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< title > Bluesky Architecture compared to other social media services< / title >
< meta name = "author" content = "Éibhear Ó hAnluain" / >
< meta name = "description" content = "A discussion of Bluesky's architecture as it relates to other social media services" / >
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< section id = "sec-title-slide" data-background = "./bCardBackground.png" > < h1 class = "title" > Bluesky Architecture compared to other social media services< / h1 > < p class = "subtitle" > < a href = "?print-pdf" > Printable version< / a > < / p >
< h2 class = "author" > Éibhear Ó hAnluain< / h2 > < h2 class = "email" > < a href = "mailto:eibhear.geo@gmail.com" > eibhear.geo@gmail.com< / a > < / h2 > < h2 class = "date" > 2024-05-24 Fri 00:00< / h2 >
< / section >
< section id = "sec-table-of-contents" data-background = "./bCardBackground.png" > < div id = "table-of-contents" role = "doc-toc" >
< h2 > Table of Contents< / h2 >
< div id = "text-table-of-contents" role = "doc-toc" >
< ul >
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< li > < a href = "#/slide-org93a8805" > Introduction< / a > < / li >
< li > < a href = "#/slide-org26c71e1" > General social media architectures< / a > < / li >
< li > < a href = "#/slide-orgad41de2" > Federated social media services< / a > < / li >
< li > < a href = "#/slide-org3bda0cb" > Bluesky< / a > < / li >
< li > < a href = "#/slide-org6396db6" > Bluesky – Identities< / a > < / li >
< li > < a href = "#/slide-org0c5cce8" > Bluesky – Feeds< / a > < / li >
< li > < a href = "#/slide-org79115e8" > Bluesky – The AppView< / a > < / li >
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< / ul >
< / div >
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< / section >
< section >
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< section id = "slide-org93a8805" data-background = "./bCardBackground.png" >
< h2 id = "org93a8805" > Introduction< / h2 >
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< p >
Boo!
< / p >
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< / section >
< / section >
< section >
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< section id = "slide-org26c71e1" data-background = "./bCardBackground.png" >
< h2 id = "org26c71e1" > General social media architectures< / h2 >
< div class = "outline-text-2" id = "text-org26c71e1" >
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< / div >
< / section >
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< section id = "slide-org47f6f38" data-background = "./bCardBackground.png" >
< h3 id = "org47f6f38" > Simplistic view 1/2 – overview< / h3 >
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< div id = "org54aa8e9" class = "figure" >
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< p > < img src = "structurizr-1-001-GenericSocial-01.png" alt = "structurizr-1-001-GenericSocial-01.png" width = "90%" / >
< / p >
< / div >
< / div >
< / section >
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< section id = "slide-org4adbb43" data-background = "./bCardBackground.png" >
< h3 id = "org4adbb43" > Simplistic view 2/2 – services< / h3 >
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< div class = "one_of_2_columns" >
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< div id = "org4b7cca7" class = "figure" >
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< p > < img src = "structurizr-1-002-GenericSocial-02.png" alt = "structurizr-1-002-GenericSocial-02.png" width = "40%" / >
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< / p >
< / div >
< / div >
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< div class = "one_of_2_columns" >
< ul >
< li class = "fragment appear" > Social media user access the app< / li >
< li class = "fragment appear" > The app interacts with the API< / li >
< li class = "fragment appear" > The API is the gateway for the database of posts, responses, likes, etc.< / li >
< / ul >
< / div >
< / div >
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< / section >
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< section id = "slide-org2595986" data-background = "./bCardBackground.png" >
< h3 id = "org2595986" > More realistic view 1/4 – overview< / h3 >
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< div class = "e-frame" >
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< div id = "orgc4ff576" class = "figure" >
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< p > < img src = "structurizr-1-003-RealisticSocial-01.png" alt = "structurizr-1-003-RealisticSocial-01.png" width = "90%" / >
< / p >
< / div >
< / div >
< / section >
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< section id = "slide-orga2df08a" data-background = "./bCardBackground.png" >
< h3 id = "orga2df08a" > More realistic view 2/4 – basic services< / h3 >
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< div class = "one_of_2_columns" >
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< div id = "orgd65630e" class = "figure" >
