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作者分享了为 ActivityPub 机器人框架（ActivityBot，NLnet 资助项目）编写单元测试时遇到的四大难题：用户名与域名校验、消息验证、HTTP 签名的生成与重放，以及与外部服务器的真实互操作测试。
The author shares how disabling automated account creation on their Mastodon server eliminated spam and improved human connections through manual signups.
The article explains how the ActivityPub protocol achieved success in the Fediverse through its intentionally simple and boring design, enabling broad interoperability without unnecessary complexity.
PieFed, a federated social media platform, highlights its anti-fascist features for community moderation.
The article details the remaining technical work needed to implement end-to-end encryption (E2EE) for ActivityPub, breaking it down into fundamental messaging, security, and authenticity goals, and explains how key transparency and MLS protocols fit into the effort.
Lemmy released version 1.0.0-beta.1 with numerous bug fixes and improvements, continuing its beta testing phase for the upcoming 1.0 stable release.
The article explains the complexities of implementing the ActivityPub protocol, such as handling multiple HTTP signature standards and JSON-LD contexts, and introduces Fedify, a TypeScript framework designed to simplify building ActivityPub applications.
An open declaration calling for the establishment of a European social web with decentralized, open platforms to reduce reliance on foreign monopolistic platforms and promote digital autonomy.
The EU's tech sovereignty plan prioritizes semiconductors, cloud, AI, and data centers while underfunding open source and decentralized social media, revealing a misunderstanding of social infrastructure as core infrastructure.
The author describes using HAProxy caching to reduce unnecessary load on snac threads in the FediMeteo service, following previous similar optimizations with nginx. The approach aims to keep the lightweight ActivityPub server efficient by having the reverse proxy absorb repeated public requests.
Spritely Institute releases Mandy, a prototype implementing ActivityPub on top of the Goblins actor model framework, making ActivityPub actors available over HTTP.