demo · v132

Budget economics for saved vs unsaved queries

Two per-page budgets gate selectURL(): a 6-bit entropy budget and a per-page count. v132's saved queries charge once and replay free. Simulate how many selectURL() calls fit in a page under each strategy.

without saved queries (legacy)

total selectURL calls—
entropy charged—
count charged—

entropy budget (12 bits/site/24h):

page count (8 calls/page):

with saved queries (v132)

total selectURL calls—
entropy charged—
count charged—

entropy budget:

page count:

// the call pattern
await sharedStorage.selectURL("my-vertical-ad-mapping", {
  data: { vertical: "checkout" },
  urls,
  savedQuery: "my-vertical-ad-mapping"   // <-- v132
});

see also