diff --git a/models/check_definition.pb.go b/models/check_definition.pb.go
index bded6441..33925422 100644
--- a/models/check_definition.pb.go
+++ b/models/check_definition.pb.go
@@ -132,6 +132,7 @@ func (m *Check) GetHttpCheck() *HTTPCheck {
 type TCPCheck struct {
 	Port             uint32 `protobuf:"varint,1,opt,name=port,proto3" json:"port"`
 	ConnectTimeoutMs uint64 `protobuf:"varint,2,opt,name=connect_timeout_ms,json=connectTimeoutMs,proto3" json:"connect_timeout_ms,omitempty"`
+	IntervalMs       uint64 `protobuf:"varint,3,opt,name=interval_ms,json=intervalMs,proto3" json:"interval_ms,omitempty"`
 }
 
 func (m *TCPCheck) Reset()      { *m = TCPCheck{} }
@@ -180,10 +181,18 @@ func (m *TCPCheck) GetConnectTimeoutMs() uint64 {
 	return 0
 }
 
+func (m *TCPCheck) GetIntervalMs() uint64 {
+	if m != nil {
+		return m.IntervalMs
+	}
+	return 0
+}
+
 type HTTPCheck struct {
 	Port             uint32 `protobuf:"varint,1,opt,name=port,proto3" json:"port"`
 	RequestTimeoutMs uint64 `protobuf:"varint,2,opt,name=request_timeout_ms,json=requestTimeoutMs,proto3" json:"request_timeout_ms,omitempty"`
 	Path             string `protobuf:"bytes,3,opt,name=path,proto3" json:"path"`
+	IntervalMs       uint64 `protobuf:"varint,4,opt,name=interval_ms,json=intervalMs,proto3" json:"interval_ms,omitempty"`
 }
 
 func (m *HTTPCheck) Reset()      { *m = HTTPCheck{} }
@@ -239,6 +248,13 @@ func (m *HTTPCheck) GetPath() string {
 	return ""
 }
 
+func (m *HTTPCheck) GetIntervalMs() uint64 {
+	if m != nil {
+		return m.IntervalMs
+	}
+	return 0
+}
+
 func init() {
 	proto.RegisterType((*CheckDefinition)(nil), "models.CheckDefinition")
 	proto.RegisterType((*Check)(nil), "models.Check")
@@ -249,30 +265,32 @@ func init() {
 func init() { proto.RegisterFile("check_definition.proto", fileDescriptor_048a62b88ce7913d) }
 
