early_hints_usage_rank.sql

Author: tannerhodges

sql/2025/performance/early_hints_usage_rank.sql

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+#standardSQL
+# Early Hints (HTTP 103) usage by site rank
+# Measures the percentage of sites using early hints at different popularity ranks
+
+SELECT
+  IF(ranking < 100000000, CAST(ranking AS STRING), 'all') AS ranking,
+  r.client,
+  COUNT(DISTINCT r.page) AS total_sites,
+  COUNTIF(JSON_QUERY_ARRAY(r.payload._early_hint_headers) IS NOT NULL) AS sites_with_early_hints,
+  COUNTIF(JSON_QUERY_ARRAY(r.payload._early_hint_headers) IS NOT NULL) / COUNT(DISTINCT r.page) AS pct_early_hints
+FROM
+  `httparchive.crawl.requests` r
+JOIN
+  `httparchive.crawl.pages` p
+ON
+  r.page = p.page AND
+  r.client = p.client AND
+  r.date = p.date,
+  UNNEST([1000, 10000, 100000, 1000000, 10000000, 100000000]) AS ranking
+WHERE
+  r.date = '2025-07-01' AND
+  r.is_main_document AND
+  r.is_root_page AND
+  p.is_root_page AND
+  p.rank <= ranking
+GROUP BY
+  ranking,
+  r.client
+ORDER BY
+  ranking,
+  r.client