Java: Observer Pattern

When does Observer help checkout design?

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Java: Pattern Abuse

What should usually trigger a pattern choice?

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Java: Pattern Abuse

How would you explain a common sign of pattern abuse in an interview?

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Java: Proxy and Adapter

What should an adapter own?

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Java: Proxy and Adapter

If Stripe changes its SDK, where should most of the fix live?

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Java: Proxy and Adapter

Understanding the Proxy Pattern?

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Java: Proxy and Adapter

What does the Adapter Pattern do?

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Java: Proxy and Adapter

Proxy Pattern: Matching Interfaces?

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Java: Factory Pattern

How would you explain a common mistake when implementing a factory in an interview?

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Java: Factory Pattern

What testing benefit comes from a stable `PaymentGateway` seam?

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