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Data TypeGeode Region Key TypesType IdValueSerialized BytesDescription
Null 41 = 0x29null
typeId0x29
 
Boolean YES53 = 0x35true
typeId0x35
bytes0x01
 
Character YES54 = 0x36'a'
typeId0x36
bytes

0x00 0x61

 
Byte YES55 = 0x371
typeId0x37
bytes0x01
 
Short YES56 = 0x381000
typeId0x38
bytes0x03 0xE8
 
Integer YES57 = 0x391000
typeId0x39
bytes0x00 0x00 0x03 0xE8
 
Long YES58 = 0x3A1000
typeId0x3A
bytes0x00 0x00 0x00 0x00 0x00 0x00 0x03 0xE8
 
Float YES59 = 0x3B1000f
typeId0x3B
bytes

0x44 0x7A 0x00 0x00

 
Double YES60 = 0x3C1000d



typeId0x3C
bytes

0x40 0xF1 0x40 0x00 0x00 0x00 0x00 0x00

 
ASCII_STRINGYES87 = 0x57"hello"
typeid0x57
len0x00 0x05
bytes0x68 0x65 0x40 0x40 0x6F
This represents ASCII string with maximum length 0xFFFF. Code snippet to serialize and deserialize the string.
UTF_STRING YES42 = 0x2A  This represents UTF string with maximum length 0xFFFF. Code snippet to serialize and deserialize the string.
HUGE_ASCII_STRING YES88 = 0x58  This represents ASCII string with length greater than 0xFFFF. Code snippet to serialize and deserialize the string.
HUGE_UTF_STRING YES89 = 0x59  This represents UTF string with length greater than 0xFFFF. Code snippet to serialize and deserialize the string.
byte[] YES (This we plan to support)46 = 0x2Ebyte[] {1,2}
typeId0x2E
len0x02
bytes0x01 0x02
 
short[] 47 = 0x2Fshort[] {1,2}
typeId0x2F
len 0x02
bytes

0x00 0x01 0x00 0x02

 
int[] 48 = 0x30int[] {1,2}
typeId0x30
len 0x02
bytes

0x00 0x00 0x00 0x01 0x00 0x00 0x00 0x02

 
long[] 49 = 0x31long[] {1}
typeId0x31
len 0x01
bytes

0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x01

 
float[] 50 = 0x32float[] {2.0f}
typeId0x32
len 0x01
bytes

0x40 0x00 0x00 0x00

 
double[] 51 = 0x33double[] {2.0d}
typeId0x33
len0x01
bytes

0x40 0x00 0x00 0x00 0x00 0x00 0x00 0x00

 
string[] 64 = 0x40 String[]{"hello", "world"}
typeId0x40
len 0x02

"hello"

bytes

0x57 - ASCII_STRING

0x00 0x05

0x68 0x65 0x6c 0x6c 0x6f

 

"world"

bytes

0x57 -  ASCII_STRING

0x00 0x05 - len

0x77 0x6f 0x72 0x6c 0x64


 
Map 67 = 0x43

Map s = new HashMap<>();

 s.put("hello", "world")

typeId0x43
len 0x01

"hello"

bytes

0x57 - ASCII_STRING

0x00 0x05

0x68 0x65 0x6c 0x6c 0x6f

 

"world"

bytes

0x57 -  ASCII_STRING

0x00 0x05 - len

0x77 0x6f 0x72 0x6c 0x64

 
Set 66 = 0x42

Set s = new HashSet();

 s.add("hello");

s.add("world");


typeId0x42
len 0x02

"hello"

bytes

0x57 - ASCII_STRING

0x00 0x05

0x68 0x65 0x6c 0x6c 0x6f

"world"

bytes

0x57 -  ASCII_STRING

0x00 0x05 - len

0x77 0x6f 0x72 0x6c 0x64

 
List 10 = 0x0a

List s = new LinkedList();
s.add("hello");
s.add("world");

typeId0x0a
len 0x02

"hello"

bytes

0x57 - ASCII_STRING

0x00 0x05

0x68 0x65 0x6c 0x6c 0x6f

"world"

bytes

0x57 -  ASCII_STRING

0x00 0x05 - len

0x77 0x6f 0x72 0x6c 0x64

 
ArrayList 65=0x41

List s = new ArrayList();
s.add("hello");
s.add("world");

typeId0x41
len 0x02

"hello"

bytes

0x57 - ASCII_STRING

0x00 0x05

0x68 0x65 0x6c 0x6c 0x6f

"world"

bytes

0x57 -  ASCII_STRING

0x00 0x05 - len

0x77 0x6f 0x72 0x6c 0x64

 
PDX_SERIALIZATION 93=0x5D  Java Object can implement PdxSerializable interface to serialize data in pdx format
PDX_SERIALIZER    

The application can implement PdxSerializer interface and then install with geode cache

to serialize data in pdx format.

DATA_SERIALIZATION     Java Object can implement DataSerializable interface to serialize data.
USER_SERIALIZATION     

The application can implement DataSerializer interface and then install with geode cache

to serialize data.

JAVA_SERIALIZATIOn44= 0x2C 

Key Data Types

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Calculate Collection/Array Size

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