Cache files reduce repeated render cost on high traffic paths.

Spider ua helper remains for cache write mode when ads are disabled.

Organization json ld includes company name url and descriptive fields.

Template html edits do not invalidate cache until ttl expires or purge runs.

Operational teams should monitor x cache status and x spider status headers.

Title lines can be longer when used as on page h1 rather than meta title.

Write mode all caches every render including tests use carefully in production.

Major search engines must match ua and ip for the same vendor to pass.

Contact sections can pull city diy values for regional office flavor.

Data placeholders can be reused across homepage and list style pages.