id	title	custom_edit_url
state_sync	State Synchronizer	https://github.com/diem/diem/edit/master/state-synchronizer/README.md

State Synchronizer

The State Synchronizer is the component that helps nodes advance its local ledger state by requesting chunks of transactions from peers that have more up-to-date state. A node sends a chunk request to its peer, and the peers responds with data that helps the node advance its local state.

Overview

Refer to the state synchronizer specifications for a high-level overview.

Implementation Details

This crate contains an implemented instance of the specifications for a DiemNet state synchronizer.

• chunk_request & chunk_response: definitions/implementation of state sync DiemNet messages
• coordinator: the main runtime that processes messages from consensus or DiemNet State Synchronizer network protocol
• executor_proxy: interface b/w state sync and storage/execution
• request_manager: actor that handles managing per-peer information and sending chunk requests to advance local state based on per-peer info or network health
• synchronizer: interface that manages state sync's interactions with consensus

How is this module organized?

state-synchronizer
|- src
   |-- tests/                  # Unit/integration tests
   |-- chunk_request           # `GetChunkRequest` implementation
   |-- chunk_response          # `GetChunkResponse` implementation
   |-- coordinator             # coordinator-related code - see above for description
   |-- counters                # metrics
   |-- executor_proxy          # interface b/w state sync and storage/execution
   |-- logging                 # logging, for observability
   |-- network                 # interface with networking
   |-- request_manager         # request_manager code - see above
   |-- synchronizer            # synchronizer code - see above