diff --git a/cache.go b/cache.go
index a6f37a409..7a400cf0f 100644
--- a/cache.go
+++ b/cache.go
@@ -314,19 +314,22 @@ func (p BitmapPairs) Less(i, j int) bool { return p[i].Count > p[j].Count }
 // Pair holds an id/count pair.
 type Pair struct {
 	ID    uint64 `json:"id"`
+	Key   string `json:"key"`
 	Count uint64 `json:"count"`
 }
 
 func encodePair(p Pair) *internal.Pair {
 	return &internal.Pair{
-		Key:   p.ID,
+		ID:    p.ID,
+		Key:   p.Key,
 		Count: p.Count,
 	}
 }
 
 func decodePair(pb *internal.Pair) Pair {
 	return Pair{
-		ID:    pb.Key,
+		ID:    pb.ID,
+		Key:   pb.Key,
 		Count: pb.Count,
 	}
 }
diff --git a/client_test.go b/client_test.go
index 8feec09ea..dfcc3072f 100644
--- a/client_test.go
+++ b/client_test.go
@@ -160,7 +160,7 @@ func TestClient_MultiNode(t *testing.T) {
 	// Check the results before every node has the correct max slice value.
 	pairs := result.Results[0].Pairs
 	for _, pair := range pairs {
-		if pair.Key == 22 && pair.Count != 3 {
+		if pair.ID == 22 && pair.Count != 3 {
 			t.Fatalf("Invalid Cluster wide MaxSlice prevents accurate calculation of %s", pair)
 		}
 	}
@@ -180,10 +180,10 @@ func TestClient_MultiNode(t *testing.T) {
 		t.Fatalf("unexpected number of TopN results: %s", spew.Sdump(result))
 	}
 	p := []*internal.Pair{
-		{Key: 100, Count: 12},
-		{Key: 22, Count: 11},
-		{Key: 98, Count: 8},
-		{Key: 99, Count: 7}}
+		{ID: 100, Count: 12},
+		{ID: 22, Count: 11},
+		{ID: 98, Count: 8},
+		{ID: 99, Count: 7}}
 
 	// Valdidate the Top 4 result counts.
 	if !reflect.DeepEqual(result.Results[0].Pairs, p) {
diff --git a/internal/public.pb.go b/internal/public.pb.go
index 2b39cf4fb..22afdc0f9 100644
--- a/internal/public.pb.go
+++ b/internal/public.pb.go
@@ -44,6 +44,7 @@ const _ = proto.ProtoPackageIsVersion2 // please upgrade the proto package
 
 type Bitmap struct {
 	Bits  []uint64 `protobuf:"varint,1,rep,packed,name=Bits" json:"Bits,omitempty"`
+	Keys  []string `protobuf:"bytes,3,rep,name=Keys" json:"Keys,omitempty"`
 	Attrs []*Attr  `protobuf:"bytes,2,rep,name=Attrs" json:"Attrs,omitempty"`
 }
 
@@ -59,6 +60,13 @@ func (m *Bitmap) GetBits() []uint64 {
 	return nil
 }
 
+func (m *Bitmap) GetKeys() []string {
+	if m != nil {
+		return m.Keys
+	}
+	return nil
+}
+
 func (m *Bitmap) GetAttrs() []*Attr {
 	if m != nil {
 		return m.Attrs
@@ -67,7 +75,8 @@ func (m *Bitmap) GetAttrs() []*Attr {
 }
 
 type Pair struct {
-	Key   uint64 `protobuf:"varint,1,opt,name=Key,proto3" json:"Key,omitempty"`
+	ID    uint64 `protobuf:"varint,1,opt,name=ID,proto3" json:"ID,omitempty"`
+	Key   string `protobuf:"bytes,3,opt,name=Key,proto3" json:"Key,omitempty"`
 	Count uint64 `protobuf:"varint,2,opt,name=Count,proto3" json:"Count,omitempty"`
 }
 
@@ -76,11 +85,18 @@ func (m *Pair) String() string            { return proto.CompactTextString(m) }
 func (*Pair) ProtoMessage()               {}
 func (*Pair) Descriptor() ([]byte, []int) { return fileDescriptorPublic, []int{1} }
 
