A Desert Outpost I Designed!

Tumblr Hack Day, December 2021 Edition

It was Hack Day once again at Tumblr! A couple of times per year we grind everything to a halt and spend 24 hours working on whatever we want and see how far we can get with our hacks. Here are some of the projects that got made for Hack Day! Some of these things you may end up seeing on the site…

Twitch Embeds

Wesley hacked together the ability to post Twitch streams to Tumblr! These can be live streams or clips.

Tumblr to Discord

@cyle put together a very simple webhook integration between Tumblr and Discord so you can send events about your blog to a Discord server:

Custom Tumblr logos on mobile

@mlu, @dakotairene, and friends hacked together the ability for us to put custom Tumblr logos in the mobile apps’ dashboard tab bar, like we do on the web!

Tumblr Time Machine

Lucila constructed an elaborate Tumblr Time Machine, so you can filter search results to a specific year:

Stay tuned to the @changes blog to see if any of these hacks make it on Tumblr for real!

Bon voyage @brickwhartley!

STAR WARS APPRECIATION WEEK Day 1: favourite movie

Don’t be too proud of this technological terror you’ve constructed. The ability to destroy a planet is insignificant next to the power of the Force. ― Star Wars: A New Hope (1977)

Crab hell compilation for those of yall on mobile who cant see em <3

That's why I chose a work from home job, nobody knows I'm wearing my bugs bunny jumpsuit on an all-team video call. Wait...

the most fictional thing about series and movies is people all dressed up at home

please don't ever come to house without warning first or you'll find me in my pjs

StreamBuilder: our open-source framework for powering your dashboard.

Today, we’re abnormally jazzed to announce that we’re open-sourcing the custom framework we built to power your dashboard on Tumblr. We call it StreamBuilder, and we’ve been using it for many years.

First things first. What is open-sourcing? Open sourcing is a decentralized software development model that encourages open collaboration. In more accessible language, it is any program whose source code is made available for use or modification as users or other developers see fit.

What, then, is StreamBuilder? Well, every time you hit your Following feed, or For You, or search results, a blog’s posts, a list of tagged posts, or even check out blog recommendations, you’re using this framework under the hood. If you want to dive into the code, check it out here on GitHub!

StreamBuilder has a lot going on. The primary architecture centers around “streams” of content: whether posts from a blog, a list of blogs you’re following, posts using a specific tag, or posts relating to a search. These are separate kinds of streams, which can be mixed together, filtered based on certain criteria, ranked for relevancy or engagement likelihood, and more.

On your Tumblr dashboard today you can see how there are posts from blogs you follow, mixed with posts from tags you follow, mixed with blog recommendations. Each of those is a separate stream, with its own logic, but sharing this same framework. We inject those recommendations at certain intervals, filter posts based on who you’re blocking, and rank the posts for relevancy if you have “Best stuff first” enabled. Those are all examples of the functionality StreamBuilder affords for us.

So, what’s included in the box?

The full framework library of code that we use today, on Tumblr, to power almost every feed of content you see on the platform.

A YAML syntax for composing streams of content, and how to filter, inject, and rank them.

Abstractions for programmatically composing, filtering, ranking, injecting, and debugging streams.

Abstractions for composing streams together—such as with carousels, for streams-within-streams.

An abstraction for cursor-based pagination for complex stream templates.

Unit tests covering the public interface for the library and most of the underlying code.

What’s still to come

Documentation. We have a lot to migrate from our own internal tools and put in here!

More example stream templates and example implementations of different common streams.

If you have questions, please check out the code and file an issue there.

hey it was actually really funny that blazing other peoples posts came out on 4/20 and no one has mentioned that. good job staff thank you staff