 var fileDescriptor_048a62b88ce7913d = []byte{
-	// 366 bytes of a gzipped FileDescriptorProto
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-	0x6f, 0x5f, 0x6d, 0x7d, 0x21, 0xbc, 0x07, 0x58, 0x4d, 0x1f, 0xff, 0x81, 0x3c, 0xe9, 0x63, 0x5d,
-	0xb2, 0xd8, 0x05, 0x8a, 0x81, 0xba, 0xa8, 0xd7, 0x1c, 0xb6, 0xcb, 0x06, 0x67, 0x7c, 0x9f, 0x97,
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-	0xfe, 0x04, 0x2e, 0x94, 0x23, 0x18, 0x58, 0x13, 0xe9, 0x1b, 0x55, 0xf8, 0x87, 0x39, 0x6b, 0x22,
-	0x7d, 0x1b, 0xe6, 0xe8, 0x7a, 0xb9, 0xa1, 0xda, 0x6a, 0x43, 0xb5, 0xfd, 0x86, 0xa2, 0x17, 0x45,
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-	0xbe, 0x02, 0x00, 0x00, 0xff, 0xff, 0xf9, 0x69, 0xc1, 0x97, 0x2f, 0x02, 0x00, 0x00,
+	// 393 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x84, 0x92, 0xb1, 0x6e, 0xe2, 0x40,
+	0x10, 0x86, 0xbd, 0xc0, 0x21, 0xbc, 0x88, 0x3b, 0x6e, 0x8b, 0x13, 0x3a, 0x9d, 0x16, 0x64, 0xe9,
+	0x24, 0x8a, 0xc3, 0x9c, 0xb8, 0x7b, 0x02, 0x48, 0x91, 0x06, 0x29, 0x72, 0xdc, 0x5b, 0xb0, 0x2c,
+	0xb6, 0x15, 0xdb, 0xeb, 0xd8, 0xeb, 0xa4, 0xcd, 0x23, 0xa4, 0xca, 0x33, 0xe4, 0x51, 0x52, 0x52,
+	0x52, 0xa1, 0x60, 0x9a, 0x88, 0x8a, 0x47, 0x88, 0x3c, 0xb6, 0x49, 0x84, 0x22, 0xa5, 0x59, 0xcd,
+	0xcc, 0xff, 0xcf, 0xff, 0x4d, 0xb1, 0xf8, 0x07, 0x73, 0x38, 0xbb, 0xb2, 0x16, 0x7c, 0xe9, 0x06,
+	0xae, 0x74, 0x45, 0xa0, 0x87, 0x91, 0x90, 0x82, 0xd4, 0x7d, 0xb1, 0xe0, 0x5e, 0xfc, 0x73, 0x60,
+	0xbb, 0xd2, 0x49, 0xe6, 0x3a, 0x13, 0xfe, 0xd0, 0x16, 0xb6, 0x18, 0x82, 0x3c, 0x4f, 0x96, 0xd0,
+	0x41, 0x03, 0x55, 0xbe, 0xa6, 0xd9, 0xf8, 0xdb, 0x24, 0x0b, 0x3c, 0x3b, 0xe6, 0x91, 0xdf, 0xb8,
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+	0x92, 0x01, 0xc6, 0x9e, 0xb0, 0xad, 0x58, 0x24, 0x11, 0xe3, 0x9d, 0x4a, 0x0f, 0xf5, 0xd5, 0xf1,
+	0xd7, 0xfd, 0xa6, 0xfb, 0x6e, 0x6a, 0xa8, 0x9e, 0xb0, 0x2f, 0xa1, 0xd4, 0x1c, 0xfc, 0x05, 0xf6,
+	0xc9, 0x00, 0xab, 0x92, 0x85, 0x16, 0xa4, 0x74, 0x50, 0x0f, 0xf5, 0x9b, 0xa3, 0x76, 0x49, 0x30,
+	0x27, 0x17, 0x39, 0xa4, 0x21, 0x59, 0x98, 0xdb, 0xff, 0x62, 0xec, 0x48, 0x59, 0xfa, 0x2b, 0xe0,
+	0xff, 0x5e, 0xfa, 0xcf, 0x4d, 0xb3, 0x58, 0x50, 0x33, 0x13, 0x94, 0xda, 0x2d, 0x6e, 0x94, 0x39,
+	0xe4, 0x17, 0xae, 0x85, 0x22, 0x92, 0xc0, 0x69, 0x8d, 0x1b, 0xfb, 0x4d, 0x17, 0x7a, 0x03, 0x5e,
+	0xf2, 0x07, 0x13, 0x26, 0x82, 0x80, 0x33, 0x69, 0x49, 0xd7, 0xe7, 0x22, 0x91, 0x96, 0x1f, 0x03,
+	0xa3, 0x66, 0xb4, 0x0b, 0xc5, 0xcc, 0x85, 0x69, 0x4c, 0xba, 0xb8, 0xe9, 0x06, 0x92, 0x47, 0x37,
+	0x33, 0x2f, 0xb3, 0x55, 0xc1, 0x86, 0xcb, 0xd1, 0x34, 0xd6, 0x1e, 0x10, 0x56, 0x8f, 0x17, 0x7d,
+	0x8e, 0x8e, 0xf8, 0x75, 0xc2, 0xe3, 0x8f, 0xd0, 0x85, 0xf2, 0x86, 0xce, 0xb2, 0x66, 0xd2, 0x01,
+	0xa6, 0x5a, 0x64, 0xcd, 0xa4, 0x63, 0xc0, 0x7b, 0x7a, 0x58, 0xed, 0xf4, 0xb0, 0xf1, 0xff, 0xd5,
+	0x96, 0x2a, 0xeb, 0x2d, 0x55, 0x0e, 0x5b, 0x8a, 0xee, 0x52, 0x8a, 0x1e, 0x53, 0x8a, 0x9e, 0x52,
+	0x8a, 0x56, 0x29, 0x45, 0xcf, 0x29, 0x45, 0x2f, 0x29, 0x55, 0x0e, 0x29, 0x45, 0xf7, 0x3b, 0xaa,
+	0xac, 0x76, 0x54, 0x59, 0xef, 0xa8, 0x32, 0xaf, 0xc3, 0x0f, 0xf9, 0xf7, 0x1a, 0x00, 0x00, 0xff,
+	0xff, 0x95, 0x2c, 0x15, 0x9b, 0x72, 0x02, 0x00, 0x00,
 }
 