-func (m *Pair) GetKey() uint64 {
+func (m *Pair) GetID() uint64 {
+	if m != nil {
+		return m.ID
+	}
+	return 0
+}
+
+func (m *Pair) GetKey() string {
 	if m != nil {
 		return m.Key
 	}
-	return 0
+	return ""
 }
 
 func (m *Pair) GetCount() uint64 {
@@ -148,6 +164,7 @@ func (m *Bit) GetTimestamp() int64 {
 
 type ColumnAttrSet struct {
 	ID    uint64  `protobuf:"varint,1,opt,name=ID,proto3" json:"ID,omitempty"`
+	Key   string  `protobuf:"bytes,3,opt,name=Key,proto3" json:"Key,omitempty"`
 	Attrs []*Attr `protobuf:"bytes,2,rep,name=Attrs" json:"Attrs,omitempty"`
 }
 
@@ -163,6 +180,13 @@ func (m *ColumnAttrSet) GetID() uint64 {
 	return 0
 }
 
+func (m *ColumnAttrSet) GetKey() string {
+	if m != nil {
+		return m.Key
+	}
+	return ""
+}
+
 func (m *ColumnAttrSet) GetAttrs() []*Attr {
 	if m != nil {
 		return m.Attrs
@@ -548,6 +572,21 @@ func (m *Bitmap) MarshalTo(dAtA []byte) (int, error) {
 			i += n
 		}
 	}
+	if len(m.Keys) > 0 {
+		for _, s := range m.Keys {
+			dAtA[i] = 0x1a
+			i++
+			l = len(s)
+			for l >= 1<<7 {
+				dAtA[i] = uint8(uint64(l)&0x7f | 0x80)
+				l >>= 7
+				i++
+			}
+			dAtA[i] = uint8(l)
+			i++
+			i += copy(dAtA[i:], s)
+		}
+	}
 	return i, nil
 }
 
@@ -566,16 +605,22 @@ func (m *Pair) MarshalTo(dAtA []byte) (int, error) {
 	_ = i
 	var l int
 	_ = l
-	if m.Key != 0 {
+	if m.ID != 0 {
 		dAtA[i] = 0x8
 		i++
-		i = encodeVarintPublic(dAtA, i, uint64(m.Key))
+		i = encodeVarintPublic(dAtA, i, uint64(m.ID))
 	}
 	if m.Count != 0 {
 		dAtA[i] = 0x10
 		i++
 		i = encodeVarintPublic(dAtA, i, uint64(m.Count))
 	}
+	if len(m.Key) > 0 {
+		dAtA[i] = 0x1a
+		i++
+		i = encodeVarintPublic(dAtA, i, uint64(len(m.Key)))
+		i += copy(dAtA[i:], m.Key)
+	}
 	return i, nil
 }
 
@@ -672,6 +717,12 @@ func (m *ColumnAttrSet) MarshalTo(dAtA []byte) (int, error) {
 			i += n
 		}
 	}
+	if len(m.Key) > 0 {
+		dAtA[i] = 0x1a
+		i++
+		i = encodeVarintPublic(dAtA, i, uint64(len(m.Key)))
+		i += copy(dAtA[i:], m.Key)
+	}
 	return i, nil
 }
 
@@ -1143,18 +1194,28 @@ func (m *Bitmap) Size() (n int) {
 			n += 1 + l + sovPublic(uint64(l))
 		}
 	}
+	if len(m.Keys) > 0 {
+		for _, s := range m.Keys {
+			l = len(s)
+			n += 1 + l + sovPublic(uint64(l))
+		}
+	}
 	return n
 }
 
 func (m *Pair) Size() (n int) {
 	var l int
 	_ = l
-	if m.Key != 0 {
-		n += 1 + sovPublic(uint64(m.Key))
+	if m.ID != 0 {
+		n += 1 + sovPublic(uint64(m.ID))
 	}
 	if m.Count != 0 {
 		n += 1 + sovPublic(uint64(m.Count))
 	}
+	l = len(m.Key)
+	if l > 0 {
+		n += 1 + l + sovPublic(uint64(l))
+	}
 	return n
 }
 
@@ -1197,6 +1258,10 @@ func (m *ColumnAttrSet) Size() (n int) {
 			n += 1 + l + sovPublic(uint64(l))
 		}
 	}
+	l = len(m.Key)
+	if l > 0 {
+		n += 1 + l + sovPublic(uint64(l))
+	}
 	return n
 }
 
