Improving the Quality of Recommended Pins with Lightweight Ranking

The Pinterest corpus is composed of billions of Pins, however, each Pinner only sees a small subset based on their interests when…

Whole lot of heat, not a lot of maps

Project Lighthouse — Part 2: Measurement with anonymized data

Introduction In June, the Airbnb…

Seamlessly Swapping the API backend of the Netflix Android app

by Rohan Dhruva, Ed Ballot As Android developers, we usually have the luxury of treating our backends as magic boxes running in the cloud, faithfully returning us JSON. At Netflix, we have adopted the Backend for Frontend (BFF) pattern: instead of having one general purpose “backend API”, we have one…

Kicking Off Our New KFC Partnership

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Lyrics in French Hip-hop: curious? IAM, and you should be too.

Introduction In 2018, hip-hop was the most consumed genre in the United States. Since then, many analyses have dived deep in understanding the lyrics of those artists. However, as the pioneer of music streaming in France, we wanted to know more about how our local stars created their art. With the…

HDMI — Scaling Netflix Certification

At Netflix, we take the task of preserving the creative vision of our content all the way to a subscriber TV screen very seriously. This significantly increases the scope of our application integration and certification processes for streaming devices like set-top-boxes (STBs) and…

Multi-task Learning and Calibration for Utility-based Home Feed Ranking

Home feed is one of the most important surfaces at Pinterest that drives a significant portion of engagement from the more than 400+ million people who visit each month. From a…

How to move large-scale React UI-components codebase to TypeScript

Hi, my name is Ivan Grekov and I am a frontend developer at Bumble — the parent company operating Badoo and Bumble apps Our frontend team’s main responsibilities are to deliver new user interfaces and support existing ones across our different applications, mostly within Badoo and Bumble websites. At a…

Edgar: Solving Mysteries Faster with Observability

by Elizabeth Carretto Our Team — Kevin Lew, Maulik Pandey, Narayanan Arunachalam, Dustin Haffner, Andrei Ushakov, Seth Katz, Greg Burrell, Ram Vaithilingam, Mike Smith and Elizabeth Carretto Everyone loves Unsolved Mysteries. There’s always someone who seems like the surefire culprit. There’s a clear motive, the perfect opportunity, and an…

Zendesk’s Global Mesh Network- Part 2

Project Lighthouse — Part 1: P-sensitive k-anonymity

Introduction In June, the Airbnb Anti-Discrimination product team announced Project Lighthouse, an initiative with the goal…

Key Challenges with Quasi Experiments at Netflix

At Netflix, when we can’t run A/B experiments we run quasi experiments! We run quasi experiments with various objectives such as non-member experiments focusing on acquisition, member experiments focusing on member engagement, or video streaming experiments focusing on content delivery. Consolidating on one methodology…

Data Catalogs, the Luxury of Choice

Optimized shot-based encodes for 4K: Now streaming!

Netflix has an ever-expanding collection of titles which customers can enjoy in 4K resolution with a suitable device and subscription plan. Netflix creates premium bitstreams for those titles in addition to the catalog-wide 8-bit stream profiles¹. Premium features comprise a…

Partitioning Pinlater for Fun(?) and Profit(!)

Contained within the November 2015 announcement of the open-sourcing of Pinlater, our asynchronous job execution system, was a description of some of the improvements that had been made to the system since the original 2014 blog post describing its creation. Notable among…

Product feedback is a gift

Because many of us are athletes…

CPU Throttling in Kubernetes: A Postmortem

Kubernetes is a crucial part of our infrastructure. We don’t just deploy applications on Kubernetes in production, but we also use it heavily for our CI/CD and developer infrastructure. While developing our CI/CD infrastructure, we dealt with a particular performance issue of our dev and CI environments taking up a…

Private libraries in Android — why you should consider it.

Part 1: Private libraries in Android — why you should consider it Part 2: Private libraries in Android — how to manage them Libraries are one of the foundations of Android development. Think about all dependencies in your Android projects…

Solving Organizational Issues like a Product Manager

At commercetools, we strive to have a working environment where everyone and every team feels, and is, valued/respected. To strive towards something also means that we’re never quite satisfied with the status quo, and constantly look for…

Powering inclusive search & recommendations with our new visual skin tone model

To truly bring everyone the inspiration to create a life they love, Pinterest is committed to content diversity and to developing inclusive search and recommendation engines…

Decoding user search queries

Query processing pipeline follows a modular and layered design where input…

Introducing On-Demand Grocery Delivery

As the pandemic continues to disrupt our everyday lives, DoorDash has been working hard to expand the products and services we offer to local businesses so that customers can access more of their favorite…

How we use AutoML, Multi-task learning and Multi-tower models for Pinterest Ads

People come to Pinterest in an exploration mindset, often engaging with ads the same way they do with organic Pins. Within ads our mission is to help Pinners go from inspiration to action by introducing them to the compelling products and services that…

prox part 4 — simplified redesign

Intro In Part 1 I described how the advanced type level programming techniques can be used to describe the execution of system processes. It was both a good playground to experiment with these and the result has been proven useful as we started to use it in more and more production…