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< p > < img src = "structurizr-1-004-RealisticSocial-02.png" alt = "structurizr-1-004-RealisticSocial-02.png" width = "70%" / >
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< / p >
< / div >
< / div >
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< div class = "one_of_2_columns" >
< ul >
< li class = "fragment appear" > Social media user access the app< / li >
< li class = "fragment appear" > The app interacts with the API< / li >
< li class = "fragment appear" > The API is the gateway for the database of posts, responses, likes, etc.< / li >
< li class = "fragment appear" > The API also captures data for building profiles of users for targeting purposes< / li >
< li class = "fragment appear" > The algorithmic feed generator guides the API on what posts to place into the app's feed< / li >
< / ul >
< / div >
< / div >
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< / section >
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< section id = "slide-orgaee48ac" data-background = "./bCardBackground.png" >
< h3 id = "orgaee48ac" > More realistic view 3/4 – the algorithm< / h3 >
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< div id = "org69ec8e9" class = "figure" >
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< p > < img src = "structurizr-1-005-RealisticSocial-03.png" alt = "structurizr-1-005-RealisticSocial-03.png" width = "70%" / >
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< / p >
< / div >
< / div >
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< div class = "one_of_2_columns" >
< ul >
< li > Social media user access the app< / li >
< li > The app interacts with the API< / li >
< li > The API is the gateway for the database of posts, responses, likes, etc.< / li >
< li > The API also captures data for building profiles of users for targeting purposes< / li >
< li > The algorithmic feed generator guides the API on what posts to place into the app's feed< / li >
< li > Algorithmic feeds are created by the service administrator, using an app only < i > they< / i > have access to< / li >
< / ul >
< / div >
< / div >
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< / section >
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< section id = "slide-orga8647d5" data-background = "./bCardBackground.png" >
< h3 id = "orga8647d5" > More realistic view 4/4 – content moderation< / h3 >
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< div class = "gridded_frame_with_columns e-frame" >
< div class = "one_of_2_columns" >
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< div id = "org3b0659e" class = "figure" >
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< p > < img src = "structurizr-1-006-RealisticSocial-04.png" alt = "structurizr-1-006-RealisticSocial-04.png" width = "100%" / >
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< / p >
< / div >
< / div >
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< div class = "one_of_2_columns" >
< ul >
< li > Social media user access the app< / li >
< li > The app interacts with the API< / li >
< li > The API is the gateway for the database of posts, responses, likes, etc.< / li >
< li > The API also captures data for building profiles of users for targeting purposes< / li >
< li > The algorithmic feed generator guides the API on what posts to place into the app's feed< / li >
< li > Algorithmic feeds are created by the service administrator, using an app only < i > they< / i > have access to< / li >
< li > Moderation is also performed by a member of the service's staff, using a dedicate app and services the the user doesn't have access to< / li >
< / ul >
< / div >
< / div >
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< / section >
< / section >
< section >
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< section id = "slide-orgad41de2" data-background = "./bCardBackground.png" >
< h2 id = "orgad41de2" > Federated social media services< / h2 >
< div class = "outline-text-2" id = "text-orgad41de2" >
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< / div >
< / section >
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< section id = "slide-org38b1172" data-background = "./bCardBackground.png" >
< h3 id = "org38b1172" > Federated services 1/8 – overview< / h3 >
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< div class = "e-frame" >
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< div id = "orga57c504" class = "figure" >
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< p > < img src = "structurizr-1-007-FederatedSocial-01.png" alt = "structurizr-1-007-FederatedSocial-01.png" width = "75%" / >
< / p >
< / div >
< / div >
< / section >
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< section id = "slide-org220840e" data-background = "./bCardBackground.png" >
< h3 id = "org220840e" > Federated services 2/8 – internal, administration and content moderation services< / h3 >
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< div class = "gridded_frame_with_columns e-frame" >
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< div class = "one_of_2_columns" >