 func (this *CheckDefinition) Equal(that interface{}) bool {
@@ -359,6 +377,9 @@ func (this *TCPCheck) Equal(that interface{}) bool {
 	if this.ConnectTimeoutMs != that1.ConnectTimeoutMs {
 		return false
 	}
+	if this.IntervalMs != that1.IntervalMs {
+		return false
+	}
 	return true
 }
 func (this *HTTPCheck) Equal(that interface{}) bool {
@@ -389,6 +410,9 @@ func (this *HTTPCheck) Equal(that interface{}) bool {
 	if this.Path != that1.Path {
 		return false
 	}
+	if this.IntervalMs != that1.IntervalMs {
+		return false
+	}
 	return true
 }
 func (this *CheckDefinition) GoString() string {
@@ -423,10 +447,11 @@ func (this *TCPCheck) GoString() string {
 	if this == nil {
 		return "nil"
 	}
-	s := make([]string, 0, 6)
+	s := make([]string, 0, 7)
 	s = append(s, "&models.TCPCheck{")
 	s = append(s, "Port: "+fmt.Sprintf("%#v", this.Port)+",\n")
 	s = append(s, "ConnectTimeoutMs: "+fmt.Sprintf("%#v", this.ConnectTimeoutMs)+",\n")
+	s = append(s, "IntervalMs: "+fmt.Sprintf("%#v", this.IntervalMs)+",\n")
 	s = append(s, "}")
 	return strings.Join(s, "")
 }
@@ -434,11 +459,12 @@ func (this *HTTPCheck) GoString() string {
 	if this == nil {
 		return "nil"
 	}
-	s := make([]string, 0, 7)
+	s := make([]string, 0, 8)
 	s = append(s, "&models.HTTPCheck{")
 	s = append(s, "Port: "+fmt.Sprintf("%#v", this.Port)+",\n")
 	s = append(s, "RequestTimeoutMs: "+fmt.Sprintf("%#v", this.RequestTimeoutMs)+",\n")
 	s = append(s, "Path: "+fmt.Sprintf("%#v", this.Path)+",\n")
+	s = append(s, "IntervalMs: "+fmt.Sprintf("%#v", this.IntervalMs)+",\n")
 	s = append(s, "}")
 	return strings.Join(s, "")
 }
@@ -561,6 +587,11 @@ func (m *TCPCheck) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 	_ = i
 	var l int
 	_ = l
+	if m.IntervalMs != 0 {
+		i = encodeVarintCheckDefinition(dAtA, i, uint64(m.IntervalMs))
+		i--
+		dAtA[i] = 0x18
+	}
 	if m.ConnectTimeoutMs != 0 {
 		i = encodeVarintCheckDefinition(dAtA, i, uint64(m.ConnectTimeoutMs))
 		i--
@@ -594,6 +625,11 @@ func (m *HTTPCheck) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 	_ = i
 	var l int
 	_ = l
+	if m.IntervalMs != 0 {
+		i = encodeVarintCheckDefinition(dAtA, i, uint64(m.IntervalMs))
+		i--
+		dAtA[i] = 0x20
+	}
 	if len(m.Path) > 0 {
 		i -= len(m.Path)
 		copy(dAtA[i:], m.Path)
@@ -673,6 +709,9 @@ func (m *TCPCheck) Size() (n int) {
 	if m.ConnectTimeoutMs != 0 {
 		n += 1 + sovCheckDefinition(uint64(m.ConnectTimeoutMs))
 	}
+	if m.IntervalMs != 0 {
+		n += 1 + sovCheckDefinition(uint64(m.IntervalMs))
+	}
 	return n
 }
 
