RPC protocols like SOAP, XML-RPC, JSON-RPC, and Thrift allow for remote procedure calls between a client and server. RPC works by having a client call an RPC function, which then calls the service and executes the request. The service returns a reply and the program continues. Interface layers can be high-level existing API calls, middle-level custom API calls generated by a compiler, or low-level direct RPC API calls. Popular data formats used include XML, JSON, HTTP, and TCP/IP. Thrift is an open-source protocol developed by Facebook that supports many programming languages. It generates stubs for easy client-server communication. Avro and Protocol Buffers also generate stubs and are supported by languages like

1. RPC Protocols
HAN O SEOK

2. RPC
• Remote Procedure Calls
• Client-Server based Application

3. History
• Xerox - Courier
• Apollo Computer - Network Computing
Architecture
• RPC ver. 1 (RFC 1050)
• RPC ver. 2 (RFC 5531)

4. How Works
Client Server
call rpc function
call service
service executes
request completes
return reply
progrma continues
execute requests

5. RPC Protocols
SOAP
XML-RPC
JSON-RPC
MSMQ
DTC
RMIThrift
Protocol Buffers
AVRO
.NET Remoting
CORBA
Pyro
DRb

6. Interface Layer
• High Level Layer - Existed API Call
• Middle Level Layer - Create API By rpcgen
Compiler
• Low Level Layer - Create RCP API

7. Network Layer & Data
XML ETC JSON
HTTP SOAP
XML-RPC
XML-JSON
avro
TCP/IP thrift
ProtoBuf
thrift
avro
Named
Pipe
IPX

8. XML-RPC
• HTTP Based POST Request
• Contents of Large Size
• Easy Implementation

9. Thrift
• Facebook (By X-Googler)
• Numbers of Language Support
C++, C#, Java, Erlang, Haskell, Objective C,
Perl, PHP, Python, Ruby, Squeak
Javascript, Node.js, Smalltalk, OCaml

10. Thrift on Java
• Ivy (http://ant.apache.org/ivy/)
• lib-thrift
• Support Thrift Server & Client

11. Thrift Type
• Base Types
boolean, byte, i16, i32, i64 (Signed Integer)
double, string
• Structs
• Containers
list, set, map
• Exceptions
• Services

12. Thrift Stub Example

13. Thrift Stub Example

14. Thrift Stub Example

15. Thrift Request
• JSONProtocol
[1,”hello”,1,2,{“1”:”str”:hanoseok”}}]
• SimpleJSONProtocol
[“hello”,1,1,{“name”:”hanoseok”}]
• CompactProtocol
?hellohanoseok
• BinaryProtocol

16. Avro
• HTTP, UDP,TCP Supports
• JSON
• Support Languages
C, C++, Java, Python, Ruby, PHP

17. Avro differs
• Dynamic Typing - without code generation
• Untagged data - smaller serialization size by
less type information

18. Avro Files
• .avpr : Protocol File
• .avsc : Schema File
• .genavro : Generate Avro File

19. Avro Stub Example
• Create Protocol File Using genavro File

20. Avro Stub Example
• Create Java Stup Using Protocol File

21. Avro Stub Example

22. Protocol Buffers
• ProtoBuf Runtime Only provides
serialization and deserialization
• Just generate STUB
• Support Languages : C++, Java, Python

23. ProtoBuf Stub Example

24. ProtoBuf Stub Example

25. • Thrift
Cassandra, HBase, Evernote API, Facebook
• Avro
Cassandra, HBase
• Protocol Buffers
Google Data Communications,
Google App Engine
USING

26. Comparison
• Language Support :
Thrift > Avro >ProtoBuf
• Scalability :
ProtoBuf > Thrift > Avro
• (De)Serialization Speed :
thrift >= ProtoBuf >= Avro
• Documenation :
ProtoBuf > Avro = Thrift

27. Performance
• https://github.com/eishay/jvm-serializers/wiki/

28. Thanks