@@ -1523,6 +1588,35 @@ func (m *Bitmap) Unmarshal(dAtA []byte) error {
 				return err
 			}
 			iNdEx = postIndex
+		case 3:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field Keys", wireType)
+			}
+			var stringLen uint64
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowPublic
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				stringLen |= (uint64(b) & 0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			intStringLen := int(stringLen)
+			if intStringLen < 0 {
+				return ErrInvalidLengthPublic
+			}
+			postIndex := iNdEx + intStringLen
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			m.Keys = append(m.Keys, string(dAtA[iNdEx:postIndex]))
+			iNdEx = postIndex
 		default:
 			iNdEx = preIndex
 			skippy, err := skipPublic(dAtA[iNdEx:])
@@ -1575,9 +1669,9 @@ func (m *Pair) Unmarshal(dAtA []byte) error {
 		switch fieldNum {
 		case 1:
 			if wireType != 0 {
-				return fmt.Errorf("proto: wrong wireType = %d for field Key", wireType)
+				return fmt.Errorf("proto: wrong wireType = %d for field ID", wireType)
 			}
-			m.Key = 0
+			m.ID = 0
 			for shift := uint(0); ; shift += 7 {
 				if shift >= 64 {
 					return ErrIntOverflowPublic
@@ -1587,7 +1681,7 @@ func (m *Pair) Unmarshal(dAtA []byte) error {
 				}
 				b := dAtA[iNdEx]
 				iNdEx++
-				m.Key |= (uint64(b) & 0x7F) << shift
+				m.ID |= (uint64(b) & 0x7F) << shift
 				if b < 0x80 {
 					break
 				}
@@ -1611,6 +1705,35 @@ func (m *Pair) Unmarshal(dAtA []byte) error {
 					break
 				}
 			}
+		case 3:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field Key", wireType)
+			}
+			var stringLen uint64
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowPublic
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				stringLen |= (uint64(b) & 0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			intStringLen := int(stringLen)
+			if intStringLen < 0 {
+				return ErrInvalidLengthPublic
+			}
+			postIndex := iNdEx + intStringLen
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			m.Key = string(dAtA[iNdEx:postIndex])
+			iNdEx = postIndex
 		default:
 			iNdEx = preIndex
 			skippy, err := skipPublic(dAtA[iNdEx:])
@@ -1906,6 +2029,35 @@ func (m *ColumnAttrSet) Unmarshal(dAtA []byte) error {
 				return err
 			}
 			iNdEx = postIndex
+		case 3:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field Key", wireType)
+			}
+			var stringLen uint64
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowPublic
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				stringLen |= (uint64(b) & 0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			intStringLen := int(stringLen)
+			if intStringLen < 0 {
+				return ErrInvalidLengthPublic
+			}
+			postIndex := iNdEx + intStringLen
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			m.Key = string(dAtA[iNdEx:postIndex])
+			iNdEx = postIndex
 		default:
 			iNdEx = preIndex
 			skippy, err := skipPublic(dAtA[iNdEx:])
@@ -3434,46 +3586,47 @@ var (
 func init() { proto.RegisterFile("public.proto", fileDescriptorPublic) }
 
