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DuolingoCompany

Language-learning app and platform.

4 things

Amazon AuroraService

liked

We saved several hundred thousand dollars a year by switching a single database to Aurora I/O optimized!

Duolingo on cutting cloud spend by switching a database to Aurora I/O optimized

blog.duolingo.com ↗·2024-10-30Wrong?

KotlinSoftware

recommended

Kotlin is far less verbose than Java, making it faster and easier to both write and (more importantly!) maintain.

Duolingo on migrating its Android app from Java to 100% Kotlin

blog.duolingo.com ↗·2020-04-06Wrong?

ScalaSoftware

recommended

Scala is a language that seems to have learned from the pain points of other languages, and proposes to solve some of them.

Duolingo on rewriting its Session Generator from Python to Scala

blog.duolingo.com ↗·2017-01-31Wrong?

PythonSoftware

mixed

Python is generally not thread-safe. This prevents developers from using in-memory caches to their full potential.

Duolingo on why Python stopped fitting its complex Session Generator

blog.duolingo.com ↗·2017-01-31Wrong?

Every entry is a verbatim quote and a link to the public post it came from. Nothing is paraphrased. If it is not on record somewhere public, it is not here.

The verdict is what they actually said: loved and liked are explicit; recommended means they told others to get it; uses means they only say they use it; read is a book on their public shelf with no verdict; mixed and disliked are kept too.

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The small bar beside a date shows how dated a recommendation is for its kind of thing.

The bar shows how dated a recommendation is, for its kind of thing. Full and green is recent. It drains, and turns amber and then grey, as the post gets older.

What counts as old depends on the thing. A laptop praised four years ago has been replaced twice; a book loved twenty years ago is probably still loved. The bar is empty after about:

A striped bar means the post carries no date and the date shown is an estimate. No date at all, no bar.