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this week's favorite

How Discord Handles Two and Half Million Concurrent Voice Users using WebRTC

From the very start, we made very conscious engineering and product decisions to keep Discord well suited for voice chat while playing your favorite game with your friends. These decisions enabled us to massively scale our operation with a small team and limited resources.

From Prototype to Production: Lessons from Building and Scaling Reddit's Ad Serving Platform with Go

The Reddit engineering team recently introduced Go into their stack to write a new ad-serving system to replace a third party system. Deval Shah talks us through the architecture of the new service, the Reddit team's experience using Go for the first time, and all the lessons they've learned from using Go to build this ad server.

What is Systems Programming, Really?

I have a gripe with the phrase "systems programming." To me, it always seemed to unnecessarily combine two ideas: low-level programming (dealing with implementation details of the machine) and systems design (creating and managing a complex set of interoperating components). Why is that the case? How long has this been true? And what could we gain from redefining the idea of systems?

Conservative web development

Today I turned off my ad blocker, enabled JavaScript, opened my network monitor, and clicked the first link on Hacker News - a New York Times article. It started by downloading a megabyte of data as it rendered the page over the course of eight full seconds. The page opens with an advertisement 281 pixels tall, placed before even the title of the article.

23 guidelines for writing readable code

Reading someone else's code can be quite confusing. Hours can go on issues that should have been fixed in minutes. In this article, I would like to share some advice on how to write code that will be easier to understand and maintain.

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