What are Architectural Anti-patterns?

Anti-patterns are commonly reinvented but bad solutions to a problem. In architecture, they lead to unscalable, unmaintainable systems.

Examples include the 'Big Ball of Mud' (code without any recognizable architecture), 'God Object' (a class that knows/does too much), and 'Golden Hammer' (using a familiar technology for every problem, e.g., using Redis for relational data). Recognizing these prevents technical debt.