebyscoreWithScores(key string, start, stop int64) ([]redis.Pair, error)
 		ZrevrangebyscoreWithScoresAndLimit(key string, start, stop int64, page, size int) ([]redis.Pair, error)
-		Zscore(key string, value string) (int64, error)
+		Zscore(key, value string) (int64, error)
 		Zrevrank(key, field string) (int64, error)
 	}
 
@@ -123,7 +123,7 @@ func (cs clusterStore) Del(keys ...string) (int, error) {
 	return val, be.Err()
 }
 
-func (cs clusterStore) Eval(script string, key string, args ...interface{}) (interface{}, error) {
+func (cs clusterStore) Eval(script, key string, args ...interface{}) (interface{}, error) {
 	node, err := cs.getRedis(key)
 	if err != nil {
 		return nil, err
@@ -321,7 +321,7 @@ func (cs clusterStore) Lpush(key string, values ...interface{}) (int, error) {
 	return node.Lpush(key, values...)
 }
 
-func (cs clusterStore) Lrange(key string, start int, stop int) ([]string, error) {
+func (cs clusterStore) Lrange(key string, start, stop int) ([]string, error) {
 	node, err := cs.getRedis(key)
 	if err != nil {
 		return nil, err
@@ -393,7 +393,7 @@ func (cs clusterStore) Scard(key string) (int64, error) {
 	return node.Scard(key)
 }
 
-func (cs clusterStore) Set(key string, value string) error {
+func (cs clusterStore) Set(key, value string) error {
 	node, err := cs.getRedis(key)
 	if err != nil {
 		return err
@@ -648,7 +648,7 @@ func (cs clusterStore) Zrevrank(key, field string) (int64, error) {
 	return node.Zrevrank(key, field)
 }
 
-func (cs clusterStore) Zscore(key string, value string) (int64, error) {
+func (cs clusterStore) Zscore(key, value string) (int64, error) {
 	node, err := cs.getRedis(key)
 	if err != nil {
 		return 0, err
diff --git a/core/stores/mongoc/cachedcollection.go b/core/stores/mongoc/cachedcollection.go
index 2be85e8f..dc14fe68 100644
--- a/core/stores/mongoc/cachedcollection.go
+++ b/core/stores/mongoc/cachedcollection.go
@@ -24,11 +24,11 @@ type (
 	CachedCollection interface {
 		Count(query interface{}) (int, error)
 		DelCache(keys ...string) error
-		FindAllNoCache(v interface{}, query interface{}, opts ...QueryOption) error
+		FindAllNoCache(v, query interface{}, opts ...QueryOption) error
 		FindOne(v interface{}, key string, query interface{}) error
-		FindOneNoCache(v interface{}, query interface{}) error
+		FindOneNoCache(v, query interface{}) error
 		FindOneId(v interface{}, key string, id interface{}) error
-		FindOneIdNoCache(v interface{}, id interface{}) error
+		FindOneIdNoCache(v, id interface{}) error
 		GetCache(key string, v interface{}) error
 		Insert(docs ...interface{}) error
 		Pipe(pipeline interface{}) mongo.Pipe
@@ -68,7 +68,7 @@ func (c *cachedCollection) DelCache(keys ...string) error {
 	return c.cache.Del(keys...)
 }
 
-func (c *cachedCollection) FindAllNoCache(v interface{}, query interface{}, opts ...QueryOption) error {
+func (c *cachedCollection) FindAllNoCache(v, query interface{}, opts ...QueryOption) error {
 	q := c.collection.Find(query)
 	for _, opt := range opts {
 		q = opt(q)
@@ -83,7 +83,7 @@ func (c *cachedCollection) FindOne(v interface{}, key string, query interface{})
 	})
 }
 
