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# What is GRPC ?

Grpc is one of the open source framework that was developed by Google. It used for communication between service like **REST.** It use **Protocol buffer** in part of data serialization and code generation.

**Protocol Buffer**

Protocol Buffers are language-neutral, platform-neutral extensible mechanisms for serializing structured data. This format will be used to generate the interface for development.\
\
**The Advantage**

1. Using HTTP 2
2. the data that will be sent is binary (light) so it will has good performance more than REST . Both REST and gRPC support binary data transmission. However, in REST, data is typically sent in JSON format, which is text-based and requires conversion to binary using techniques like Base64 encoding. On the other hand, gRPC uses Protocol Buffers, a binary serialization format, by default. This results in more efficient data transmission compared to REST.
3. The communction is ***Unary Client-Request or Bidirectional/Streaming*** but REST is ***Client-Request Only**.*
4. Have  own built-in code generation

**Drawbacks**

1. Not support browser, It mean you can use for the communication between service and service (BE to BE) 
2. Take so much time in implementation


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