Fedify: ActivityPub server framework

@fedify@hollo.social

Fedify is an #ActivityPub server framework in #TypeScript & #JavaScript. It aims to eliminate the complexity and redundant boilerplate code when building a federated server app, so that you can focus on your business logic and user experience.

The key features it provides currently are:

Type-safe objects for Activity Vocabulary (including some vendor-specific extensions)
#WebFinger client and server
HTTP Signatures & Linked Data Signatures & Object Integrity Proofs
Middleware for handling webhooks
#NodeInfo protocol
#Node.js, #Deno, and #Bun support
CLI toolchain for testing and debugging

If you're curious, take a look at the #Fedify website! There's comprehensive docs, a demo, a tutorial, example code, and more:

https://github.com/dahlia/microblog

、、、

@dampuzakura@fedibird.com

dahlia/microblog: A simple federated microblog example using Fedify for educational purpose

Windowsで試してみた

> This program is for educational purposes only. Do not use it for any other purpose, since it has not been tested for security.
だけどこれ普通に使えたら便利そう

https://fedify.dev/
@fedify

https://fedify.dev/tutorial/microblog

@hongminhee@fosstodon.org · Reply to 洪民憙 (Hong Minhee)

Want to build your own #ActivityPub software? Follow the tutorial for #Fedify, the ActivityPub server framework!

@fedify@hollo.social

The version 1.1.0 of #Fedify, an #ActivityPub server framework, released! The key changes include:

Added uility functions for traversing remote collections. See also the Traversing remote collections section in the docs.
Added EmojiReact class to Activity Vocabulary API. [FEP-c0e0]
Added successor property to the Actor types in the Activity Vocabulary API.
Added DidService class to Activity Vocabulary API. [FEP-9091]
Added Export class to Activity Vocabulary API. [FEP-9091]
Added service property to the Actor types in the Activity Vocabulary API. [FEP-9091]
The default time window for verifying HTTP Signatures of incoming requests is now an hour (was a minute). This new default window is according to the ActivityPub and HTTP Signatures document.
In the fedify inbox command's web interface, the Raw Activity tab is added to show the raw JSON object of the received activity.

For details, see the full changelog as well!

@fedify@hollo.social

The version 1.1.0 of #Fedify, an #ActivityPub server framework, released! The key changes include:

Added uility functions for traversing remote collections. See also the Traversing remote collections section in the docs.
Added EmojiReact class to Activity Vocabulary API. [FEP-c0e0]
Added successor property to the Actor types in the Activity Vocabulary API.
Added DidService class to Activity Vocabulary API. [FEP-9091]
Added Export class to Activity Vocabulary API. [FEP-9091]
Added service property to the Actor types in the Activity Vocabulary API. [FEP-9091]
The default time window for verifying HTTP Signatures of incoming requests is now an hour (was a minute). This new default window is according to the ActivityPub and HTTP Signatures document.
In the fedify inbox command's web interface, the Raw Activity tab is added to show the raw JSON object of the received activity.

For details, see the full changelog as well!

@hongminhee@fosstodon.org

Let's create your own #ActivityPub implementation using #Fedify!

@hongminhee@fosstodon.org

Even though I am a slow coder, it only took me about a month to create most of #Hollo's features in #Fedify. Having a framework makes a huge difference in productivity.

https://discord.gg/hGXXxUq2jK

Hollo

@hollo@hollo.social

We now have #Hollo and #Fedify's official #Discord server! Join us now!

https://fedibird.com/@hongminhee/113331365440336287

@fedify@hollo.social

The Japanese version of the #Fedify tutorial, Creating your own federated microblog, is now available in paperback!

Note that the AsciiDoc source of the book is fully open source, which is available at this repository!

@hongminhee@fedibird.com · Reply to 洪民憙（ホン・ミンヒ）

印刷所に注文した『自分だけのフェディバースのマイクロブログを作ろう！』の紙の本、到着した‼️

https://matrix.to/#/#fedify:matrix.org

@hongminhee@fedibird.com · Reply to 洪民憙（ホン・ミンヒ）

印刷所に注文した『自分だけのフェディバースのマイクロブログを作ろう！』の紙の本、到着した‼️

Thibaultmol 🌈

@thibaultmol@en.osm.town · Reply to Fedify: ActivityPub server framework

@fedify good to mention: there is also a Matrix space for those who are like "why discord?!"

https://discord.gg/bhtwpzURwd

@fedify@hollo.social

We now have #Fedify and #Hollo's official #Discord server! Join us now!

