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Microservices patterns

Service boundaries, discovery, inter-service calls, and decomposition patterns.

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How to Implement a Two-Phase Commit Mock in Python

Simulate a distributed two-phase commit with prepare, commit, and abort phases, including deterministic failure injection for testing.

2pc transaction microservices
Python 
import random
from dataclasses import dataclass
from typing import Dict, List, Optional


@dataclass
class Transaction:
    tx_id: int
    data: Dict[str, str]


class TwoPhaseCommitMock:
    """Simple two-phase commit mock with prepare and commit phases."""

    def __init__(self) -> None:
        self.prepared: List…
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