diff --git a/dal/clickhouse/clickhouse.go b/dal/clickhouse/clickhouse.go
index 38a762b..e14a456 100644
--- a/dal/clickhouse/clickhouse.go
+++ b/dal/clickhouse/clickhouse.go
@@ -300,7 +300,26 @@ func (d *DAL) recordInserter(
 	return nil
 }
 
+type DebugNeedMutex struct {}
+
 func (d *DAL) PutRecord(record model.Record) {
+	defer func() {
+		val := recover()
+		if val != nil {
+			d.logger.Emit(DebugNeedMutex{})
+		}
+	}()
+
 	d.buffer = append(d.buffer, record)
 	return
 }
+
+func (d *DAL) AddColumn(ctx context.Context, name, fieldType string) error {
+	if _, err := d.db.ExecContext(ctx, fmt.Sprintf(`
+	ALTER TABLE statistics ADD COLUMN IF NOT EXISTS %s %s
+`, name, fieldType)); err != nil {
+		return err
+	}
+
+	return nil
+}
diff --git a/generate.go b/generate.go
index 06ab7d0..38998b1 100644
--- a/generate.go
+++ b/generate.go
@@ -1 +1,4 @@
 package main
+
+
+//go:generate protoc -I ./proto ./proto/trashlog.proto --go_out=plugins=grpc:./proto/generated
diff --git a/main.go b/main.go
index 943bcc6..d33377f 100644
--- a/main.go
+++ b/main.go
@@ -5,8 +5,6 @@ import (
 	"github.com/skeris/appInit"
 )
 
-//go:generate protoc -I ./proto ./proto/trashlog.proto --go_out=plugins=grpc:./proto/generated
-
 func main() {
 	appInit.Initialize(app.New, getEnv())
 }
\ No newline at end of file
diff --git a/proto/generated/trashlog.pb.go b/proto/generated/trashlog.pb.go
index fd2a672..25c54ce 100644
--- a/proto/generated/trashlog.pb.go
+++ b/proto/generated/trashlog.pb.go
@@ -24,6 +24,100 @@ const (
 	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
 )
 
+type Fields2Add struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Fields map[string]string `protobuf:"bytes,1,rep,name=Fields,proto3" json:"Fields,omitempty" protobuf_key:"bytes,1,opt,name=key,proto3" protobuf_val:"bytes,2,opt,name=value,proto3"`
+}
+
+func (x *Fields2Add) Reset() {
+	*x = Fields2Add{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_trashlog_proto_msgTypes[0]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *Fields2Add) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*Fields2Add) ProtoMessage() {}
+
+func (x *Fields2Add) ProtoReflect() protoreflect.Message {
+	mi := &file_trashlog_proto_msgTypes[0]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use Fields2Add.ProtoReflect.Descriptor instead.
+func (*Fields2Add) Descriptor() ([]byte, []int) {
+	return file_trashlog_proto_rawDescGZIP(), []int{0}
+}
+
+func (x *Fields2Add) GetFields() map[string]string {
+	if x != nil {
+		return x.Fields
+	}
+	return nil
+}
+
+type NotModified struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Columns map[string]string `protobuf:"bytes,1,rep,name=Columns,proto3" json:"Columns,omitempty" protobuf_key:"bytes,1,opt,name=key,proto3" protobuf_val:"bytes,2,opt,name=value,proto3"`
+}
+
+func (x *NotModified) Reset() {
+	*x = NotModified{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_trashlog_proto_msgTypes[1]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *NotModified) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*NotModified) ProtoMessage() {}
+
+func (x *NotModified) ProtoReflect() protoreflect.Message {
+	mi := &file_trashlog_proto_msgTypes[1]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use NotModified.ProtoReflect.Descriptor instead.
+func (*NotModified) Descriptor() ([]byte, []int) {
+	return file_trashlog_proto_rawDescGZIP(), []int{1}
+}
+
+func (x *NotModified) GetColumns() map[string]string {
+	if x != nil {
+		return x.Columns
+	}
+	return nil
+}
+
 type Dummy struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -33,7 +127,7 @@ type Dummy struct {
 func (x *Dummy) Reset() {
 	*x = Dummy{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_trashlog_proto_msgTypes[0]
+		mi := &file_trashlog_proto_msgTypes[2]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -46,7 +140,7 @@ func (x *Dummy) String() string {
 func (*Dummy) ProtoMessage() {}
 