@@ -692,6 +731,9 @@ func (m *HTTPCheck) Size() (n int) {
 	if l > 0 {
 		n += 1 + l + sovCheckDefinition(uint64(l))
 	}
+	if m.IntervalMs != 0 {
+		n += 1 + sovCheckDefinition(uint64(m.IntervalMs))
+	}
 	return n
 }
 
@@ -735,6 +777,7 @@ func (this *TCPCheck) String() string {
 	s := strings.Join([]string{`&TCPCheck{`,
 		`Port:` + fmt.Sprintf("%v", this.Port) + `,`,
 		`ConnectTimeoutMs:` + fmt.Sprintf("%v", this.ConnectTimeoutMs) + `,`,
+		`IntervalMs:` + fmt.Sprintf("%v", this.IntervalMs) + `,`,
 		`}`,
 	}, "")
 	return s
@@ -747,6 +790,7 @@ func (this *HTTPCheck) String() string {
 		`Port:` + fmt.Sprintf("%v", this.Port) + `,`,
 		`RequestTimeoutMs:` + fmt.Sprintf("%v", this.RequestTimeoutMs) + `,`,
 		`Path:` + fmt.Sprintf("%v", this.Path) + `,`,
+		`IntervalMs:` + fmt.Sprintf("%v", this.IntervalMs) + `,`,
 		`}`,
 	}, "")
 	return s
@@ -1064,6 +1108,25 @@ func (m *TCPCheck) Unmarshal(dAtA []byte) error {
 					break
 				}
 			}
+		case 3:
+			if wireType != 0 {
+				return fmt.Errorf("proto: wrong wireType = %d for field IntervalMs", wireType)
+			}
+			m.IntervalMs = 0
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowCheckDefinition
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				m.IntervalMs |= uint64(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
 		default:
 			iNdEx = preIndex
 			skippy, err := skipCheckDefinition(dAtA[iNdEx:])
@@ -1184,6 +1247,25 @@ func (m *HTTPCheck) Unmarshal(dAtA []byte) error {
 			}
 			m.Path = string(dAtA[iNdEx:postIndex])
 			iNdEx = postIndex
+		case 4:
+			if wireType != 0 {
+				return fmt.Errorf("proto: wrong wireType = %d for field IntervalMs", wireType)
+			}
+			m.IntervalMs = 0
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowCheckDefinition
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				m.IntervalMs |= uint64(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
 		default:
 			iNdEx = preIndex
 			skippy, err := skipCheckDefinition(dAtA[iNdEx:])
diff --git a/models/check_definition.proto b/models/check_definition.proto
index ed3f633f..84a018da 100644
--- a/models/check_definition.proto
+++ b/models/check_definition.proto
@@ -21,10 +21,12 @@ message Check {
 message TCPCheck {
   uint32 port = 1 [(gogoproto.jsontag) = "port"];
   uint64 connect_timeout_ms = 2;
+  uint64 interval_ms = 3;
 }
 
 message HTTPCheck {
   uint32 port = 1 [(gogoproto.jsontag) = "port"];
   uint64 request_timeout_ms = 2;
   string path = 3 [(gogoproto.jsontag) = "path"];
+  uint64 interval_ms = 4;
 }