 var fileDescriptorPublic = []byte{
-	// 651 bytes of a gzipped FileDescriptorProto
-	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xac, 0x54, 0xcb, 0x6e, 0xd3, 0x40,
-	0x14, 0x65, 0x62, 0xe7, 0x75, 0x93, 0x56, 0xd5, 0x08, 0x8a, 0x85, 0x50, 0x14, 0x59, 0x2c, 0xbc,
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-	0x00, 0xff, 0xff, 0x4d, 0x1e, 0xdf, 0xba, 0xb0, 0x05, 0x00, 0x00,
+	// 671 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xac, 0x54, 0xbb, 0x6e, 0xd4, 0x40,
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+	0x83, 0xbd, 0x8c, 0x64, 0xe9, 0x30, 0xd7, 0xf2, 0x6d, 0x54, 0x67, 0xfe, 0x08, 0xfa, 0xcf, 0xa4,
+	0x2c, 0x4a, 0xa7, 0xe7, 0x5a, 0xfe, 0x64, 0xb1, 0x3d, 0x37, 0xef, 0xe6, 0x44, 0xa3, 0x16, 0xe9,
+	0xe5, 0xb1, 0x58, 0x97, 0x8e, 0xe5, 0x5a, 0xfe, 0x18, 0xd5, 0xd9, 0x7b, 0x02, 0xf6, 0x8b, 0x30,
+	0x2a, 0xf8, 0x36, 0xf4, 0x82, 0x03, 0x87, 0xb9, 0xcc, 0xb7, 0xb1, 0x17, 0x1c, 0xf0, 0xbb, 0xd0,
+	0xdf, 0xcf, 0xaa, 0x54, 0x3a, 0x3d, 0x45, 0x69, 0xc0, 0x77, 0xc0, 0x3a, 0x16, 0x6b, 0xc7, 0x72,
+	0x99, 0x3f, 0x46, 0x3a, 0x7a, 0x0b, 0x18, 0xad, 0xaa, 0xa4, 0x51, 0x57, 0x55, 0xa2, 0x82, 0x58,
+	0x48, 0xc7, 0xcd, 0x28, 0x56, 0x1d, 0xc5, 0x7b, 0x05, 0xd6, 0x32, 0x92, 0x24, 0x62, 0xf6, 0xae,
+	0xf9, 0xaa, 0x06, 0xfc, 0x01, 0x8c, 0xf6, 0xb3, 0xb8, 0x4a, 0xd2, 0xe0, 0xa0, 0xfe, 0x76, 0x83,
+	0xf9, 0x43, 0x18, 0x9f, 0x46, 0x89, 0x28, 0x65, 0x98, 0xe4, 0x2a, 0x09, 0x0b, 0x5b, 0xc2, 0x7b,
+	0x0d, 0x5b, 0xfa, 0x26, 0x55, 0xbb, 0x12, 0xf2, 0x56, 0x4d, 0xff, 0xd6, 0xa5, 0xdb, 0x35, 0x7e,
+	0x66, 0x60, 0x93, 0x66, 0x24, 0xd6, 0x48, 0xd4, 0xd2, 0xd3, 0x75, 0x2e, 0xea, 0x4c, 0xd5, 0x99,
+	0xbb, 0x30, 0x59, 0xc9, 0x22, 0x4a, 0xaf, 0xce, 0xc2, 0xb8, 0x12, 0x75, 0xa0, 0x2e, 0x45, 0x35,
+	0x06, 0xa9, 0xd4, 0xb2, 0xad, 0xca, 0x68, 0x30, 0xd5, 0xb8, 0xcc, 0xb2, 0x58, 0x8b, 0x7d, 0x97,
+	0xf9, 0x23, 0x6c, 0x09, 0x3e, 0x03, 0x38, 0x8a, 0xb3, 0xb0, 0x7e, 0x3b, 0x70, 0x99, 0xcf, 0xb0,
+	0xc3, 0x78, 0x7b, 0x30, 0xa4, 0x4c, 0x9f, 0x87, 0x79, 0x5b, 0x2d, 0xfb, 0x43, 0xb5, 0xde, 0x57,
+	0x06, 0xd3, 0x97, 0x95, 0x28, 0xd6, 0x28, 0xde, 0x56, 0xa2, 0x54, 0x53, 0x51, 0xb8, 0xae, 0x52,
+	0x03, 0xbe, 0x0b, 0x83, 0x55, 0x1c, 0x5d, 0x08, 0xdd, 0x3b, 0x1b, 0x6b, 0x44, 0xb5, 0xb6, 0x3d,
+	0x2f, 0x55, 0xad, 0x23, 0xec, 0x52, 0xf4, 0x12, 0x45, 0x92, 0x49, 0x53, 0x4c, 0x8d, 0xb8, 0x07,
+	0xd3, 0xc3, 0xeb, 0x8b, 0xb8, 0xba, 0x14, 0xfa, 0xe9, 0x40, 0xa9, 0x1b, 0x1c, 0x45, 0xaf, 0xb1,
