Third Parties and Single Points of Failure

One tiny widget can freeze your whole site — devs rage, meme, and point to fixes

TLDR: Paul Calvano warns that relying on outside scripts can stall sites, citing past outages and abandoned services as cautionary tales. The community fires back with fixes like PartyTown, calls to self‑host and remove trackers, and memes about the Like button’s quiet exit — all urging fewer, safer dependencies.

Web perf veteran Paul Calvano sounded the alarm: when your site leans on outside services, one bad day at a big cloud or content delivery network (CDN) can turn your homepage into a blank screen. He calls these “SPOFs” (single points of failure) — and the community had feelings. The loudest camp? The “self-host or bust” crowd, waving receipts from fiascos like the Polyfill.io supply‑chain attack and the still‑lingering RawGit zombie links (25,000+ sites still pinging a dead service!). Others piled on with gallows humor: “Consent manager that blocks the content? Iconic.” Facebook deprecating its Like button in 2026 and returning an empty response became the meme of the day: “The Like button finally… doesn’t.”

Amid the drama, the practical nerds showed up. One commenter pointed to PartyTown, a tool that shoves third‑party scripts off the main thread so your page keeps loading. Another thread argued for “just cut the trackers” and async everything, while skeptics rolled their eyes: if a CDN hiccup can kneecap you, it’s not “optional.” The vibe: ship fewer third parties, isolate the rest, and never let one flaky script hold your users hostage.

Key Points

  • Third-party content can create single points of failure (SPOFs), stalling page loads when critical external resources fail.
  • WebPageTest filmstrips show that failure of a render-blocking third party can leave users with a blank screen until timeout.
  • Outages at large cloud providers/CDNs affect both direct customers and sites indirectly via third-party content delivered through them.
  • Historical examples include Facebook’s 2012 like button outage; Facebook later adopted non-blocking loading and will deprecate the like button in Feb 2026.
  • HTTP Archive data shows persistence and risk: 25K+ sites still request RawGit (shut down in 2018); Polyfill.io was sold in 2024 and used for malicious content by June 2024.

Hottest takes

"PartyTown is another library that can help with this." — sanreau
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