 func (x *Dummy) ProtoReflect() protoreflect.Message {
-	mi := &file_trashlog_proto_msgTypes[0]
+	mi := &file_trashlog_proto_msgTypes[2]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -59,7 +153,7 @@ func (x *Dummy) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use Dummy.ProtoReflect.Descriptor instead.
 func (*Dummy) Descriptor() ([]byte, []int) {
-	return file_trashlog_proto_rawDescGZIP(), []int{0}
+	return file_trashlog_proto_rawDescGZIP(), []int{2}
 }
 
 type Record struct {
@@ -80,7 +174,7 @@ type Record struct {
 func (x *Record) Reset() {
 	*x = Record{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_trashlog_proto_msgTypes[1]
+		mi := &file_trashlog_proto_msgTypes[3]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -93,7 +187,7 @@ func (x *Record) String() string {
 func (*Record) ProtoMessage() {}
 
 func (x *Record) ProtoReflect() protoreflect.Message {
-	mi := &file_trashlog_proto_msgTypes[1]
+	mi := &file_trashlog_proto_msgTypes[3]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -106,7 +200,7 @@ func (x *Record) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use Record.ProtoReflect.Descriptor instead.
 func (*Record) Descriptor() ([]byte, []int) {
-	return file_trashlog_proto_rawDescGZIP(), []int{1}
+	return file_trashlog_proto_rawDescGZIP(), []int{3}
 }
 
 func (x *Record) GetLevel() string {
@@ -180,7 +274,7 @@ type SvcData struct {
 func (x *SvcData) Reset() {
 	*x = SvcData{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_trashlog_proto_msgTypes[2]
+		mi := &file_trashlog_proto_msgTypes[4]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -193,7 +287,7 @@ func (x *SvcData) String() string {
 func (*SvcData) ProtoMessage() {}
 
 func (x *SvcData) ProtoReflect() protoreflect.Message {
-	mi := &file_trashlog_proto_msgTypes[2]
+	mi := &file_trashlog_proto_msgTypes[4]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -206,7 +300,7 @@ func (x *SvcData) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use SvcData.ProtoReflect.Descriptor instead.
 func (*SvcData) Descriptor() ([]byte, []int) {
-	return file_trashlog_proto_rawDescGZIP(), []int{2}
+	return file_trashlog_proto_rawDescGZIP(), []int{4}
 }
 
 func (x *SvcData) GetBuildTime() uint64 {
@@ -260,7 +354,7 @@ type Value struct {
 func (x *Value) Reset() {
 	*x = Value{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_trashlog_proto_msgTypes[3]
+		mi := &file_trashlog_proto_msgTypes[5]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -273,7 +367,7 @@ func (x *Value) String() string {
 func (*Value) ProtoMessage() {}
 
 func (x *Value) ProtoReflect() protoreflect.Message {
-	mi := &file_trashlog_proto_msgTypes[3]
+	mi := &file_trashlog_proto_msgTypes[5]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -286,7 +380,7 @@ func (x *Value) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use Value.ProtoReflect.Descriptor instead.
 func (*Value) Descriptor() ([]byte, []int) {
-	return file_trashlog_proto_rawDescGZIP(), []int{3}
+	return file_trashlog_proto_rawDescGZIP(), []int{5}
 }
 
 func (m *Value) GetValue() isValue_Value {
@@ -356,57 +450,77 @@ var File_trashlog_proto protoreflect.FileDescriptor
 