-func (c *cachedCollection) FindOneNoCache(v interface{}, query interface{}) error {
+func (c *cachedCollection) FindOneNoCache(v, query interface{}) error {
 	q := c.collection.Find(query)
 	return q.One(v)
 }
@@ -95,7 +95,7 @@ func (c *cachedCollection) FindOneId(v interface{}, key string, id interface{})
 	})
 }
 
-func (c *cachedCollection) FindOneIdNoCache(v interface{}, id interface{}) error {
+func (c *cachedCollection) FindOneIdNoCache(v, id interface{}) error {
 	q := c.collection.FindId(id)
 	return q.One(v)
 }
diff --git a/core/stores/mongoc/cachedmodel.go b/core/stores/mongoc/cachedmodel.go
index e5d59090..88142f06 100644
--- a/core/stores/mongoc/cachedmodel.go
+++ b/core/stores/mongoc/cachedmodel.go
@@ -75,7 +75,7 @@ func (mm *Model) GetCollection(session *mgo.Session) CachedCollection {
 }
 
 // FindAllNoCache finds all records without cache.
-func (mm *Model) FindAllNoCache(v interface{}, query interface{}, opts ...QueryOption) error {
+func (mm *Model) FindAllNoCache(v, query interface{}, opts ...QueryOption) error {
 	return mm.execute(func(c CachedCollection) error {
 		return c.FindAllNoCache(v, query, opts...)
 	})
@@ -89,7 +89,7 @@ func (mm *Model) FindOne(v interface{}, key string, query interface{}) error {
 }
 
 // FindOneNoCache unmarshals a record into v with query, without cache.
-func (mm *Model) FindOneNoCache(v interface{}, query interface{}) error {
+func (mm *Model) FindOneNoCache(v, query interface{}) error {
 	return mm.execute(func(c CachedCollection) error {
 		return c.FindOneNoCache(v, query)
 	})
@@ -103,7 +103,7 @@ func (mm *Model) FindOneId(v interface{}, key string, id interface{}) error {
 }
 
 // FindOneIdNoCache unmarshals a record into v with query, without cache.
-func (mm *Model) FindOneIdNoCache(v interface{}, id interface{}) error {
+func (mm *Model) FindOneIdNoCache(v, id interface{}) error {
 	return mm.execute(func(c CachedCollection) error {
 		return c.FindOneIdNoCache(v, id)
 	})
diff --git a/core/stores/redis/redis.go b/core/stores/redis/redis.go
index d60cd4cf..caf05a22 100644
--- a/core/stores/redis/redis.go
+++ b/core/stores/redis/redis.go
@@ -180,7 +180,7 @@ func (s *Redis) BitOpXor(destKey string, keys ...string) (val int64, err error)
 }
 
 // BitPos is redis bitpos command implementation.
-func (s *Redis) BitPos(key string, bit int64, start, end int64) (val int64, err error) {
+func (s *Redis) BitPos(key string, bit, start, end int64) (val int64, err error) {
 	err = s.brk.DoWithAcceptable(func() error {
 		conn, err := getRedis(s)
 		if err != nil {
@@ -346,7 +346,7 @@ func (s *Redis) GeoAdd(key string, geoLocation ...*GeoLocation) (val int64, err
 }
 
 // GeoDist is the implementation of redis geodist command.
-func (s *Redis) GeoDist(key string, member1, member2, unit string) (val float64, err error) {
+func (s *Redis) GeoDist(key, member1, member2, unit string) (val float64, err error) {
 	err = s.brk.DoWithAcceptable(func() error {
 		conn, err := getRedis(s)
 		if err != nil {
@@ -795,7 +795,7 @@ func (s *Redis) Lpush(key string, values ...interface{}) (val int, err error) {
 }
 
 // Lrange is the implementation of redis lrange command.
-func (s *Redis) Lrange(key string, start int, stop int) (val []string, err error) {
+func (s *Redis) Lrange(key string, start, stop int) (val []string, err error) {
 	err = s.brk.DoWithAcceptable(func() error {
 		conn, err := getRedis(s)
 		if err != nil {
@@ -1074,7 +1074,7 @@ func (s *Redis) ScriptLoad(script string) (string, error) {
 }
 