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< div id = "org28dffa4" class = "figure" >
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< p > < img src = "structurizr-1-008-FederatedSocial-02.png" alt = "structurizr-1-008-FederatedSocial-02.png" width = "70%" / >
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< / p >
< / div >
< / div >
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< div class = "one_of_2_columns" >
< ul >
< li class = "fragment appear" > Same as before, the user access the service through an App that uses an API< / li >
< li class = "fragment appear" > As federated services are small, the administrator and the moderator are the one person< / li >
< li class = "fragment appear" > No algorithmic feeds, though
< ul >
< li > not popular in the fediverse community< / li >
< li > difficult to implement in a federated environment.< / li >
< / ul > < / li >
< / ul >
< / div >
< / div >
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< / section >
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< section id = "slide-org263cd7c" data-background = "./bCardBackground.png" >
< h3 id = "org263cd7c" > Federated services 3/8 – federation 1< / h3 >
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< div class = "gridded_frame_with_columns e-frame" >
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< div class = "one_of_2_columns" style = "width: 60%" >
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< div id = "org05f7137" class = "figure" >
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< p > < img src = "structurizr-1-009-FederatedSocial-03.png" alt = "structurizr-1-009-FederatedSocial-03.png" width = "100%" / >
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< / p >
< / div >
< / div >
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< div class = "one_of_2_columns" style = "width: 40%" >
< ul >
< li > Same as before, the user access the service through an App that uses an API< / li >
< li > As federated services are small, the administrator and the moderator are the one person< / li >
< li > No algorithmic feeds, though
< ul >
< li > not popular in the fediverse community< / li >
< li > difficult to implement in a federated environment.< / li >
< / ul > < / li >
< li class = "fragment appear" > Federation service to push activity out to the federated network< / li >
< li class = "fragment appear" > Federation API to take in activity from other nodes< / li >
< li class = "fragment appear" > A logical database of inbound federated posts< / li >
< li class = "fragment appear" > Federation using ActivityPub standard< / li >
< / ul >
< / div >
< / div >
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< / section >
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< section id = "slide-orgc7306f8" data-background = "./bCardBackground.png" >
< h3 id = "orgc7306f8" > Federated services 4/8 – federation 2< / h3 >
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< div class = "e-frame" >
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< div id = "org9df0f59" class = "figure" >
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< p > < img src = "structurizr-1-010-FederatedSocial-04.png" alt = "structurizr-1-010-FederatedSocial-04.png" width = "75%" / >
< / p >
< / div >
< / div >
< / section >
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< section id = "slide-org075c52b" data-background = "./bCardBackground.png" >
< h3 id = "org075c52b" > Federated services 5/8 – federation 3< / h3 >
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< div class = "e-frame" >
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< div id = "org678c821" class = "figure" >
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< p > < img src = "structurizr-1-011-FederatedSocial-05.png" alt = "structurizr-1-011-FederatedSocial-05.png" width = "75%" / >
< / p >
< / div >
< / div >
< / section >
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< section id = "slide-org049d4e6" data-background = "./bCardBackground.png" >
< h3 id = "org049d4e6" > Federated services 6/8 – federation 4< / h3 >
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< div class = "e-frame" >
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< div id = "org0f1f5c2" class = "figure" >
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< p > < img src = "structurizr-1-012-FederatedSocial-06.png" alt = "structurizr-1-012-FederatedSocial-06.png" width = "75%" / >
< / p >
< / div >
< / div >
< / section >
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< section id = "slide-orge0823d2" data-background = "./bCardBackground.png" >
< h3 id = "orge0823d2" > Federated services 7/8 – federation 5< / h3 >
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< div class = "e-frame" >
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< div id = "org9439a7c" class = "figure" >
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< p > < img src = "structurizr-1-013-FederatedSocial-07.png" alt = "structurizr-1-013-FederatedSocial-07.png" width = "75%" / >