@fedify@hollo.social

#Fedify now has an #AMQP driver! This means you can use #RabbitMQ as Fedify's message queue. To use it, first install the @fedify/amqp package, then set it up like below:

import { createFederation } from "@fedify/fedify";
import { AmqpMessageQueue } from "@fedify/amqp";
import { connect } from "amqplib";

const federation = createFederation({
  queue: new AmqpMessageQueue(await connect("amqp://localhost")),
  // ... other configurations
});

Oh, and we've also added results from AmqpMessageQueue to our benchmarks.

ALT text
The results of the benchmarks for Fedify's outbox queue.

@hongminhee@fosstodon.org

#Fedify takes 20 minutes for GitHub Actions to finish. What do you think?

That's too slow. Optimize it now.0 (0%)
Not fast, but tolerable.0 (0%)

@fedify@hollo.social

Fedify is an #ActivityPub server framework in #TypeScript & #JavaScript. It aims to eliminate the complexity and redundant boilerplate code when building a federated server app, so that you can focus on your business logic and user experience.

The key features it provides currently are:

Type-safe objects for Activity Vocabulary (including some vendor-specific extensions)
#WebFinger client and server
HTTP Signatures & Linked Data Signatures & Object Integrity Proofs
Middleware for handling webhooks
#NodeInfo protocol
#Node.js, #Deno, and #Bun support
CLI toolchain for testing and debugging

If you're curious, take a look at the #Fedify website! There's comprehensive docs, a demo, a tutorial, example code, and more:

@fedify@hollo.social

#Fedify now has an #AMQP driver! This means you can use #RabbitMQ as Fedify's message queue. To use it, first install the @fedify/amqp package, then set it up like below:

import { createFederation } from "@fedify/fedify";
import { AmqpMessageQueue } from "@fedify/amqp";
import { connect } from "amqplib";

const federation = createFederation({
  queue: new AmqpMessageQueue(await connect("amqp://localhost")),
  // ... other configurations
});

Oh, and we've also added results from AmqpMessageQueue to our benchmarks.

https://github.com/dahlia/fedify

@fedify@hollo.social

The #Fedify repository has reached 500 stars! Thank you everyone!

https://event.ospn.jp/osc2024-fall/

@fedify@hollo.social

10月26日（土）に開催されるOSC 2024 Tokyo/FallにFedify/Hollo合同で出展します！可愛いFedifyのロゴのシールと『自分だけのフェディバースのマイクロブログを作ろう！』日本語版の紙の本を持って行く予定です。よろしくお願いします。

#Fedify #Hollo #osc24tk

https://zenn.dev/hongminhee/books/4a38b6358a027b

@hongminhee@fedibird.com

自作ActivityPubサーバーに興味が有る方は、ActivityPubサーバーフレームワークであるFedifyを一度使ってみてください。ちなみに、公式日本語チュートリアルである『自分だけのフェディバースのマイクロブログを作ろう！』がZennにも掲載されています。

@fedify@hollo.social

What's your biggest wish for Fedify?

RabbitMQ driver5 (21%)
Kafka driver3 (13%)
AWS SQS driver2 (8%)
Nuxt integration3 (13%)
AdonisJS integration2 (8%)
Fastify integration4 (17%)
NestJS integration3 (13%)
Koa integration2 (8%)

@fedify@hollo.social

If you're considering creating your own implementation of #ActivityPub, consider #Fedify.

Implementing ActivityPub from scratch requires more than you might think. WebFinger, HTTP Signatures, Linked Data Signatures, Object Integrity Proofs, NodeInfo, queues for sending and receiving activities, followers collection synchronization, remote object lookups, interoperability with Mastodon, Akkoma, Misskey, Threads, and more…

Just use Fedify and feel free to create your own ActivityPub implementation!