 // Set is the implementation of redis set command.
-func (s *Redis) Set(key string, value string) error {
+func (s *Redis) Set(key, value string) error {
 	return s.brk.DoWithAcceptable(func() error {
 		conn, err := getRedis(s)
 		if err != nil {
@@ -1412,7 +1412,7 @@ func (s *Redis) Zincrby(key string, increment int64, field string) (val int64, e
 }
 
 // Zscore is the implementation of redis zscore command.
-func (s *Redis) Zscore(key string, value string) (val int64, err error) {
+func (s *Redis) Zscore(key, value string) (val int64, err error) {
 	err = s.brk.DoWithAcceptable(func() error {
 		conn, err := getRedis(s)
 		if err != nil {
@@ -1684,7 +1684,7 @@ func (s *Redis) ZrevrangebyscoreWithScoresAndLimit(key string, start, stop int64
 }
 
 // Zrevrank is the implementation of redis zrevrank command.
-func (s *Redis) Zrevrank(key string, field string) (val int64, err error) {
+func (s *Redis) Zrevrank(key, field string) (val int64, err error) {
 	err = s.brk.DoWithAcceptable(func() error {
 		conn, err := getRedis(s)
 		if err != nil {
diff --git a/core/stringx/strings.go b/core/stringx/strings.go
index 0274b5b1..477fdd07 100644
--- a/core/stringx/strings.go
+++ b/core/stringx/strings.go
@@ -86,7 +86,7 @@ func Reverse(s string) string {
 }
 
 // Substr returns runes between start and stop [start, stop) regardless of the chars are ascii or utf8.
-func Substr(str string, start int, stop int) (string, error) {
+func Substr(str string, start, stop int) (string, error) {
 	rs := []rune(str)
 	length := len(rs)
 
diff --git a/rest/engine_test.go b/rest/engine_test.go
index eff1c12e..f5eac8f1 100644
--- a/rest/engine_test.go
+++ b/rest/engine_test.go
@@ -159,7 +159,7 @@ type mockedRouter struct{}
 func (m mockedRouter) ServeHTTP(writer http.ResponseWriter, request *http.Request) {
 }
 
-func (m mockedRouter) Handle(method string, path string, handler http.Handler) error {
+func (m mockedRouter) Handle(method, path string, handler http.Handler) error {
 	return errors.New("foo")
 }
 
diff --git a/rest/httpx/router.go b/rest/httpx/router.go
index dc58cadb..e4430bff 100644
--- a/rest/httpx/router.go
+++ b/rest/httpx/router.go
@@ -5,7 +5,7 @@ import "net/http"
 // Router interface represents a http router that handles http requests.
 type Router interface {
 	http.Handler
-	Handle(method string, path string, handler http.Handler) error
+	Handle(method, path string, handler http.Handler) error
 	SetNotFoundHandler(handler http.Handler)
 	SetNotAllowedHandler(handler http.Handler)
 }
diff --git a/tools/goctl/api/docgen/doc.go b/tools/goctl/api/docgen/doc.go
index dba54186..a479f27c 100644
--- a/tools/goctl/api/docgen/doc.go
+++ b/tools/goctl/api/docgen/doc.go
@@ -33,7 +33,7 @@ const (
 `
 )
 
-func genDoc(api *spec.ApiSpec, dir string, filename string) error {
+func genDoc(api *spec.ApiSpec, dir, filename string) error {
 	fp, _, err := util.MaybeCreateFile(dir, "", filename)
 	if err != nil {
 		return err
diff --git a/tools/goctl/api/parser/g4/ast/api.go b/tools/goctl/api/parser/g4/ast/api.go
index 45a12c3d..2b601d87 100644
--- a/tools/goctl/api/parser/g4/ast/api.go
+++ b/tools/goctl/api/parser/g4/ast/api.go
@@ -42,7 +42,7 @@ func (v *ApiVisitor) VisitApi(ctx *api.ApiContext) interface{} {
 	return &final
 }
 
