Designing an RSS Feed Identity API and Registry
A practical architecture for resolving feed IDs, canonical URLs, aliases, metadata, evidence, and lifecycle events through a transparent API.
10 deep implementation guides
Identity Log
Original guides for publishers and developers working with RSS feed IDs, GUIDs, Atom, JSON Feed, podcasts, validation, discovery, and registries.
All articles
Publication dates span 2024–2026. Every article includes a custom 1200 × 1200 featured image and one authoritative editorial source.
Feed Fingerprints: Detecting Duplicate or Mirrored Syndication Sources
Build explainable fingerprints from normalized feed structure, item identity, and URL history without mistaking formatting changes for new publications.
Podcast Feed IDs: Identity, Redirects, and Directory Migration
Protect show and episode identity when changing podcast hosts, feed URLs, enclosure storage, or directory settings.
JSON Feed IDs: Stable Identifiers in Version 1.1
Design stable JSON Feed item IDs, preserve them through API and URL changes, and use URLs, attachments, and dates without confusing location with identity.
Atom IDs and RFC 4287: Choosing Permanent Feed and Entry Identifiers
Understand Atom’s required id elements, choose permanent URI values, and preserve identity across domain changes, imports, and format conversions.
RSS Validation Checklist: Fixing Feed Errors Before Release
Validate syntax, dates, identifiers, namespaces, enclosures, headers, and migration behavior before a feed reaches readers or directories.
RSS Autodiscovery: Publishing the Right Link Tag in HTML
Use HTML feed discovery markup correctly so browsers, readers, crawlers, and developer tools can locate the intended RSS or Atom feed.
Canonical Feed URLs: How to Move or Rename a Feed Safely
A migration playbook for choosing one preferred feed address, preserving aliases, deploying redirects, and preventing duplicate subscriptions.
RSS GUIDs Explained: Stable Item IDs Without Duplicate Entries
Learn what the RSS guid element means, how isPermaLink changes interpretation, and how to preserve item identity through edits and migrations.
What Is an RSS Feed ID? A Practical Identity Model for Syndication
A feed URL tells a reader where to fetch. A feed ID tells a system which feed it is dealing with, even when locations, titles, and hosts change.
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Feed Fundamentals
3 focused guides.
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Publishing Operations
3 focused guides.
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Formats and Media
2 focused guides.
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Infrastructure
2 focused guides.