Post AzuLayEwYuwe52AqbA by wiersdorf@fosstodon.org
 (DIR) More posts by wiersdorf@fosstodon.org
 (DIR) Post #AzuFsdyO3OhSi7TQrw by ricci@discuss.systems
       2025-11-04T15:42:39Z
       
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       https://arewedecentralizedyet.online/ now measures several more ways that our online lives are (or aren't) decentralized!In addition to decentralized social networks (the #fediverse and #atprotocol / #bluesky ) it now has data on #web serving, #git forges, #dns servers, and #CAs . The new datasets come from a peer-reviewed scientific study[*] and its measurement methodology, which validates HHI as a useful way to measure centralization of services online.One of the interesting findings is that the level of decentralization of the Fediverse is pretty close to the level of decentralization of the Web itself - both have some pretty large players, but there is a long tail of smaller instances and web hosts that keep the ecosystems similarly competitive. Of course, this also means that both still have quite a bit of room to decentralize more.Similarly, the level of centralization of the git forge ecosystem and the Atmosphere (atproto) are comparable, with both heavily dominated by their largest players (github and Bluesky). The Atmosphere is moving towards greater decentralization, a trend that's been picking up steam in the last few months.I have leads on a few more datasets, so stay tuned![*] "Formalizing Dependence of Web Infrastructure," Habib et al., SIGCOMM '25, https://cs.stanford.edu/~gakiwate/papers/sigcomm25-centralization.pdf
       
 (DIR) Post #AzuLayEwYuwe52AqbA by wiersdorf@fosstodon.org
       2025-11-04T16:46:43Z
       
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       @ricci Man, the concentration of Git forges is like a slap in the face.I’m hoping Forgejo can get their ActivityPub-powered federation working soon!
       
 (DIR) Post #AzuRTVZzK3tgtAqHho by ricci@discuss.systems
       2025-11-04T17:52:33Z
       
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       @jj Yeah I'm hoping to get the data associated with this paper: https://www.sysnet.ucsd.edu/~voelker/pubs/mx-imc21.pdfI also had someone give me a suggestion for how to scrap user data from Matrix, just need to get time to try it
       
 (DIR) Post #AzuTGgc7BaIZFrqoVc by bartcopp@mastodon.social
       2025-11-04T18:12:36Z
       
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       @ricci Related to this, I've been wondering how concentrated the underlying (hosting) infrastructure of the fediverse is. I've started blocking scrapers more aggressively on my server, blocking entire cloud-subnets when some hosts there misbehave, leading me to block large parts of AWS and DigitalOcean in particular. I wonder how many fediverse instances are now collateral damage. (I don't run a fediverse server so the impact is probably small: link previews, ownership checks, ... but still...)
       
 (DIR) Post #AzuYj8kUfnKIOT9nsW by ricci@discuss.systems
       2025-11-04T19:13:50Z
       
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       @bartcopp I've got you: https://discuss.systems/@ricci/114400324446169152