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hardAnthropicOpenAISalesforce

Design safety guardrails into the request flow of an LLM serving system, where do they sit and what does each catch?

An Anthropic-style system design axis: architectural safety. The answer is a pipeline diagram in words, five checkpoints, what each catches, what each costs in latency, and the streaming complication most candidates forget.

Updated Aug 2026 · Grounded in real Forward Deployed Engineer interview loops and written to a senior-engineer editorial bar.

An Anthropic-style system design axis: architectural safety. The answer is a pipeline diagram in words, five checkpoints, what each catches, what each costs in latency, and the streaming complication most candidates forget.

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Next in this trackCompare PII detection methods, regex, entropy, NER, external APIs. Why can't regex alone find a person's name?Next in this trackShould PII redaction live at the AI gateway or in the application layer? Argue the trade-offs.Next in this trackDesign a PII redaction system for an LLM pipeline, PII enters at user input, retrieved context, tool results, and output. Guard all four.
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