Datadog Log Management from Zero to One

Datadog APM Trace Search from Zero to One is the first part of advanced techniques we use at Zendesk to plan capacity and keep performance characteristics of the multi-tenant system at expected levels. Response times vary between different API endpoints and customers, as the data set grows rapidly, and new…

Migrating to TypeScript: Five Practical Tips

Our strategy was fairly straightforward: first we added types to our core data models, and then we began writing new code…

Trace Event, Chrome and More Profile Formats on FlameScope

Less than a year ago, FlameScope was released as a proof of concept for a new profile visualization. Since then, it helped us, and many other users, to easily find and fix performance issues, and allowed us to see patterns that we had never noticed before in our profiles. As…

MezzFS — Mounting object storage in Netflix’s media processing platform

MezzFS (short for “Mezzanine File System”) is a tool we’ve developed at Netflix that mounts cloud objects as local files via FUSE. It’s used extensively in our media processing platform, which includes services like Archer and runs features like…

How Data Inspires Building a Scalable, Resilient and Secure Cloud Infrastructure At Netflix

Netflix’s engineering culture is predicated on Freedom & Responsibility, the idea that everyone (and every team) at Netflix is entrusted with a core responsibility and they are free to operate with freedom to satisfy their mission. This…

How to reduce the distance when the UX designer works remotely

As my colleague Ida explained, the product team has embraced vertical, cross-functional teams. Each vertical team has its own UX/UI designer that focuses on the team’s area of responsibility. I am one of them. However, we are not sitting in the same office as the rest of our vertical team…

Optimising relational databases with zero downtime

A case study of Badoo’s most loaded database Optimising relational databases is much harder in high-load circumstances: buying an even more powerful hardware is expensive, and one cannot just turn off the app at night to alter the database and migrate data. In this article I would like to tell you how we completely changed the inner structure…

“Hack as you are” — Story of a Hackathon at Deezer

Today, more and more employees decide to work for a company not only to climb the career ladder or for financial reasons, but in order to…

Deep Neural Networks & Image Captioning

Part 1: Helping our users find love on Badoo Badoo is the largest dating network in the world, with over millions users across 190 countries who upload over 10 million photos per day to our platform. These images provide us with a rich data set we can derive a wealth of insights from. Our Data Science team use image…

Badoo Android Architectural Journey

A talk presented at the Londroid meetup about the architectural journey of Android development at Badoo. The abstract: At Badoo, we have a long history when it comes to Android development. Since the beginning, the product has experienced huge growth, and our codebase and our team have grown with…

Swift Package Manager builds iOS frameworks (Updated. Xcode 10.2 Beta)

(Updated. Xcode 10.2 Beta) Swift Package Manager doesn’t work with iOS. That’s probably all you can say about the current state of SPM, but insomnia forced me to expand on the issue and compile the following essay. TL;DR Yes, you can build iOS frameworks with Swift Package Manager; Yes, you can adjust settings via .xcconfig…

GraphQL and REST Level 3 (HATEOAS)

The short answer to this question is that HATEOAS isn’t a good fit for most modern use cases for APIs. That is why after almost 20 years, HATEOAS still hasn’t gained wide adoption…

Launch quickly, inspect closely, iterate rapidly

Covering A/B tests with UI tests:

How to avoid getting tangled up in your own code Hi there! My name is Vitaliy Kotov and I spend most of my time working on automated testing issues at Badoo. In this article, I tell you all about how we have organised the UI testing work with our numerous A/B tests, the problems we have had to deal with…

Accelerating our Unprecedented Growth

Extending Vector with eBPF to inspect host and container performance

Improving the tools available to our engineers to help them diagnose, triage, and work through software performance challenges in the cloud is a key goal for the cloud performance engineering team at Netflix. Today we are excited to announce latency…

When pigs fly: optimising bytecode interpreters

“No matter how hard you try, you can’t make a racehorse out of a pig. You can, however, make a faster pig.” — A comment in the Emacs source code. Everyone knows that pigs can’t fly — just like everyone thinks they know that bytecode interpreters, as a technology for…

A Beginners Guide to Deploys and Releases

The process of releasing software to users at scale is one that can be particularly confusing for new software engineers, as most don’t have exposure to this part of the software development process until their first internship or job. I found this to be the case during my time at…

GraphQL adoption at commercetools

GraphQL adoption by our customers Over the last few months we have noticed that more and more customers are using…

Maintaining Binary Compatibility in Scala

Myntra Scheduler Service

Myntra has an in house service named Yantra. It is actually event processing engine that manages a state machine and triggers actions based on events and changes state. Yantra handles multiple event based state machine workflows like sending notifications, generating feeds and sending mailers on events, such as user have…

From Paris to Bordeaux, an interview with Deezer’s CTO

On this (special) occasion, the…

The Perfect Pair: Wines to Complement Your Delivery

How Indians did it last Valentine’s Day

It’s that one day, that’s all about your Bae. The season of love is officially here! Thoughtful trinkets, saucy surprises, lovey letters and gifts galore. Romance is indeed being delivered around town in quirky new ways. Love makes you do crazy things, they say. Here’s proof that love makes you…

Connecting people and possibility with Farming Hope and Imperfect

We recently celebrated the one-year anniversary of Project DASH, our initiative to fight hunger and reduce waste by powering deliveries of surplus food from businesses to nonprofits that serve people in need. We’re proud to spotlight a unique Project DASH community partnership. DoorDash and…