-func (v *ApiVisitor) acceptService(root *Api, final *Api) {
+func (v *ApiVisitor) acceptService(root, final *Api) {
 	for _, service := range root.Service {
 		if _, ok := final.serviceM[service.ServiceApi.Name.Text()]; !ok && len(final.serviceM) > 0 {
 			v.panic(service.ServiceApi.Name, fmt.Sprintf("mutiple service declaration"))
@@ -104,7 +104,7 @@ func (v *ApiVisitor) duplicateServerItemCheck(service *Service) {
 	}
 }
 
-func (v *ApiVisitor) acceptType(root *Api, final *Api) {
+func (v *ApiVisitor) acceptType(root, final *Api) {
 	for _, tp := range root.Type {
 		if _, ok := final.typeM[tp.NameExpr().Text()]; ok {
 			v.panic(tp.NameExpr(), fmt.Sprintf("duplicate type '%s'", tp.NameExpr().Text()))
@@ -115,7 +115,7 @@ func (v *ApiVisitor) acceptType(root *Api, final *Api) {
 	}
 }
 
-func (v *ApiVisitor) acceptInfo(root *Api, final *Api) {
+func (v *ApiVisitor) acceptInfo(root, final *Api) {
 	if root.Info != nil {
 		infoM := map[string]PlaceHolder{}
 		if final.Info != nil {
@@ -133,7 +133,7 @@ func (v *ApiVisitor) acceptInfo(root *Api, final *Api) {
 	}
 }
 
-func (v *ApiVisitor) acceptImport(root *Api, final *Api) {
+func (v *ApiVisitor) acceptImport(root, final *Api) {
 	for _, imp := range root.Import {
 		if _, ok := final.importM[imp.Value.Text()]; ok {
 			v.panic(imp.Import, fmt.Sprintf("duplicate import '%s'", imp.Value.Text()))
@@ -144,7 +144,7 @@ func (v *ApiVisitor) acceptImport(root *Api, final *Api) {
 	}
 }
 
-func (v *ApiVisitor) acceptSyntax(root *Api, final *Api) {
+func (v *ApiVisitor) acceptSyntax(root, final *Api) {
 	if root.Syntax != nil {
 		if final.Syntax != nil {
 			v.panic(root.Syntax.Syntax, fmt.Sprintf("mutiple syntax declaration"))
diff --git a/tools/goctl/api/parser/g4/ast/apiparser.go b/tools/goctl/api/parser/g4/ast/apiparser.go
index 9835cae0..bdf5e91c 100644
--- a/tools/goctl/api/parser/g4/ast/apiparser.go
+++ b/tools/goctl/api/parser/g4/ast/apiparser.go
@@ -177,7 +177,7 @@ func (p *Parser) invoke(linePrefix, content string) (v *Api, err error) {
 	return
 }
 
-func (p *Parser) valid(mainApi *Api, nestedApi *Api) error {
+func (p *Parser) valid(mainApi, nestedApi *Api) error {
 	err := p.nestedApiCheck(mainApi, nestedApi)
 	if err != nil {
 		return err
@@ -237,7 +237,7 @@ func (p *Parser) valid(mainApi *Api, nestedApi *Api) error {
 	return nil
 }
 
-func (p *Parser) duplicateRouteCheck(nestedApi *Api, mainHandlerMap map[string]PlaceHolder, mainRouteMap map[string]PlaceHolder) error {
+func (p *Parser) duplicateRouteCheck(nestedApi *Api, mainHandlerMap, mainRouteMap map[string]PlaceHolder) error {
 	for _, each := range nestedApi.Service {
 		for _, r := range each.ServiceApi.ServiceRoute {
 			handler := r.GetHandler()
@@ -260,7 +260,7 @@ func (p *Parser) duplicateRouteCheck(nestedApi *Api, mainHandlerMap map[string]P
 	return nil
 }
 
