SegIndexer / Tiers

Google doesn't index all pages equally quickly or cheaply. The SegIndexer decides which 'tier' (level) of the index a page lands in — from expensive, lightning-fast servers (for important pages) to slower, cheaper storage (for rarely needed pages). A high tier rank means: the page is quickly available when queries arrive.

scaledSelectionTierRank — a rank value between 0 and 32,767 that reflects a mix of demand (how often is this page searched?), authority and storage economics.

scaledSelectionTierRank = a rank value for index-tier selection; 0-32767 is the technical 16-bit maximum (a finely resolved rank scale, not a quality value in itself). [B field, C tier logic]

Authority is indirect — index-worthiness correlates with authority but does not judge content quality. The system is a 'gate' before the actual ranking: pages not in the fast tier appear more slowly in search results.

For sites with thousands of pages: weak pages occupy tier capacity that more important pages need. Active content pruning frees up capacity and improves indexing efficiency for the pages that matter — such as time-critical reports that must land in the fast tier.