seoAutoInfrastructureCacheTtl top-level constant

Duration const seoAutoInfrastructureCacheTtl

The default for seoBotMiddleware(infrastructureCacheTtl:): derive each infrastructure file's cache lifetime from what it actually reads, rather than from one flag for the whole table.

• sitemap.xml and llms.txt need only head metadata, so they are cached for the process lifetime unless a route is dynamic or enumerates its paths.
• llms-full.txt also renders bodies, and a classic route's body builder may be async and database-backed — "classic" does not mean "immutable". It is cached for the process lifetime only when no route has a body builder at all.

Anything not eligible for a forever-cache gets 15 minutes, so a long-running server never advertises a sitemap frozen at boot. Pass an explicit Duration to override both, or null to cache forever regardless.

Implementation

const Duration seoAutoInfrastructureCacheTtl = Duration(microseconds: -1);