Update README.md

README.md

@@ -14,11 +14,19 @@ A Raft implementation in Rust language. To support this project please give it a
 
 ![multi-raft](https://github.com/akiradeveloper/lol/assets/785824/2293cf2b-436a-45ed-a507-88e299e622bf)
 
-- Implements all basic [Raft](https://raft.github.io/) features: Replication, Leader Election, Log Compaction, Persistency, Dynamic Membership Change, Streaming Snapshot, etc.
+- Implements all fundamental [Raft](https://raft.github.io/) features for production use.
 - Supports Multi-Raft. Mutliple Raft processes can coexist in a single OS process so they can share resources efficiently.
 - Based on [Tonic](https://github.com/hyperium/tonic) and efficient gRPC streaming is exploited in log replication and snapshot.
 - [Phi Accrual Failure Detector](https://github.com/akiradeveloper/phi-detector) is used for leader failure detection. The adaptive algorithm allows you to not choose a fixed timeout number in prior to deployment and makes it possible to deploy Raft node in even Geo-distributed environment.
 
+## Architecture
+
+To implement Multi-Raft, the architecture is divided into two spaces. One in the lower side is called "Pure Raft" layer which is totally unaware of 
+gRPC and Multi-Raft. Therefore, called pure. The other side translates gRPC requests into pure requests and vice versa.
+
+![lol2 (1)](https://github.com/akiradeveloper/lol/assets/785824/dc605ed9-ca90-4e17-a370-ca1b939e43ce)
+
+
 ## Development
 
 - `docker compose build` to build test servers.