Two-Phase Commit (2PC) in Microservice Architecture 📌 Objective

This project demonstrates how to implement and simulate a distributed transaction using the Two-Phase Commit (2PC) protocol across three microservices:

Order Service (localhost:8081)

Payment Service (localhost:8082)

Coordinator Service (localhost:8080)

🏗️ Architecture Overview

1. Order Service

   Manages order placement.

   Exposes:

    POST /prepare_order
   
    POST /commit_order
   
    POST /rollback_order
   

2. Payment Service

   Handles payment processing.

   Exposes:

    POST /prepare_payment
   
    POST /commit_payment
   
    POST /rollback_payment
   

3. Coordinator Service

   Orchestrates the 2PC protocol.

   Steps:

    Sends prepare to services.
   
    If all succeed, sends commit.
   
    If any fail, sends rollback