{"id":"fan-out-write-pushes-references-not-data","text":"Both chat (inbox routing) and news feed (post ID distribution) push lightweight references at write time, deferring full data hydration to the read path — this shared pattern helps decouple write-time fanout cost from payload size in these two systems.","truth_value":"IN","source":"","source_url":"","source_hash":"","justifications":[{"type":"SL","antecedents":["chat-fanout-on-write","news-feed-fan-out-write-pushes-ids"],"outlist":[],"label":"Reference-based fanout limits write amplification to pointer-sized payloads"}],"dependents":["social-systems-combine-symmetric-graphs-and-lightweight-fanout","write-time-decisions-are-lightweight-but-binding"],"metadata":{"last_reviewed":"2026-06-06T06:26:57","review_result":"invalid"},"created_at":"","updated_at":"","reviewed_at":"","verified_at":"","retracted_at":"","explanation":{"steps":[{"node":"fan-out-write-pushes-references-not-data","truth_value":"IN","reason":"SL justification valid","antecedents":["chat-fanout-on-write","news-feed-fan-out-write-pushes-ids"],"label":"Reference-based fanout limits write amplification to pointer-sized payloads"},{"node":"chat-fanout-on-write","truth_value":"IN","reason":"premise"},{"node":"news-feed-fan-out-write-pushes-ids","truth_value":"IN","reason":"premise"}]}}