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System design patterns

Sharding, load balancing, CAP tradeoffs, and scaling patterns — interview and production ready.

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System design patterns medium

How to Build an Anti-Corruption Layer in Python

Wrap a legacy system with a translation layer that converts awkward legacy data into a clean, modern DTO (Data Transfer Object) for use by new code.

anti-corruption-layer ddd dto
Python 
class LegacyOrderSystem:
    """Legacy system with awkward, unstructured data."""
    def get_order(self):
        return {
            "order_id": "ORD-123",
            "cust": "Acme Corp",
            "items": [{"sku": "A1", "qty": 2, "price_each": 10.0}],
            "ship_to": "123 Main St, Springfield"
        }…
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System design patterns — Python code examples

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