diff --git a/.golangci.yml b/.golangci.yml
index 496809d..a74f56c 100644
--- a/.golangci.yml
+++ b/.golangci.yml
@@ -9,18 +9,25 @@ linters-settings:
       min-occurrences: 2
     gocyclo:
       min-complexity: 15
-    golint:
-      min-confidence: 0
     govet:
       check-shadowing: true
     lll:
       line-length: 140
-    maligned:
+    fieldalignment:
       suggest-new: true
     misspell:
       locale: US  
     exhaustive:
       default-signifies-exhaustive: true
+    tagliatelle:
+      case:
+        use-field-name: true
+        rules:
+          json: snake
+          yaml: camel
+          xml: camel
+          bson: camel
+          avro: snake
 
 linters:
     enable-all: true
@@ -31,3 +38,4 @@ issues:
     - path: _test\.go
       linters:
         - gomnd
+        - exhaustivestruct
diff --git a/entry/entry.go b/entry/entry.go
index da0e58c..40bc14b 100644
--- a/entry/entry.go
+++ b/entry/entry.go
@@ -13,9 +13,9 @@ const (
 
 type Option func(*Entry)
 
-func WithCapacity(cap int) Option {
+func WithCapacity(c int) Option {
 	return func(e *Entry) {
-		e.fields = make(field.Fields, 0, cap+1)
+		e.fields = make(field.Fields, 0, c+1)
 	}
 }
 
@@ -41,6 +41,7 @@ func New(opts ...Option) *Entry {
 	e := &Entry{
 		fields: make(field.Fields, 0, defaultCap+1),
 		level:  level.Debug,
+		msg:    "",
 	}
 
 	for _, opt := range opts {
diff --git a/entry/pool.go b/entry/pool.go
index 26e42eb..5229eac 100644
--- a/entry/pool.go
+++ b/entry/pool.go
@@ -9,6 +9,7 @@ var pool = sync.Pool{
 	},
 }
 
+//nolint: forcetypeassert
 func Get() *Entry {
 	e := pool.Get().(*Entry)
 	e.Reset()
diff --git a/field/field.go b/field/field.go
index fbbbfc3..ab9bdfb 100644
--- a/field/field.go
+++ b/field/field.go
@@ -255,7 +255,7 @@ type Field struct {
 	value Value
 }
 
-//nolint: gocyclo
+//nolint: gocyclo,cyclop
 func (f Field) AddTo(enc Encoder) {
 	key := string(f.key)
 
diff --git a/field/key.go b/field/key.go
index 1f4c281..731c4d3 100644
--- a/field/key.go
+++ b/field/key.go
@@ -6,7 +6,7 @@ import (
 
 type Key string
 
-//nolint: gocyclo, funlen
+//nolint: gocyclo,funlen,cyclop
 func (k Key) Any(value interface{}) Field {
 	switch v := value.(type) {
 	case string:
@@ -120,8 +120,10 @@ func (k Key) Any(value interface{}) Field {
 	return Field{
 		key: k,
 		value: Value{
-			value: value,
-			vtype: TypeAny,
+			value:    value,
+			vtype:    TypeAny,
+			numeric:  0,
+			stringly: "",
 		},
 	}
 }
diff --git a/field/value.go b/field/value.go
index fc1cf8e..73cd951 100644
--- a/field/value.go
+++ b/field/value.go
@@ -16,10 +16,15 @@ type Value struct {
 }
 
 func (v Value) MarshalJSON() ([]byte, error) {
-	return json.Marshal(v.AsInterface())
+	b, err := json.Marshal(v.AsInterface())
+	if err != nil {
+		return nil, fmt.Errorf("marshal err: %w", err)
+	}
+
+	return b, nil
 }
 
-//nolint: gocyclo
+//nolint: gocyclo,gomnd,cyclop
 func (v Value) String() string {
 	switch {
 	case v.vtype.IsArray(), v.vtype.IsAny():
@@ -57,7 +62,7 @@ func (v Value) String() string {
 	return fmt.Sprintf("%+v", v.AsInterface())
 }
 
-//nolint: gocyclo
+//nolint: gocyclo,cyclop
 func (v Value) AsInterface() interface{} {
 	switch {
 	case v.vtype.IsArray():
@@ -288,20 +293,29 @@ func (v Value) asError() error {
 }
 
 func nilValue(t Type) Value {
-	return Value{vtype: t | TypeNil}
+	return Value{
+		vtype:    t | TypeNil,
+		value:    nil,
+		numeric:  0,
+		stringly: "",
+	}
 }
 
 func stringValue(v string) Value {
 	return Value{
 		stringly: v,
 		vtype:    TypeString,
+		numeric:  0,
+		value:    nil,
 	}
 }
 
 func stringsValue(v []string) Value {
 	return Value{
-		value: v,
-		vtype: TypeString | TypeArray,
+		value:    v,
+		vtype:    TypeString | TypeArray,
+		numeric:  0,
+		stringly: "",
 	}
 }
 