@fedify@hollo.social

Did you know that? The #Fedify CLI has a command called fedify lookup, which can easily look up ActivityStreams objects on servers with authorized fetch (a.k.a. secure mode) enabled by turning on the -a/--authorized-fetch flag.

Here's demo!

#fedidev #ActivityPub

@fedify@hollo.social · Reply to Steve Bate

@steve Yes, if you specify queue option of createFederation() function, incoming and outgoing activities are queued and processed by the background workers.

See also the following docs:

https://github.com/dahlia/fedify-queue-benchmarks

@fedify@hollo.social

If you're on the fence about which driver to choose for #Fedify's message queue, here's a benchmark that just came out. In addition to no queue, we compare 5 drivers, for a total of 11 setups:

Curious to see the results? Check out the GitHub repository!

https://fosstodon.org/@hongminhee/113247723368865290

https://github.com/dahlia/fedify-queue-benchmarks

@hongminhee@fosstodon.org · Reply to 洪民憙 (Hong Minhee)

@thisismissem Here's the benchmark, and while it contains some questionable results, the overall conclusion is as following:

• Response times are much faster with queues than without.
• Overall throughput is better without queues.
• However, some queue setups can achieve throughput close to that of no queue.

This benchmark assumes communication within a single node, so the effect of queues may be greater in real-world networks.

@fedify@hollo.social

If you're considering creating your own implementation of #ActivityPub, consider #Fedify.

Implementing ActivityPub from scratch requires more than you might think. WebFinger, HTTP Signatures, Linked Data Signatures, Object Integrity Proofs, NodeInfo, queues for sending and receiving activities, followers collection synchronization, remote object lookups, interoperability with Mastodon, Akkoma, Misskey, Threads, and more…

Just use Fedify and feel free to create your own ActivityPub implementation!

@hongminhee@fedibird.com

独自のActivityPubの実装を作りたい方は、Fedifyを検討してみてください。

ActivityPubをゼロから実装するには、想像以上に多くの物を作る必要が有ります。WebFinger、HTTP Signatures、Linked Data Signatures、Object Integrity Proofs、NodeInfo、アクティビティの送受信のキュー、フォロワーコレクションのシンクロ、リモートオブジェクトの照会、MastodonやMisskey等との相互運用性の為の雑多な処理まで…Fedifyを使えば簡単に自分だけのActivityPubの実装を作る事が出来ます！

#Fedify #ActivityPub #fedidev

Connected Places

@fediversereport@mastodon.social

New: Last Week in #Fediverse - ep 86

This week's news:
- Threads degrades their #activitypub integration, delaying posts by 15 minutes before they appear in the rest of the fediverse
- Website League is a new ActivityPub-based Island network, outside of the rest of the fediverse
- Ghost discusses their beta plans and pricing.

https://fediversereport.com/last-week-in-fediverse-ep-86/

https://github.com/dahlia/fedify/issues/146

@hongminhee@fosstodon.org

Adding vocabularies for FEP-9091 to #Fedify.

#fedidev #ActivityPub

@fedify@hollo.social

Did you know that? The #Fedify CLI has a command called fedify lookup, which can easily look up ActivityStreams objects on servers with authorized fetch (a.k.a. secure mode) enabled by turning on the -a/--authorized-fetch flag.

Here's demo!

#fedidev #ActivityPub

@hongminhee@fedibird.com

Fedifyを使うのを躊躇う理由が有れば？

#Fedify

機能不足0 (0%)
抽象化レベルが低い0 (0%)
TypeScriptに慣れていない、または好みではない0 (0%)
日本語の資料の少なさ0 (0%)
GhostとHollo以外の実例がな0 (0%)
その他（リプライで教えてください）0 (0%)

@fedify@hollo.social

Introducing Fedify: Build Your Own Fediverse App with Ease! 🚀

Are you excited about the #fediverse but find implementing #ActivityPub daunting? Meet #Fedify, a #TypeScript framework that simplifies building federated server apps. Whether you're creating the next Mastodon, Pixelfed, or something entirely new, Fedify has you covered.