The Stream Blog

Stream raises $3 Million from Arthur Ventures

We are excited to announce that Stream has raised $3 million from Arthur Ventures with participation from Galvanize, Techstars, and others. This puts Stream’s total funding at $4.75 million.  Stream will use this investment to expand its team and accelerate product development. Stream (getstream.io) is an API for building, scaling and personalizing feeds. Over 500 companies […]

Examining Decentralized Social Networks

Most companies who create a social network do so with the end goal of collecting information, interests and habits of their users in order to monetize that data (usually through advertising). They guard this data heavily and many of the largest social networks are trusted enough to be Identity Providers for OAuth-based authentication and single-sign-on […]

Best Practices for Recommendation Engines

In this blogpost I will describe how to implement a feature-rich activity feed that will make relevant and accurate personalization algorithms easier to implement. As we have already explored in previous blog posts, app personalization is linking activity feeds and user engagement data. In most cases, a well thought out feed structure provides valuable information […]

Based Mobile: A free UI Kit for Mobile Social Media

When we released Based UI Kit (our first UI Kit),  we never expected it to be used by so many people. We heard from Designers, Developers and Product Owners that Based UI really was a great asset. The only downside to the Based UI Kit was that it wasn’t focused enough on mobile. You could […]

Creative Developer Marketing

If your inbox is anything like mine you get an endless amount of promotional spam. The worst offenders are recruiters, companies selling explainer videos and offshored development shops. The marketing departments at those companies have a serious lack of imagination. I’d like to think that there are better ways to reach your customer base. My […]

How We Onboard Users at Stream

Intro Building an easy-to-use API is hard, but onboarding shouldn’t be. It’s important that we, at Stream, make the onboarding experience as painless as possible for developers. Many of you have told us that our 5 minute interactive API tutorial helped you to quickly understand Stream’s API. Today, we wanted to announce that we’ve made […]

Activity Stream Personalization

Personalization comes in many flavors, and the Data Science team at Stream helps you build your own personalization engine based on your specific needs. In conjunction with our Analytics client, we can use both engagement and feed data to power and improve your app’s experience using cutting edge Machine Learning algorithms. Here are some of […]

Building a Performant API using Go and Cassandra

Introduction Software performance is critical to a SaaS company like Stream and while the majority of our infrastructure is written in Python, we are actively porting portions of our code base to Go. Stream is an API for building scalable feeds and now handles over 20 billion feed updates a month. While Python has been […]

Factorization Machines for Recommendation Systems

As a Data Scientist that works on Feed Personalization, I find it it important to stay up to date with the current state of Machine Learning and its applications. Most of the time, using some of the better-known recommendation algorithms yields good initial results; however, sometimes a change in the model is essential to provide customers […]

Algolia Review – A Hosted Search API Reviewed

Today we’re reviewing Algolia. This blog post is part of our review series where we uncover best-of-class SaaS solutions for developers. Reviewing other API services helps us come up with ideas for improving Stream, our API for building scalable and perisonalized feeds. You can try an interactive tutorial of Stream here. Getting Started with Algolia […]

Stream in 2017

Tommaso and I started Stream a little over 2 years ago. It’s been a crazy ride, from our first customer to joining Techstars in NYC. Our first funding round was a whirlwind, but we now have offices in both Boulder, Colorado and Amsterdam, The Netherlands, and we couldn’t be happier as a team. Today over […]

Example Ranking Methods for Your Feeds

In this short tutorial we will show you how to use Custom Ranking for your activity streams and news feeds. By default all feeds on Stream are ranked chronologically. Custom ranking allows you to take full control over how your feeds are sorted. Some common use cases include: Showing popular activities higher in the feed […]