< / p >
< / div >
< / div >
< / section >
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< section id = "slide-org3f86b37" data-background = "./bCardBackground.png" >
< h3 id = "org3f86b37" > Federated services 8/8 – federation 6< / h3 >
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< div class = "e-frame" >
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< div id = "org6733f9f" class = "figure" >
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< p > < img src = "structurizr-1-014-FederatedSocial-08.png" alt = "structurizr-1-014-FederatedSocial-08.png" width = "75%" / >
< / p >
< / div >
< / div >
< / section >
< / section >
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< section >
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< section id = "slide-org3bda0cb" data-background = "./bCardBackground.png" >
< h2 id = "org3bda0cb" > Bluesky< / h2 >
< div class = "outline-text-2" id = "text-org3bda0cb" >
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< / div >
< / section >
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< section id = "slide-org1a96ca1" data-background = "./bCardBackground.png" >
< h3 id = "org1a96ca1" > Basic Bluesky 1/2< / h3 >
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< div class = "e-frame" >
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< div id = "orge9ee9f3" class = "figure" >
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< p > < img src = "structurizr-1-015-BlueskyBasic-01.png" alt = "structurizr-1-015-BlueskyBasic-01.png" width = "100%" / >
< / p >
< / div >
< / div >
< / section >
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< section id = "slide-org7ffed55" data-background = "./bCardBackground.png" >
< h3 id = "org7ffed55" > Basic Bluesky 2/2< / h3 >
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< div class = "gridded_frame_with_columns e-frame" >
< div class = "one_of_2_columns" style = "width: 70%" >
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< div id = "orgba60da0" class = "figure" >
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< p > < img src = "structurizr-1-016-BlueskyBasic-02.png" alt = "structurizr-1-016-BlueskyBasic-02.png" width = "100%" / >
< / p >
< / div >
< / div >
< div class = "one_of_2_columns" style = "width: 30%" >
< ul >
< li class = "fragment appear" > User interfaces with an app hosted by the < i > AppView< / i > < / li >
< li class = "fragment appear" > The < i > AppView< / i > includes an API (allowing for bot-like interactions)< / li >
< li class = "fragment appear" > The < i > AppView< / i > stores and reads data from the < i > Personal Data Server< / i > (PDS)< / li >
< li class = "fragment appear" > Bluesky resolved user identities using "DIDs" (Distributed IDs)< / li >
< li class = "fragment appear" > The Bluesky admin uses a separate service for preparing algorithmic feeds< / li >
< li class = "fragment appear" > The Bluesky moderator applies labels and actions to posts for trust and safety through a dedicated service< / li >
< / ul >
< / div >
< / div >
< / section >
< / section >
< section >
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< section id = "slide-org6396db6" data-background = "./bCardBackground.png" >
< h2 id = "org6396db6" > Bluesky – Identities< / h2 >
< div class = "outline-text-2" id = "text-org6396db6" >
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< / div >
< / section >
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< section id = "slide-org1b31b9a" data-background = "./bCardBackground.png" >
< h3 id = "org1b31b9a" > Bluesky Identities 1/4< / h3 >
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< div class = "gridded_frame_with_columns e-frame" >
< div class = "one_of_2_columns" style = "width: 35%" >
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< div id = "org73f4b15" class = "figure" >
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< p > < img src = "structurizr-1-017-BlueskyIdentity-01.png" alt = "structurizr-1-017-BlueskyIdentity-01.png" width = "100%" / >
< / p >
< / div >
< / div >
< div class = "one_of_2_columns" style = "width: 65%" >
< ul >
< li class = "fragment appear" > User's typical Bluesky ID is < code > @< user-handle> .bsky.social< / code >
< ul >
< li > e.g. < code > @theauldsthretch.bsky.social< / code > < / li >
< / ul > < / li >
< li class = "fragment appear" > Users can set up their own handle, < code > @< user-handle> .< domain> < / code > . E.g. (and these are all real IDs) …
< ul >
< li > < code > @astrokatie.com< / code > – a cosmologist< / li >
< li > < code > @eibhear.gibiris.org< / code > – the author< / li >
< li > < code > @wyden.senate.gov< / code > – a U.S. Senator< / li >
< / ul > < / li >
< li class = "fragment appear" > User must control the domain or be a legitimate member of the domain's community< / li >
< li class = "fragment appear" > < p >
Domain-based handle resolves to a DID, either by DNS or < code > .well-known< / code > :
< / p >
< div class = "org-src-container" >
< pre class = "src src-shell" > < code trim > $ dig _atproto.eibhear.gibiris.org TXT
...