@@ -316,20 +330,27 @@ func stringpValue(v *string) Value {
 func boolValue(b bool) Value {
 	if b {
 		return Value{
-			numeric: 1,
-			vtype:   TypeBool,
+			numeric:  1,
+			vtype:    TypeBool,
+			value:    nil,
+			stringly: "",
 		}
 	}
 
 	return Value{
-		vtype: TypeBool,
+		vtype:    TypeBool,
+		value:    nil,
+		numeric:  0,
+		stringly: "",
 	}
 }
 
 func boolsValue(b []bool) Value {
 	return Value{
-		value: b,
-		vtype: TypeBool | TypeArray,
+		value:    b,
+		vtype:    TypeBool | TypeArray,
+		numeric:  0,
+		stringly: "",
 	}
 }
 
@@ -343,15 +364,19 @@ func boolpValue(b *bool) Value {
 
 func intValue(i int) Value {
 	return Value{
-		vtype:   TypeInt,
-		numeric: uint64(i),
+		vtype:    TypeInt,
+		numeric:  uint64(i),
+		value:    nil,
+		stringly: "",
 	}
 }
 
 func intsValue(i []int) Value {
 	return Value{
-		value: i,
-		vtype: TypeInt | TypeArray,
+		value:    i,
+		vtype:    TypeInt | TypeArray,
+		numeric:  0,
+		stringly: "",
 	}
 }
 
@@ -365,15 +390,19 @@ func intpValue(in *int) Value {
 
 func int8Value(i int8) Value {
 	return Value{
-		vtype:   TypeInt8,
-		numeric: uint64(i),
+		vtype:    TypeInt8,
+		numeric:  uint64(i),
+		value:    nil,
+		stringly: "",
 	}
 }
 
 func int8sValue(i []int8) Value {
 	return Value{
-		value: i,
-		vtype: TypeInt8 | TypeArray,
+		value:    i,
+		vtype:    TypeInt8 | TypeArray,
+		numeric:  0,
+		stringly: "",
 	}
 }
 
@@ -387,15 +416,19 @@ func int8pValue(in *int8) Value {
 
 func int16Value(i int16) Value {
 	return Value{
-		vtype:   TypeInt16,
-		numeric: uint64(i),
+		vtype:    TypeInt16,
+		numeric:  uint64(i),
+		value:    0,
+		stringly: "",
 	}
 }
 
 func int16sValue(i []int16) Value {
 	return Value{
-		value: i,
-		vtype: TypeInt16 | TypeArray,
+		value:    i,
+		vtype:    TypeInt16 | TypeArray,
+		numeric:  0,
+		stringly: "",
 	}
 }
 
@@ -409,15 +442,19 @@ func int16pValue(in *int16) Value {
 
 func int32Value(i int32) Value {
 	return Value{
-		vtype:   TypeInt32,
-		numeric: uint64(i),
+		vtype:    TypeInt32,
+		numeric:  uint64(i),
+		value:    nil,
+		stringly: "",
 	}
 }
 
 func int32sValue(i []int32) Value {
 	return Value{
-		value: i,
-		vtype: TypeInt32 | TypeArray,
+		value:    i,
+		vtype:    TypeInt32 | TypeArray,
+		numeric:  0,
+		stringly: "",
 	}
 }
 
@@ -431,15 +468,19 @@ func int32pValue(in *int32) Value {
 
 func int64Value(i int64) Value {
 	return Value{
-		vtype:   TypeInt64,
-		numeric: uint64(i),
+		vtype:    TypeInt64,
+		numeric:  uint64(i),
+		value:    nil,
+		stringly: "",
 	}
 }
 
 func int64sValue(i []int64) Value {
 	return Value{
-		value: i,
-		vtype: TypeInt64 | TypeArray,
+		value:    i,
+		vtype:    TypeInt64 | TypeArray,
+		numeric:  0,
+		stringly: "",
 	}
 }
 
@@ -453,15 +494,19 @@ func int64pValue(in *int64) Value {
 
 func uintValue(i uint) Value {
 	return Value{
-		vtype:   TypeUint,
-		numeric: uint64(i),
+		vtype:    TypeUint,
+		numeric:  uint64(i),
+		value:    nil,
+		stringly: "",
 	}
 }
 
 func uintsValue(i []uint) Value {
 	return Value{
-		value: i,
-		vtype: TypeUint | TypeArray,
+		value:    i,
+		vtype:    TypeUint | TypeArray,
+		numeric:  0,
+		stringly: "",
 	}
 }
 
