# sunkadshreyas/kvstore architecture

> Architecture diagram of the GitHub repository sunkadshreyas/kvstore, generated by GitDiagram from its file tree, README and a sample of source files (last updated 2026-09-26). It is an AI-made overview: check details against the source.

- Interactive diagram: https://gitdiagram.com/sunkadshreyas/kvstore
- Repository: https://github.com/sunkadshreyas/kvstore

## Overview

KVStore is presented as a fault-tolerant key-value service built on Raft, with leader election, log replication, and compaction. The available application and Raft files are startup-printing stubs, so the documented service workflow and Raft stages cannot be traced or connected from source. The sampled RPC layer does implement request dispatch and uses labgob for serialization; no HTTP server or persistent store is shown.

Main entry points: [`raft/raft.go`](https://github.com/sunkadshreyas/kvstore/blob/main/raft/raft.go) (Raft layer), [`labrpc/labrpc.go`](https://github.com/sunkadshreyas/kvstore/blob/main/labrpc/labrpc.go) (RPC network), [`labgob/labgob.go`](https://github.com/sunkadshreyas/kvstore/blob/main/labgob/labgob.go) (Gob codec), [`kvraft/main.go`](https://github.com/sunkadshreyas/kvstore/blob/main/kvraft/main.go) (KV entry stub)

## Diagram (Mermaid)

```mermaid
flowchart TD

subgraph group_app["KV application"]
  node_kv_entry["KV entry stub<br/>[main.go]"]
  node_kv_service["Key-value service<br/>[main.go]"]
end

subgraph group_consensus["Consensus"]
  node_raft["Raft layer<br/>[raft.go]"]
  node_election["Leader election<br/>[raft.go]"]
  node_replication["Log replication<br/>[raft.go]"]
  node_compaction["Log compaction<br/>[raft.go]"]
end

subgraph group_rpc["RPC support"]
  node_rpc_network["RPC network<br/>[labrpc.go]"]
  node_rpc_dispatch["RPC dispatch<br/>[labrpc.go]"]
  node_codec["Gob codec<br/>[labgob.go]"]
end

node_operator(("Operator"))

node_operator -->|"starts"| node_kv_entry
node_kv_entry -.->|"intended entry"| node_kv_service
node_kv_service -.->|"documented use"| node_raft
node_raft -.->|"documents"| node_election
node_raft -.->|"documents"| node_replication
node_raft -.->|"documents"| node_compaction
node_rpc_network -->|"dispatches"| node_rpc_dispatch
node_rpc_network -->|"encodes requests"| node_codec
node_rpc_network -->|"decodes replies"| node_codec
node_rpc_dispatch -->|"encodes replies"| node_codec

click node_kv_entry "https://github.com/sunkadshreyas/kvstore/blob/main/kvraft/main.go"
click node_kv_service "https://github.com/sunkadshreyas/kvstore/blob/main/kvraft/main.go"
click node_raft "https://github.com/sunkadshreyas/kvstore/blob/main/raft/raft.go"
click node_election "https://github.com/sunkadshreyas/kvstore/blob/main/raft/raft.go"
click node_replication "https://github.com/sunkadshreyas/kvstore/blob/main/raft/raft.go"
click node_compaction "https://github.com/sunkadshreyas/kvstore/blob/main/raft/raft.go"
click node_rpc_network "https://github.com/sunkadshreyas/kvstore/blob/main/labrpc/labrpc.go"
click node_rpc_dispatch "https://github.com/sunkadshreyas/kvstore/blob/main/labrpc/labrpc.go"
click node_codec "https://github.com/sunkadshreyas/kvstore/blob/main/labgob/labgob.go"

classDef toneNeutral fill:#f8fafc,stroke:#334155,stroke-width:1.5px,color:#0f172a
classDef toneBlue fill:#dbeafe,stroke:#2563eb,stroke-width:1.5px,color:#172554
classDef toneAmber fill:#fef3c7,stroke:#d97706,stroke-width:1.5px,color:#78350f
classDef toneMint fill:#dcfce7,stroke:#16a34a,stroke-width:1.5px,color:#14532d
classDef toneRose fill:#ffe4e6,stroke:#e11d48,stroke-width:1.5px,color:#881337
classDef toneIndigo fill:#e0e7ff,stroke:#4f46e5,stroke-width:1.5px,color:#312e81
classDef toneTeal fill:#ccfbf1,stroke:#0f766e,stroke-width:1.5px,color:#134e4a
class node_kv_entry,node_kv_service toneBlue
class node_raft,node_election,node_replication,node_compaction toneAmber
class node_rpc_network,node_rpc_dispatch,node_codec toneMint
class node_operator toneIndigo
```

## Components

### KV application

- [KV entry stub](https://github.com/sunkadshreyas/kvstore/blob/main/kvraft/main.go): `kvraft/main.go`
- [Key-value service](https://github.com/sunkadshreyas/kvstore/blob/main/kvraft/main.go): `kvraft/main.go`

### Consensus

- [Raft layer](https://github.com/sunkadshreyas/kvstore/blob/main/raft/raft.go): `raft/raft.go`
- [Leader election](https://github.com/sunkadshreyas/kvstore/blob/main/raft/raft.go): `raft/raft.go`
- [Log replication](https://github.com/sunkadshreyas/kvstore/blob/main/raft/raft.go): `raft/raft.go`
- [Log compaction](https://github.com/sunkadshreyas/kvstore/blob/main/raft/raft.go): `raft/raft.go`

### RPC support

- [RPC network](https://github.com/sunkadshreyas/kvstore/blob/main/labrpc/labrpc.go): `labrpc/labrpc.go`
- [RPC dispatch](https://github.com/sunkadshreyas/kvstore/blob/main/labrpc/labrpc.go): `labrpc/labrpc.go`
- [Gob codec](https://github.com/sunkadshreyas/kvstore/blob/main/labgob/labgob.go): `labgob/labgob.go`

### Other components

- **Operator**

## Connections

- Operator → KV entry stub: starts
- KV entry stub → Key-value service: intended entry
- Key-value service → Raft layer: documented use
- Raft layer → Leader election: documents
- Raft layer → Log replication: documents
- Raft layer → Log compaction: documents
- RPC network → RPC dispatch: dispatches
- RPC network → Gob codec: encodes requests
- RPC network → Gob codec: decodes replies
- RPC dispatch → Gob codec: encodes replies