Creating your own federated microblog

Summary

Creating your own federated microblog ​TIPThis tutorial is also available in the following languages: 한국어 (Korean) and 日本語 (Japanese).In this tutorial, we will build a small microblog that implements the ActivityPub protocol, similar to Mastodon or Misskey, using Fedify, an ActivityPub server framework. This tutorial will focus more on how to use Fedify rather than understanding its underlying operating principles.If you have any questions, suggestions, or feedback, please feel free to join our Matrix chat space or Discord server or GitHub Discussions.Target audience ​This tutorial is aimed at those who want to learn Fedify and create ActivityPub server software.We assume that you have experience in creating web applications using HTML and HTTP, and that you understand command-line interfaces, SQL, JSON, and basic JavaScript. However, you don't need to know TypeScript, JSX, ActivityPub, or Fedify—we'll teach you what you need to know about these as we go along.You don't need experience in creating ActivityPub software, but we do assume that you've used at least one ActivityPub software like Mastodon or Misskey. This is so you have an idea of what we're trying to build.Goals ​In this tutorial, we'll use Fedify to create a single-user microblog that can communicate with other federated software and services via ActivityPub. This software will include the following features:Only one account can be created.Other accounts in the fediverse can follow the user.Followers can unfollow the user.The user can view their list of followers.The user can create posts.The user's posts are visible to followers in the fediverse.The user can follow other accounts in the fediverse.The user can view a list of accounts they are following.The user can view a chronological list of posts from accounts they follow.To simplify the tutorial, we'll impose the following feature constraints:Account profiles (bio, photos, etc.) cannot be set.Once created, an account cannot be deleted.Once posted, a...