Cosmos Concepts

Monday. January 01, 2024 - 1 min

A Blockchain App Architecture

flowchart LR
    A[Cosmos SDK Application Architecture] --> B[Tendermint and CometBFT]
    B --> C[Consensus with CometBFT]
    B --> D[Application Blockchain Interface ABCI]
    B --> E[Cosmos SDK]
    B --> F[State Machines]
    
    C --> G[High-performance Consensus Module]
    C --> H[Proof-of-Stake with Delegation]
    C --> I[Transaction Finalization Process]
    
    D --> J[Socket Protocol for Applications]
    D --> K[Security Guarantees]
    
    E --> L[Development Framework]
    E --> M[Inter-Blockchain Communication Protocol IBC]
    
    F --> N[Replicated State Machine]
    F --> O[State Transition Function]
    
    A --> P[Upgradeability of Chains]
    A --> Q[Additional Details]

ABCI

flowchart TD 

    A[CometBFT] --> B[Networking Layer]  
    I[Application Process]  -- ABCI --> A
    A --> C[Consensus Layer/Consensus Engine Process]  
    B --> E[Peer Discovery]  
    B --> F[Validator Selection]  
    C -- controls --> H[State Machine]  
    C --> J[Staking]  
    C --> K[Upgrades]  

flowchart LR
    Q[Additional Details]
    Q --> A[CheckTx]
    Q --> B[DeliverTx]
    Q --> C[BeginBlock]
    C --ABCI--> F[CometBFT]
    D -- ABCI--> F[CometBFT]
    Q --> D[EndBlock]

• checkTx: ask the application layer if a transaction is valid.
• deliverTx: state machine transition
• beginBlock & endBlock:

设计程序

设计一个下棋项目, 玩家可以互相对弈, 使用最简单的规则. 目的是理解abci和学习如何使用cosmos-sdk, 不要被游戏规则和实现逻辑绕进去了(那不是重点).

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