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Engineering — Catching Compromised Cookies

Catching Compromised Cookies

Slack uses cookies to track session states for users on slack.com and the Slack Desktop app. The ever-present cookie banners have made cookies mainstream, but as a quick refresher, cookies are a little piece of client-side state associated with a website that is sent up to the web server on every request. Websites use this…

RSRyan Slama·June 24, 2024Engineering
Engineering — T-Shaped vs. V-Shaped Designers — Smashing Magazine

T-Shaped vs. V-Shaped Designers — Smashing Magazine

Job openings typically cast a very restrictive frame for candidates, with long lists of expectations and requirements. But what if this narrow focus can overlook the value of “V”-shaped designers who excel by crossing boundaries, connecting dots, and innovating beyond rigid boxes?

VFVitaly FriedmanVitaly Friedman·June 19, 2024Engineering
Engineering — Demystifying INP: New tools and actionable insights

Demystifying INP: New tools and actionable insights

Deep dive into Interaction to Next Paint (INP) optimization: A technical guide exploring real-world strategies used to improve INP on nextjs.org. Learn how to tackle common challenges and enhance responsiveness in your web applications.

VVercel·June 12, 2024Engineering
Engineering — Data Fetching Patterns in Single-Page Applications

Data Fetching Patterns in Single-Page Applications

When a single-page application needs to fetch data from a remote source, it needs to do so while remaining responsive and providing feedback to the user during an often slow query. Five patterns help with this. Asynchronous State Handler wraps these queries with meta-queries for the state of the query. Parallel Data Fetching minimizes wait time. Fallback Markup specifies fallback displays in marku

JQJuntao QIU | 邱俊涛·May 29, 2024Engineering
Engineering — Vercel Ship 2024 recap

Vercel Ship 2024 recap

Vercel Ship 2024 highlighted the integrations, ecosystem, and teams building the web's best products. Read the recap to catch up on all our announcements.

VVercel·May 24, 2024Engineering
Engineering — Say hello to the SPORTech collection

Say hello to the SPORTech collection

Whether you’re a rookie coder or a seasoned pro, our new SPORTech shop collection is tailored for you. And here’s the kicker: we’re offering free delivery worldwide over $20 until May 20!

LSLavinia SfetcuLavinia Sfetcu·May 13, 2024Engineering
Engineering — Data Platform Explained Part II

Data Platform Explained Part II

Check out , where we started sharing the journey of building a data platform, its building blocks, and the motivation for investing into building a platformized solution at Spotify.

AKAnastasia Khlebnikova and Carol Cunha·May 1, 2024Engineering
Engineering — Fixed-Power Designs: It’s Not IF You Peek, It’s WHAT You Peek at

Fixed-Power Designs: It’s Not IF You Peek, It’s WHAT You Peek at

TL;DR Sometimes we cannot estimate the required sample size needed to power an experiment before starting it. To alleviate this problem, we could run a sequential test or an A/A test. However, sequential tests are typically less sensitive and introduce bias to the treatment effect estimator. Moreover, A/A tests prolong the duration of the experiment and still don’t guarantee that the resulting sam

SESpotify Engineering·May 1, 2024Engineering
Engineering — Highlights from Git 2.45

Highlights from Git 2.45

Git 2.45 is here with experimental support for reftables, and SHA-256 interoperability. Get our take on the latest here.

TBTaylor BlauTaylor Blau·April 29, 2024Engineering
Engineering — Lessons Learned After Selling My Startup — Smashing Magazine

Lessons Learned After Selling My Startup — Smashing Magazine

Business acquisitions are common but often shrouded in mystery because they happen behind closed doors. In this article, Yaakov details the story of his company and the journey it took him on, shedding light on the process of selling a business and what he learned from the experience.

YYaakovkardaYaakovkarda·April 29, 2024Engineering
Engineering — The End Of The Free Tier — Smashing Magazine

The End Of The Free Tier — Smashing Magazine

Free-tier pricing is a common marketing strategy. “Free” gets people in the door and allows them to settle in and see how things work. But, as Juan Diego Rodriguez explains, the practice of free *tiers* is often conflated with free *trials*. And while the distinction may be nuanced, the consequences of sunsetting free-tier pricing may be huge.

JDJuan Diego RodriguezJuan Diego Rodriguez·April 26, 2024Engineering
Engineering — PGconf.de 2024 in Munich

PGconf.de 2024 in Munich

I had the pleasure of attending PGConf.de in Munich on April 12, 2024. Here I report on my experiences and insights.

CBChristoph Berg·April 17, 2024Engineering