;; ANSWER SECTION:
_atproto.eibhear.gibiris.org. 3600 IN TXT < span style = "color: #8b2252;" > "did=did:plc:23mysztmt7dh3l5lzhinzafi"< / span >
$ curl https://theauldsthretch.bsky.social/.well-known/atproto-did
did:plc:avzdf5esd7xpbgsgh7lx4kzq
< / code > < / pre >
< / div > < / li >
< / ul >
< / div >
< / div >
< / section >
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< section id = "slide-org1baca60" data-background = "./bCardBackground.png" >
< h3 id = "org1baca60" > Bluesky Identities 2/4< / h3 >
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< div class = "e-frame" >
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< div id = "org7d8d5a4" class = "figure" >
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< p > < img src = "structurizr-1-018-BlueskyIdentity-02.png" alt = "structurizr-1-018-BlueskyIdentity-02.png" width = "100%" / >
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< / section >
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< section id = "slide-orgebce57a" data-background = "./bCardBackground.png" >
< h3 id = "orgebce57a" > Bluesky Identities 3/4< / h3 >
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< div id = "org24dd312" class = "figure" >
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< p > < img src = "structurizr-1-019-BlueskyIdentity-03.png" alt = "structurizr-1-019-BlueskyIdentity-03.png" width = "100%" / >
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< / section >
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< h3 id = "org56cbb88" > Bluesky Identities 3/4< / h3 >
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< p > < img src = "structurizr-1-020-BlueskyIdentity-04.png" alt = "structurizr-1-020-BlueskyIdentity-04.png" width = "100%" / >
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< section >
< section id = "slide-org0c5cce8" data-background = "./bCardBackground.png" >
< h2 id = "org0c5cce8" > Bluesky – Feeds< / h2 >
< div class = "outline-text-2" id = "text-org0c5cce8" >
< / div >
< / section >
< section id = "slide-orga4e19d3" data-background = "./bCardBackground.png" >
< h3 id = "orga4e19d3" > Bluesky Feeds 1/3< / h3 >
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< div class = "one_of_2_columns" style = "width: 70%" >
< div id = "org041552a" class = "figure" >
< p > < img src = "structurizr-1-021-BlueskyFeeds-01.png" alt = "structurizr-1-021-BlueskyFeeds-01.png" width = "100%" / >
< / p >
< / div >
< / div >
< div class = "one_of_2_columns" style = "width: 30%" >
< ul >
< li class = "fragment appear" > Algorithmic feeds use an API< / li >
< li class = "fragment appear" > Allows for independent feeds to be created by 3rd parties< / li >
< li class = "fragment appear" > Users' default feed is < i > Following< / i > :
< ul >
< li > A chronological feed of posts from those you follow< / li >
< / ul > < / li >
< li class = "fragment appear" > Users subscribe to other feeds. Examples:
< ul >
< li > < i > Discover< / i > – posts that you may be interested in< / li >
< li > < i > Astronomy< / i > – Posts relating to astronomy< / li >
< li > < i > Quiet Posters< / i > – those you follow but who don't post very often< / li >
< / ul > < / li >
< li class = "fragment appear" > The < i > AppView< / i > will read data from the independent feeds< / li >
< li class = "fragment appear" > The feeds get relevant posts from the PDS< / li >
< / ul >
< / div >
< / div >
< / section >
< section id = "slide-orgbb3d261" data-background = "./bCardBackground.png" >
< h3 id = "orgbb3d261" > Bluesky Feeds 2/3 – feeds as a separate application type< / h3 >
< div class = "e-frame" >
< div id = "orgeb73970" class = "figure" >
< p > < img src = "structurizr-1-023-BlueskyFeeds-03.png" alt = "structurizr-1-023-BlueskyFeeds-03.png" width = "100%" / >
< / p >
< / div >
< / div >
< / section >
< section id = "slide-org2348787" data-background = "./bCardBackground.png" >
< h3 id = "org2348787" > Bluesky Feeds 3/3 – Generic feeds< / h3 >
< div class = "e-frame" >
< div id = "org486bb3e" class = "figure" >