 var file_trashlog_proto_rawDesc = []byte{
 	0x0a, 0x0e, 0x74, 0x72, 0x61, 0x73, 0x68, 0x6c, 0x6f, 0x67, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f,
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+	0x52, 0x04, 0x46, 0x6c, 0x61, 0x67, 0x42, 0x07, 0x0a, 0x05, 0x56, 0x61, 0x6c, 0x75, 0x65, 0x32,
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+	0x67, 0x2e, 0x44, 0x75, 0x6d, 0x6d, 0x79, 0x22, 0x00, 0x28, 0x01, 0x12, 0x37, 0x0a, 0x06, 0x4d,
+	0x6f, 0x64, 0x69, 0x66, 0x79, 0x12, 0x14, 0x2e, 0x74, 0x72, 0x61, 0x73, 0x68, 0x6c, 0x6f, 0x67,
+	0x2e, 0x46, 0x69, 0x65, 0x6c, 0x64, 0x73, 0x32, 0x41, 0x64, 0x64, 0x1a, 0x15, 0x2e, 0x74, 0x72,
+	0x61, 0x73, 0x68, 0x6c, 0x6f, 0x67, 0x2e, 0x4e, 0x6f, 0x74, 0x4d, 0x6f, 0x64, 0x69, 0x66, 0x69,
+	0x65, 0x64, 0x22, 0x00, 0x42, 0x11, 0x5a, 0x0f, 0x2e, 0x3b, 0x74, 0x72, 0x61, 0x73, 0x68, 0x6c,
+	0x6f, 0x67, 0x50, 0x72, 0x6f, 0x74, 0x6f, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
 }
 
 var (
@@ -421,28 +535,36 @@ func file_trashlog_proto_rawDescGZIP() []byte {
 	return file_trashlog_proto_rawDescData
 }
 
-var file_trashlog_proto_msgTypes = make([]protoimpl.MessageInfo, 6)
+var file_trashlog_proto_msgTypes = make([]protoimpl.MessageInfo, 10)
 var file_trashlog_proto_goTypes = []interface{}{
-	(*Dummy)(nil),   // 0: trashlog.Dummy
-	(*Record)(nil),  // 1: trashlog.Record
-	(*SvcData)(nil), // 2: trashlog.SvcData
-	(*Value)(nil),   // 3: trashlog.Value
-	nil,             // 4: trashlog.Record.KeyFieldsEntry
-	nil,             // 5: trashlog.Record.CtxFieldsEntry
+	(*Fields2Add)(nil),  // 0: trashlog.Fields2Add
+	(*NotModified)(nil), // 1: trashlog.NotModified
+	(*Dummy)(nil),       // 2: trashlog.Dummy
+	(*Record)(nil),      // 3: trashlog.Record
+	(*SvcData)(nil),     // 4: trashlog.SvcData
+	(*Value)(nil),       // 5: trashlog.Value
+	nil,                 // 6: trashlog.Fields2Add.FieldsEntry
+	nil,                 // 7: trashlog.NotModified.ColumnsEntry
+	nil,                 // 8: trashlog.Record.KeyFieldsEntry
+	nil,                 // 9: trashlog.Record.CtxFieldsEntry
 }
 var file_trashlog_proto_depIdxs = []int32{
-	4, // 0: trashlog.Record.KeyFields:type_name -> trashlog.Record.KeyFieldsEntry
-	5, // 1: trashlog.Record.CtxFields:type_name -> trashlog.Record.CtxFieldsEntry
-	2, // 2: trashlog.Record.SvcFields:type_name -> trashlog.SvcData
-	3, // 3: trashlog.Record.KeyFieldsEntry.value:type_name -> trashlog.Value
-	3, // 4: trashlog.Record.CtxFieldsEntry.value:type_name -> trashlog.Value
-	1, // 5: trashlog.Trashlog.Valve:input_type -> trashlog.Record
-	0, // 6: trashlog.Trashlog.Valve:output_type -> trashlog.Dummy
-	6, // [6:7] is the sub-list for method output_type
-	5, // [5:6] is the sub-list for method input_type
-	5, // [5:5] is the sub-list for extension type_name
-	5, // [5:5] is the sub-list for extension extendee
-	0, // [0:5] is the sub-list for field type_name
+	6, // 0: trashlog.Fields2Add.Fields:type_name -> trashlog.Fields2Add.FieldsEntry
+	7, // 1: trashlog.NotModified.Columns:type_name -> trashlog.NotModified.ColumnsEntry
+	8, // 2: trashlog.Record.KeyFields:type_name -> trashlog.Record.KeyFieldsEntry
+	9, // 3: trashlog.Record.CtxFields:type_name -> trashlog.Record.CtxFieldsEntry
+	4, // 4: trashlog.Record.SvcFields:type_name -> trashlog.SvcData
+	5, // 5: trashlog.Record.KeyFieldsEntry.value:type_name -> trashlog.Value
+	5, // 6: trashlog.Record.CtxFieldsEntry.value:type_name -> trashlog.Value
+	3, // 7: trashlog.Trashlog.Valve:input_type -> trashlog.Record
+	0, // 8: trashlog.Trashlog.Modify:input_type -> trashlog.Fields2Add
+	2, // 9: trashlog.Trashlog.Valve:output_type -> trashlog.Dummy
+	1, // 10: trashlog.Trashlog.Modify:output_type -> trashlog.NotModified
+	9, // [9:11] is the sub-list for method output_type
+	7, // [7:9] is the sub-list for method input_type
+	7, // [7:7] is the sub-list for extension type_name
+	7, // [7:7] is the sub-list for extension extendee
+	0, // [0:7] is the sub-list for field type_name
 }
 