-func (p *Parser) nestedApiCheck(mainApi *Api, nestedApi *Api) error {
+func (p *Parser) nestedApiCheck(mainApi, nestedApi *Api) error {
 	if len(nestedApi.Import) > 0 {
 		importToken := nestedApi.Import[0].Import
 		return fmt.Errorf("%s line %d:%d the nested api does not support import",
diff --git a/tools/goctl/model/sql/gen/keys_test.go b/tools/goctl/model/sql/gen/keys_test.go
index 8fd9e507..45682c57 100644
--- a/tools/goctl/model/sql/gen/keys_test.go
+++ b/tools/goctl/model/sql/gen/keys_test.go
@@ -136,7 +136,7 @@ func TestGenCacheKeys(t *testing.T) {
 	})
 }
 
-func cacheKeyEqual(k1 Key, k2 Key) bool {
+func cacheKeyEqual(k1, k2 Key) bool {
 	k1Join := k1.FieldNameJoin
 	k2Join := k2.FieldNameJoin
 	sort.Strings(k1Join)
diff --git a/tools/goctl/model/sql/test/model/studentmodel.go b/tools/goctl/model/sql/test/model/studentmodel.go
index 2acac963..cba62675 100755
--- a/tools/goctl/model/sql/test/model/studentmodel.go
+++ b/tools/goctl/model/sql/test/model/studentmodel.go
@@ -28,7 +28,7 @@ type (
 	StudentModel interface {
 		Insert(data Student) (sql.Result, error)
 		FindOne(id int64) (*Student, error)
-		FindOneByClassName(class string, name string) (*Student, error)
+		FindOneByClassName(class, name string) (*Student, error)
 		Update(data Student) error
 		// only for test
 		Delete(id int64, className, studentName string) error
@@ -85,7 +85,7 @@ func (m *defaultStudentModel) FindOne(id int64) (*Student, error) {
 	}
 }
 
-func (m *defaultStudentModel) FindOneByClassName(class string, name string) (*Student, error) {
+func (m *defaultStudentModel) FindOneByClassName(class, name string) (*Student, error) {
 	studentClassNameKey := fmt.Sprintf("%s%v%v", cacheStudentClassNamePrefix, class, name)
 	var resp Student
 	err := m.QueryRowIndex(&resp, studentClassNameKey, m.formatPrimary, func(conn sqlx.SqlConn, v interface{}) (i interface{}, e error) {
diff --git a/tools/goctl/plugin/plugin.go b/tools/goctl/plugin/plugin.go
index 9e47b082..3ab8783b 100644
--- a/tools/goctl/plugin/plugin.go
+++ b/tools/goctl/plugin/plugin.go
@@ -136,7 +136,7 @@ func getCommand(arg string) (string, bool, error) {
 	return arg, false, nil
 }
 
-func downloadFile(filepath string, url string) error {
+func downloadFile(filepath, url string) error {
 	resp, err := http.Get(url)
 	if err != nil {
 		return err
diff --git a/tools/goctl/rpc/execx/execx.go b/tools/goctl/rpc/execx/execx.go
index e7536935..2c674d2a 100644
--- a/tools/goctl/rpc/execx/execx.go
+++ b/tools/goctl/rpc/execx/execx.go
@@ -15,7 +15,7 @@ import (
 // Run provides the execution of shell scripts in golang,
 // which can support macOS, Windows, and Linux operating systems.
 // Other operating systems are currently not supported
-func Run(arg string, dir string, in ...*bytes.Buffer) (string, error) {
+func Run(arg, dir string, in ...*bytes.Buffer) (string, error) {
 	goos := runtime.GOOS
 	var cmd *exec.Cmd
 	switch goos {