---
title: "Pinterest and Elixir · Elixir Community"
description: "Used Elixir for notifications, API rate limiting and the Guardian anti-spam engine."
url: https://elixir.community/companies/pinterest/
---

[All companies](https://elixir.community/companies)

Pinterest

# Pinterest

Used Elixir for notifications, API rate limiting and the Guardian anti-spam engine.

## How Pinterest uses Elixir

Pinterest used Elixir for high-volume notification delivery and API rate limiting. It also built Guardian, a real-time query and rules engine for detecting spam.

Guardian combines user events and spam signals into a dataset that analysts can query and use to create rules. Elixir coordinates concurrent work, with lower-level performance-sensitive operations implemented in C. These are documented implementations from 2015-2021, not a claim about the entire current Pinterest stack.

Industry

Social discovery

Website

[pinterest.com](https://www.pinterest.com/)