 func init() { file_trashlog_proto_init() }
@@ -452,7 +574,7 @@ func file_trashlog_proto_init() {
 	}
 	if !protoimpl.UnsafeEnabled {
 		file_trashlog_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*Dummy); i {
+			switch v := v.(*Fields2Add); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -464,7 +586,7 @@ func file_trashlog_proto_init() {
 			}
 		}
 		file_trashlog_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*Record); i {
+			switch v := v.(*NotModified); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -476,7 +598,7 @@ func file_trashlog_proto_init() {
 			}
 		}
 		file_trashlog_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*SvcData); i {
+			switch v := v.(*Dummy); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -488,6 +610,30 @@ func file_trashlog_proto_init() {
 			}
 		}
 		file_trashlog_proto_msgTypes[3].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*Record); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_trashlog_proto_msgTypes[4].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*SvcData); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_trashlog_proto_msgTypes[5].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*Value); i {
 			case 0:
 				return &v.state
@@ -500,7 +646,7 @@ func file_trashlog_proto_init() {
 			}
 		}
 	}
-	file_trashlog_proto_msgTypes[3].OneofWrappers = []interface{}{
+	file_trashlog_proto_msgTypes[5].OneofWrappers = []interface{}{
 		(*Value_Str)(nil),
 		(*Value_Num)(nil),
 		(*Value_Double)(nil),
@@ -512,7 +658,7 @@ func file_trashlog_proto_init() {
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_trashlog_proto_rawDesc,
 			NumEnums:      0,
-			NumMessages:   6,
+			NumMessages:   10,
 			NumExtensions: 0,
 			NumServices:   1,
 		},
@@ -539,6 +685,7 @@ const _ = grpc.SupportPackageIsVersion6
 // For semantics around ctx use and closing/ending streaming RPCs, please refer to https://godoc.org/google.golang.org/grpc#ClientConn.NewStream.
 type TrashlogClient interface {
 	Valve(ctx context.Context, opts ...grpc.CallOption) (Trashlog_ValveClient, error)
+	Modify(ctx context.Context, in *Fields2Add, opts ...grpc.CallOption) (*NotModified, error)
 }
 
 type trashlogClient struct {
@@ -583,9 +730,19 @@ func (x *trashlogValveClient) CloseAndRecv() (*Dummy, error) {
 	return m, nil
 }
 