+	0x72, 0xfc, 0x50, 0x47, 0xef, 0x50, 0xde, 0x7b, 0x06, 0x5b, 0x75, 0xfa, 0x65, 0x9e, 0xa5, 0xa5,
+	0xa0, 0x19, 0x1d, 0x16, 0x85, 0x99, 0xd1, 0x61, 0x51, 0xf0, 0x3d, 0x18, 0xa2, 0x28, 0xab, 0x58,
+	0x9a, 0xc1, 0xdf, 0x6b, 0x5b, 0x61, 0xde, 0x56, 0xb1, 0x44, 0x73, 0x8b, 0x3f, 0x85, 0xed, 0x0d,
+	0x23, 0xe9, 0x8d, 0x99, 0x2c, 0xee, 0xb7, 0xef, 0x36, 0x74, 0xfc, 0xed, 0xba, 0xf7, 0x85, 0xc1,
+	0xa4, 0x13, 0x99, 0xfb, 0x66, 0x79, 0x55, 0x5a, 0x93, 0xc5, 0x4e, 0x1b, 0x48, 0xf3, 0x68, 0x96,
+	0x7b, 0x0a, 0xec, 0xa4, 0x36, 0x13, 0x3b, 0xa1, 0x11, 0xd2, 0x72, 0x9a, 0xef, 0x77, 0x46, 0x48,
+	0x34, 0x6a, 0x91, 0x3b, 0x30, 0xdc, 0x7f, 0x13, 0xa6, 0x57, 0xe2, 0x52, 0x99, 0x69, 0x84, 0x06,
+	0xf2, 0x79, 0xbb, 0x9c, 0xaa, 0xfb, 0x93, 0x05, 0x6f, 0x43, 0x18, 0x05, 0x9b, 0x3b, 0xde, 0x27,
+	0x06, 0x5b, 0x41, 0x92, 0x67, 0x85, 0xec, 0xb8, 0x21, 0x48, 0x2f, 0xc5, 0xb5, 0x71, 0x83, 0x02,
+	0xc4, 0x1e, 0x15, 0x61, 0xa2, 0x6d, 0x3f, 0x46, 0x0d, 0x88, 0x55, 0xae, 0x50, 0x2e, 0xb0, 0x51,
+	0x03, 0x35, 0x7f, 0x5a, 0xec, 0xd2, 0xb1, 0xb5, 0x73, 0x34, 0x22, 0x9f, 0x9b, 0xbd, 0x2e, 0x9d,
+	0xbe, 0x92, 0x5a, 0x82, 0x7c, 0xde, 0x2c, 0x36, 0x79, 0xc3, 0xf2, 0x2d, 0xec, 0x30, 0xde, 0x47,
+	0x06, 0x5c, 0x67, 0xaa, 0x7c, 0xff, 0xff, 0xd2, 0xa5, 0xbb, 0x91, 0x88, 0x75, 0x2b, 0xe9, 0x2e,
+	0x81, 0xbf, 0x24, 0xbb, 0x0b, 0x03, 0x95, 0x85, 0x49, 0xb4, 0x46, 0xcb, 0x9d, 0x6f, 0x37, 0x33,
+	0xf6, 0xfd, 0x66, 0xc6, 0x7e, 0xdc, 0xcc, 0xd8, 0x87, 0x9f, 0xb3, 0x3b, 0xe7, 0x03, 0xf5, 0x5b,
+	0x7f, 0xfc, 0x2b, 0x00, 0x00, 0xff, 0xff, 0x0f, 0xf2, 0x1f, 0x86, 0xe6, 0x05, 0x00, 0x00,
 }
diff --git a/internal/public.proto b/internal/public.proto
index 47b04d8e7..025b50baa 100644
--- a/internal/public.proto
+++ b/internal/public.proto
@@ -4,11 +4,13 @@ package internal;
 
 message Bitmap {
 	repeated uint64 Bits = 1;
+	repeated string Keys = 3;
 	repeated Attr Attrs = 2;
 }
 
 message Pair {
-	uint64 Key = 1;
+	uint64 ID = 1;
+	string Key = 3;
 	uint64 Count = 2;
 }
 
@@ -25,6 +27,7 @@ message Bit {
 
 message ColumnAttrSet {
 	uint64 ID = 1;
+	string Key = 3;
 	repeated Attr Attrs = 2;
 }
 
diff --git a/server/server_test.go b/server/server_test.go
index 70c415ba4..4b8ad01c5 100644
--- a/server/server_test.go
+++ b/server/server_test.go
@@ -614,8 +614,6 @@ func (m *Main) Reopen() error {
 	m.Server.Network = *test.Network
 	m.Config = config
 
-	println("dbg/network", *test.Network)
-
 	// Run new program.
 	if err := m.Run(); err != nil {
 		return err