@@ -475,15 +520,19 @@ func uintpValue(in *uint) Value {
 
 func uint8Value(i uint8) Value {
 	return Value{
-		vtype:   TypeUint8,
-		numeric: uint64(i),
+		vtype:    TypeUint8,
+		numeric:  uint64(i),
+		value:    nil,
+		stringly: "",
 	}
 }
 
 func uint8sValue(i []uint8) Value {
 	return Value{
-		value: i,
-		vtype: TypeUint8 | TypeArray,
+		value:    i,
+		vtype:    TypeUint8 | TypeArray,
+		numeric:  0,
+		stringly: "",
 	}
 }
 
@@ -497,15 +546,19 @@ func uint8pValue(in *uint8) Value {
 
 func uint16Value(i uint16) Value {
 	return Value{
-		vtype:   TypeUint16,
-		numeric: uint64(i),
+		vtype:    TypeUint16,
+		numeric:  uint64(i),
+		value:    nil,
+		stringly: "",
 	}
 }
 
 func uint16sValue(i []uint16) Value {
 	return Value{
-		value: i,
-		vtype: TypeUint16 | TypeArray,
+		value:    i,
+		vtype:    TypeUint16 | TypeArray,
+		numeric:  0,
+		stringly: "",
 	}
 }
 
@@ -519,15 +572,19 @@ func uint16pValue(in *uint16) Value {
 
 func uint32Value(i uint32) Value {
 	return Value{
-		vtype:   TypeUint32,
-		numeric: uint64(i),
+		vtype:    TypeUint32,
+		numeric:  uint64(i),
+		value:    nil,
+		stringly: "",
 	}
 }
 
 func uint32sValue(i []uint32) Value {
 	return Value{
-		value: i,
-		vtype: TypeUint32 | TypeArray,
+		value:    i,
+		vtype:    TypeUint32 | TypeArray,
+		numeric:  0,
+		stringly: "",
 	}
 }
 
@@ -541,15 +598,19 @@ func uint32pValue(in *uint32) Value {
 
 func uint64Value(i uint64) Value {
 	return Value{
-		vtype:   TypeUint64,
-		numeric: i,
+		vtype:    TypeUint64,
+		numeric:  i,
+		value:    nil,
+		stringly: "",
 	}
 }
 
 func uint64sValue(i []uint64) Value {
 	return Value{
-		value: i,
-		vtype: TypeUint64 | TypeArray,
+		value:    i,
+		vtype:    TypeUint64 | TypeArray,
+		numeric:  0,
+		stringly: "",
 	}
 }
 
@@ -563,15 +624,19 @@ func uint64pValue(in *uint64) Value {
 
 func float32Value(i float32) Value {
 	return Value{
-		vtype:   TypeFloat32,
-		numeric: uint64(math.Float32bits(i)),
+		vtype:    TypeFloat32,
+		numeric:  uint64(math.Float32bits(i)),
+		value:    nil,
+		stringly: "",
 	}
 }
 
 func float32sValue(i []float32) Value {
 	return Value{
-		value: i,
-		vtype: TypeFloat32 | TypeArray,
+		value:    i,
+		vtype:    TypeFloat32 | TypeArray,
+		numeric:  0,
+		stringly: "",
 	}
 }
 
@@ -585,15 +650,19 @@ func float32pValue(in *float32) Value {
 
 func float64Value(i float64) Value {
 	return Value{
-		vtype:   TypeFloat64,
-		numeric: math.Float64bits(i),
+		vtype:    TypeFloat64,
+		numeric:  math.Float64bits(i),
+		value:    nil,
+		stringly: "",
 	}
 }
 
 func float64sValue(i []float64) Value {
 	return Value{
-		value: i,
-		vtype: TypeFloat64 | TypeArray,
+		value:    i,
+		vtype:    TypeFloat64 | TypeArray,
+		numeric:  0,
+		stringly: "",
 	}
 }
 
@@ -607,15 +676,19 @@ func float64pValue(in *float64) Value {
 
 func complex64Value(in complex64) Value {
 	return Value{
-		vtype: TypeComplex64,
-		value: in,
+		vtype:    TypeComplex64,
+		value:    in,
+		numeric:  0,
+		stringly: "",
 	}
 }
 
 func complex64sValue(in []complex64) Value {
 	return Value{
-		vtype: TypeComplex64 | TypeArray,
-		value: in,
+		vtype:    TypeComplex64 | TypeArray,
+		value:    in,
+		numeric:  0,
+		stringly: "",
 	}
 }
 