+func (c *trashlogClient) Modify(ctx context.Context, in *Fields2Add, opts ...grpc.CallOption) (*NotModified, error) {
+	out := new(NotModified)
+	err := c.cc.Invoke(ctx, "/trashlog.Trashlog/Modify", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
 // TrashlogServer is the server API for Trashlog service.
 type TrashlogServer interface {
 	Valve(Trashlog_ValveServer) error
+	Modify(context.Context, *Fields2Add) (*NotModified, error)
 }
 
 // UnimplementedTrashlogServer can be embedded to have forward compatible implementations.
@@ -595,6 +752,9 @@ type UnimplementedTrashlogServer struct {
 func (*UnimplementedTrashlogServer) Valve(Trashlog_ValveServer) error {
 	return status.Errorf(codes.Unimplemented, "method Valve not implemented")
 }
+func (*UnimplementedTrashlogServer) Modify(context.Context, *Fields2Add) (*NotModified, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method Modify not implemented")
+}
 
 func RegisterTrashlogServer(s *grpc.Server, srv TrashlogServer) {
 	s.RegisterService(&_Trashlog_serviceDesc, srv)
@@ -626,10 +786,33 @@ func (x *trashlogValveServer) Recv() (*Record, error) {
 	return m, nil
 }
 
+func _Trashlog_Modify_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(Fields2Add)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(TrashlogServer).Modify(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/trashlog.Trashlog/Modify",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(TrashlogServer).Modify(ctx, req.(*Fields2Add))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
 var _Trashlog_serviceDesc = grpc.ServiceDesc{
 	ServiceName: "trashlog.Trashlog",
 	HandlerType: (*TrashlogServer)(nil),
-	Methods:     []grpc.MethodDesc{},
+	Methods: []grpc.MethodDesc{
+		{
+			MethodName: "Modify",
+			Handler:    _Trashlog_Modify_Handler,
+		},
+	},
 	Streams: []grpc.StreamDesc{
 		{
 			StreamName:    "Valve",
diff --git a/proto/trashlog.proto b/proto/trashlog.proto
index 77b2cf5..caa966e 100644
--- a/proto/trashlog.proto
+++ b/proto/trashlog.proto
@@ -6,6 +6,15 @@ package trashlog;
 
 service Trashlog{
   rpc Valve(stream Record) returns (Dummy) {}
+  rpc Modify(Fields2Add) returns (NotModified) {}
+}
+
+message Fields2Add{
+  map<string, string> Fields = 1;
+}
+
+message NotModified{
+  map<string, string> Columns = 1;
 }
 
 message Dummy{}
diff --git a/sink/sink.go b/sink/sink.go
index 931125c..07ef1e3 100644
--- a/sink/sink.go
+++ b/sink/sink.go
@@ -1,6 +1,7 @@
 package sink
 
 import (
+	"context"
 	"github.com/BlackBroker/trashlog/dal/clickhouse"
 	"github.com/BlackBroker/trashlog/model"
 	trashlogProto "github.com/BlackBroker/trashlog/proto/generated"
@@ -19,6 +20,22 @@ func New(log hlog.Logger, store *clickhouse.DAL) *Sink {
 	}
 }
 
+func (s *Sink) Modify(
+	ctx context.Context,
+	fields *trashlogProto.Fields2Add,
+	) (*trashlogProto.NotModified, error) {
+
+	var result = trashlogProto.NotModified{}
+
+	for name, fieldType := range fields.Fields {
+		if err := s.store.AddColumn(ctx, name, fieldType); err != nil {
+			result.Columns[name] = err.Error()
+		}
+	}
+
+	return &result, nil
+}
+
 func (s *Sink) Valve(stream trashlogProto.Trashlog_ValveServer) error {
 	ctxChan := stream.Context()
 	dataChan := make(chan *trashlogProto.Record)