AI Generated a DynamoDB Query That Could Never Work

Short summary

AI assistants confidently generate infrastructure code referencing non-existent indexes because they infer from scattered code and configs without understanding deployed systems. This isn't a retrieval or context-window problem—infrastructure demands deterministic knowledge of topology, relationships, and constraints. Syntactically correct code that can't run is the result, alongside unexpected AWS bills.

• •AI assistants generate infrastructure code confidently despite not understanding deployed systems
• •The problem: they infer from code/configs but lack deterministic topology and constraint knowledge
• •Result: syntactically correct but operationally broken code leading to runtime failures and costs

Generated with AI, which can make mistakes.