@@ -629,15 +702,19 @@ func complex64pValue(in *complex64) Value {
 
 func complex128Value(in complex128) Value {
 	return Value{
-		vtype: TypeComplex64,
-		value: in,
+		vtype:    TypeComplex64,
+		value:    in,
+		numeric:  0,
+		stringly: "",
 	}
 }
 
 func complex128sValue(in []complex128) Value {
 	return Value{
-		vtype: TypeComplex128 | TypeArray,
-		value: in,
+		vtype:    TypeComplex128 | TypeArray,
+		value:    in,
+		numeric:  0,
+		stringly: "",
 	}
 }
 
@@ -651,15 +728,19 @@ func complex128pValue(in *complex128) Value {
 
 func uintptrValue(in uintptr) Value {
 	return Value{
-		vtype: TypeUintptr,
-		value: in,
+		vtype:    TypeUintptr,
+		numeric:  0,
+		stringly: "",
+		value:    in,
 	}
 }
 
 func uintptrsValue(in []uintptr) Value {
 	return Value{
-		vtype: TypeUintptr | TypeArray,
-		value: in,
+		vtype:    TypeUintptr | TypeArray,
+		value:    in,
+		numeric:  0,
+		stringly: "",
 	}
 }
 
@@ -673,22 +754,28 @@ func uintptrpValue(in *uintptr) Value {
 
 func bytesValue(in []byte) Value {
 	return Value{
-		vtype: TypeBinary,
-		value: in,
+		vtype:    TypeBinary,
+		value:    in,
+		numeric:  0,
+		stringly: "",
 	}
 }
 
 func durationValue(in time.Duration) Value {
 	return Value{
-		vtype: TypeDuration,
-		value: in,
+		vtype:    TypeDuration,
+		value:    in,
+		numeric:  0,
+		stringly: "",
 	}
 }
 
 func durationsValue(in []time.Duration) Value {
 	return Value{
-		vtype: TypeDuration | TypeArray,
-		value: in,
+		vtype:    TypeDuration | TypeArray,
+		value:    in,
+		numeric:  0,
+		stringly: "",
 	}
 }
 
@@ -717,6 +804,7 @@ func formatTimeValue(format string, in time.Time) Value {
 		vtype:    TypeTime,
 		value:    in,
 		stringly: format,
+		numeric:  0,
 	}
 }
 
@@ -725,6 +813,7 @@ func formatTimesValue(format string, in []time.Time) Value {
 		vtype:    TypeTime | TypeArray,
 		value:    in,
 		stringly: format,
+		numeric:  0,
 	}
 }
 
@@ -739,8 +828,10 @@ func formatTimepValue(format string, in *time.Time) Value {
 func errorValue(in error) Value {
 	if in != nil {
 		return Value{
-			vtype: TypeError,
-			value: in,
+			vtype:    TypeError,
+			value:    in,
+			numeric:  0,
+			stringly: "",
 		}
 	}
 
@@ -749,7 +840,9 @@ func errorValue(in error) Value {
 
 func errorsValue(in []error) Value {
 	return Value{
-		vtype: TypeError | TypeArray,
-		value: in,
+		vtype:    TypeError | TypeArray,
+		value:    in,
+		numeric:  0,
+		stringly: "",
 	}
 }
diff --git a/handler/logrus/logger.go b/handler/logrus/logger.go
index 21999fb..7e1942a 100644
--- a/handler/logrus/logger.go
+++ b/handler/logrus/logger.go
@@ -21,20 +21,22 @@ func New(log *logrus.Logger) log.Logger {
 		for _, field := range e.Fields() {
 			lrgFields[string(field.Key())] = field.AsInterface()
 		}
-		write := log.WithContext(ctx).WithFields(lrgFields)
+
+		entry := log.WithContext(ctx).WithFields(lrgFields)
+
 		switch e.Level() {
 		case level.Emergency:
-			write.Panic(e.Message())
+			entry.Panic(e.Message())
 		case level.Alert:
-			write.Fatal(e.Message())
+			entry.Fatal(e.Message())
 		case level.Critical, level.Error:
-			write.Error(e.Message())
+			entry.Error(e.Message())
 		case level.Warning:
-			write.Warn(e.Message())
+			entry.Warn(e.Message())
 		case level.Notice, level.Info:
-			write.Info(e.Message())
+			entry.Info(e.Message())
 		case level.Debug:
-			write.Debug(e.Message())
+			entry.Debug(e.Message())
 		}
 
