Updated 2026-08-20
Static SEO Basics
Learn how build-time HTML gives crawlers stable metadata, readable content, and predictable URLs without adding request-time compute.
Open guide →Project A · public gateway
One public domain. Two static projects.
These guides are built by Project B and served through an external rewrite. Documents and hashed assets stay on this visible host.
Rewrite cacheEnabledSet at build time by REWRITE_CACHE_ENABLED
Static guide inventory
Explore the test surface
Updated 2026-08-21
Caching External Rewrites
Understand how a public gateway can cache rewritten origin responses while preserving one visible hostname for documents and assets.
Open guide →Updated 2026-08-22
Canonical URLs Across Origins
Keep duplicate origin and gateway responses aligned by declaring one stable public URL in metadata, links, and the sitemap.
Open guide →Updated 2026-08-23
Asset Prefix Routing
Serve an origin project’s hashed Next.js JavaScript and CSS through the same public prefix as its rewritten HTML.
Open guide →Updated 2026-08-24
Robots Boundaries for Test Origins
Separate crawler policy by hostname so the gateway is discoverable while the directly exposed origin remains blocked.
Open guide →Updated 2026-08-25
Sitemap Integrity Checks
Generate a small deterministic sitemap whose URLs, dates, canonical metadata, and internal links remain in lockstep.
Open guide →Updated 2026-08-26
Cache Observability
Collect response-level and dashboard evidence that distinguishes gateway requests, origin lifecycles, and cached delivery.
Open guide →Updated 2026-08-27
Controlled Cache Experiments
Design cache-on and cache-off trials whose request counts, locations, inputs, and observation windows can be compared fairly.
Open guide →Updated 2026-08-28
Build-Time Content Validation
Fail early when guide slugs, relationships, dates, descriptions, or article structures would create inconsistent static output.
Open guide →Updated 2026-08-29
Two-Project Deployment Checklist
Deploy the origin before the gateway and verify environment, protection, domain, content synchronization, and asset-routing assumptions.
Open guide →Updated 2026-08-30
Safe Rewrite Rollbacks
Recover from origin, routing, or cache failures without hiding stale behavior or losing track of production aliases.
Open guide →Updated 2026-08-31
SSG Cost Controls
Keep the origin predictable by removing request-time rendering, regeneration, remote data, image transforms, and polling.
Open guide →Additional SEO page groups
Validated static route fixtures
IBAN checker pages
Country-specific IBAN structure and checksum fixtures
- Germany IBAN DE89370400440532013000Inspect page →
- United Kingdom IBAN GB82WEST12345698765432Inspect page →
- France IBAN FR1420041010050500013M02606Inspect page →
- Spain IBAN ES9121000418450200051332Inspect page →
- Netherlands IBAN NL91ABNA0417164300Inspect page →
- Italy IBAN IT60X0542811101000000123456Inspect page →
SWIFT/BIC checker pages
Institution, country, location, and branch-code structure
Five-level depth tests
Finite SEO routes with five dynamic segments
- South Korea SWIFT Primary OfficeInspect page →
- Germany IBAN ChecksumInspect page →
- UK Sort Code Account CheckInspect page →
- US ABA Routing FormatInspect page →
- France Beneficial Owner ReviewInspect page →
- Japan Remittance MonitoringInspect page →
- Netherlands Beneficiary Name MatchInspect page →
- Spain Sanctions ScreeningInspect page →