< p > < img src = "structurizr-1-024-BlueskyFeeds-04.png" alt = "structurizr-1-024-BlueskyFeeds-04.png" width = "100%" / >
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< / div >
< / section >
< / section >
< section >
< section id = "slide-org79115e8" data-background = "./bCardBackground.png" >
< h2 id = "org79115e8" > Bluesky – The AppView< / h2 >
< div class = "outline-text-2" id = "text-org79115e8" >
< / div >
< / section >
< section id = "slide-org70c253d" data-background = "./bCardBackground.png" >
< h3 id = "org70c253d" > Bluesky AppView 1/3< / h3 >
< div class = "gridded_frame_with_columns e-frame" >
< div class = "one_of_2_columns" style = "width: 60%" >
< div id = "orgd349f8e" class = "figure" >
< p > < img src = "structurizr-1-025-BlueskyAppView-01.png" alt = "structurizr-1-025-BlueskyAppView-01.png" width = "100%" / >
< / p >
< / div >
< / div >
< div class = "one_of_2_columns" style = "width: 40%" >
< ul >
< li class = "fragment appear" > The main application users interact with the < i > AppView< / i > .< / li >
< li class = "fragment appear" > The < i > AppView< / i > consists of the application (web, mobile, etc.) and the API
< ul >
< li > 3rd-party applications (web, mobile, bots) can be created< / li >
< / ul > < / li >
< li class = "fragment appear" > The application is only a part of the < i > AppView< / i > < / li >
< li class = "fragment appear" > Implements the < i > lexicon< / i > of the service
< ul >
< li > Converts the < i > data< / i > in the PDS into the social media < i > information< / i > < / li >
< / ul > < / li >
< li class = "fragment appear" > Now implemented by Bluesky as a separate application< / li >
< li class = "fragment appear" > < i > AppView< / i > reads from the Feeds services, the Moderation services and the PDS itelf< / li >
< li class = "fragment appear" > < i > AppView< / i > writes new posts, reposts, likes, replies, etc. to the PDS< / li >
< / ul >
< / div >
< / div >
< / section >
< section id = "slide-org1294eab" data-background = "./bCardBackground.png" >
< h3 id = "org1294eab" > Bluesky AppView 2/3 – A 3rd-party independent AppView< / h3 >
< div class = "gridded_frame_with_columns e-frame" >
< div class = "one_of_2_columns" style = "width: 60%" >
< div id = "org60af8ea" class = "figure" >
< p > < img src = "structurizr-1-027-BlueskyAppView-03.png" alt = "structurizr-1-027-BlueskyAppView-03.png" width = "100%" / >
< / p >
< / div >
< / div >
< div class = "one_of_2_columns" style = "width: 40%" >
< ul >
< li > The main application users interact with the < i > AppView< / i > .< / li >
< li > The < i > AppView< / i > consists of the application (web, mobile, etc.) and the API
< ul >
< li > 3rd-party applications (web, mobile, bots) can be created< / li >
< / ul > < / li >
< li > The application is only a part of the < i > AppView< / i > < / li >
< li > Implements the < i > lexicon< / i > of the service
< ul >
< li > Converts the < i > data< / i > in the PDS into the social media < i > information< / i > < / li >
< / ul > < / li >
< li > Now implemented by Bluesky as a separate application< / li >
< li > < i > AppView< / i > reads from the Feeds services, the Moderation services and the PDS itelf< / li >
< li class = "fragment appear" > < i > AppView< / i > writes new posts, reposts, likes, replies, etc. to the PDS< / li >
< li class = "fragment appear" > Third parties can also develop separate < i > AppViews< / i > (the application and APIs) …
< ul >
< li > Alternatives to Bluesky's own < i > AppView< / i > < / li >
< li > Implement a new < i > lexicon< / i > for, say, video sharing, long-form posts, etc.< / li >
< / ul > < / li >
< / ul >
< / div >
< / div >
< / section >
< section id = "slide-orga1d1aae" data-background = "./bCardBackground.png" >
< h3 id = "orga1d1aae" > Bluesky AppView 3/3 – Generic AppView< / h3 >
< div class = "e-frame" >
< div id = "org59a3109" class = "figure" >
< p > < img src = "structurizr-1-028-BlueskyAppView-04.png" alt = "structurizr-1-028-BlueskyAppView-04.png" width = "70%" / >
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