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Production deployment patterns

Graceful shutdown, prod config, rollouts, readiness probes, and ship-with-confidence checks.

4 matches

How to Build a GitOps Argo CD Sync Mock in Python

Simulate Argo CD-style GitOps deployment sync with Python dataclasses, random success rates, and force-sync retry logic.

gitops argo-cd deployment

Python

import random
import time
from dataclasses import dataclass, field
from typing import List, Dict


@dataclass
class Application:
    name: str
    source_repo: str
    target_revision: str
    synced: bool = False
    health_status: str = "Healthy"
    history: List[Dict] = field(default_factory=list)

    def sync(se…

13 0 Open

Production deployment patterns medium

How to Mock Kubernetes Services with a ClusterIP Registry in Python

Simulate Kubernetes service discovery by assigning ClusterIP addresses to dataclass-defined services, with JSON export for inspection or testing.

kubernetes clusterip mock

Python

import json
from dataclasses import dataclass, asdict
from typing import Dict, Optional


@dataclass
class Service:
    name: str
    namespace: str
    cluster_ip: str
    selector: Dict[str, str]
    port: int
    target_port: Optional[int] = None


class ClusterIPServiceRegistry:
    _ip_counter = 0

    def __init…

13 0 Open

Production deployment patterns easy

How to Mock a Container Registry in Python

Build an in-memory container registry mock with push, tag listing, and manifest retrieval logic for testing deployment tooling.

containers testing mocking

Python

import json
from collections import defaultdict


class MockRegistry:
    def __init__(self):
        self.repositories = defaultdict(dict)

    def push_image(self, repo: str, tag: str, layers: list[str]) -> None:
        self.repositories[repo][tag] = {
            "layers": layers,
            "size": sum(len(layer…

14 0 Open

Production deployment patterns easy

How to Roll Back to a Previous Image Tag in Python

A dataclass-based mock registry that tracks image tag history and rolls back to the previous tag, useful for deployment rollback logic.

rollback deployment dataclass

Python

"""Demonstrates a rollback pattern for a Docker-style image tag registry."""

from dataclasses import dataclass, field


@dataclass
class ImageRegistry:
    """A minimal mock registry tracking current tags per image."""

    tags: dict[str, list[str]] = field(default_factory=dict)

    def push(self, image: str, tag: …

13 0 Open

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