 		return 0, nil
diff --git a/handler/logrus/logger_test.go b/handler/logrus/logger_test.go
index f818e34..2dbc3dd 100644
--- a/handler/logrus/logger_test.go
+++ b/handler/logrus/logger_test.go
@@ -13,6 +13,8 @@ import (
 )
 
 func TestNew(t *testing.T) {
+	t.Parallel()
+
 	ctx := context.Background()
 	buf := &bytes.Buffer{}
 
diff --git a/handler/zap/logger_test.go b/handler/zap/logger_test.go
index f6de757..88e9907 100644
--- a/handler/zap/logger_test.go
+++ b/handler/zap/logger_test.go
@@ -14,6 +14,8 @@ import (
 )
 
 func TestNew(t *testing.T) {
+	t.Parallel()
+
 	ctx := context.Background()
 	buf := &bytes.Buffer{}
 	core := zapcore.NewCore(zapcore.NewJSONEncoder(zapcore.EncoderConfig{
diff --git a/level/level.go b/level/level.go
index 6ce25a7..975fa2f 100644
--- a/level/level.go
+++ b/level/level.go
@@ -2,6 +2,7 @@ package level
 
 import (
 	"encoding/json"
+	"fmt"
 	"strings"
 )
 
@@ -28,7 +29,12 @@ const (
 )
 
 func (l Level) MarshalJSON() ([]byte, error) {
-	return json.Marshal(l.String())
+	b, err := json.Marshal(l.String())
+	if err != nil {
+		return nil, fmt.Errorf("marshal err: %w", err)
+	}
+
+	return b, nil
 }
 
 func (l Level) Is(level Level) bool {
@@ -42,7 +48,7 @@ func (l Level) Enabled(level Level) bool {
 func (l *Level) UnmarshalJSON(in []byte) error {
 	var v string
 	if err := json.Unmarshal(in, &v); err != nil {
-		return err
+		return fmt.Errorf("unmarshal err: %w", err)
 	}
 
 	lvl := Parse(v)
diff --git a/logger_test.go b/logger_test.go
index b638402..a3752a5 100644
--- a/logger_test.go
+++ b/logger_test.go
@@ -17,6 +17,8 @@ import (
 var requestID ctxKey = "requestID"
 
 func TestFields(t *testing.T) {
+	t.Parallel()
+
 	type rObj struct {
 		id string
 	}
@@ -58,6 +60,8 @@ func TestFields(t *testing.T) {
 }
 
 func TestWriter(t *testing.T) {
+	t.Parallel()
+
 	ctx := context.Background()
 
 	success := "msg=\"info message\" err=file already exists requestID=6a5fa048-7181-11ea-bc55-0242ac1311113 level=info\n"
@@ -84,6 +88,8 @@ func TestWriter(t *testing.T) {
 }
 
 func TestLogger(t *testing.T) {
+	t.Parallel()
+
 	ctx := context.Background()
 	buf := &bytes.Buffer{}
 	logger := log.New(log.WithWriter(buf)).With(log.WithContextValue(requestID), log.WithLevel("level", level.Info))
diff --git a/writter.go b/writter.go
index 3b2b78c..9c069d9 100644
--- a/writter.go
+++ b/writter.go
@@ -4,6 +4,7 @@ import (
 	"bytes"
 	"context"
 	"encoding/json"
+	"fmt"
 	"io"
 	"os"
 	"strings"
@@ -23,10 +24,15 @@ func New(opts ...Option) Logger {
 	return func(_ context.Context, entry *entry.Entry) (int, error) {
 		b, err := l.e(entry)
 		if err != nil {
-			return 0, err
+			return 0, fmt.Errorf("enode err: %w", err)
 		}
 
-		return l.w.Write(b)
+		n, err := l.w.Write(b)
+		if err != nil {
+			return 0, fmt.Errorf("failed write: %w", err)
+		}
+
+		return n, nil
 	}
 }
 
@@ -70,6 +76,7 @@ func WithJSONFormat() Option {
 	return WithEncode(jsonFormat)
 }
 
+//nolint: forcetypeassert
 func stringFormat() func(entry *entry.Entry) ([]byte, error) {
 	pool := sync.Pool{
 		New: func() interface{} {
@@ -105,7 +112,7 @@ func stringFormat() func(entry *entry.Entry) ([]byte, error) {
 func jsonFormat(entry *entry.Entry) ([]byte, error) {
 	res, err := json.Marshal(entry.AddString("msg", entry.Message()).Fields().AsMap())
 	if err != nil {
-		return nil, err
+		return nil, fmt.Errorf("marshal err: %w", err)
 	}
 
 	return append(res, []byte("\n")...), nil