--- title: WhatsApp, Discord, and the Secret to Handling Millions... description: Discover the secret behind handling millions of concurrent users with ease using the Erlang Virtual Machine (BEAM) and Elixir. Learn about the origins of... canonical: https://daily.dev/posts/whatsapp-discord-and-the-secret-to-handling-millions-of-concurrent-users-epyoa3tsp twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: WhatsApp, Discord, and the Secret to Handling Millions of Concurrent Users | daily.dev og:description: Discover the secret behind handling millions of concurrent users with ease using the Erlang Virtual Machine (BEAM) and Elixir. Learn about the origins of... og:url: https://daily.dev/posts/whatsapp-discord-and-the-secret-to-handling-millions-of-concurrent-users-epyoa3tsp og:image: https://api.daily.dev/og/posts/EPyOa3TsP.png og:image:alt: WhatsApp, Discord, and the Secret to Handling Millions of Concurrent Users og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # WhatsApp, Discord, and the Secret to Handling Millions of Concurrent Users **[Community Picks](https://daily.dev/sources/community)** · 9 min read · 179 upvotes · 6 comments ## Summary Discover the secret behind handling millions of concurrent users with ease using the Erlang Virtual Machine (BEAM) and Elixir. Learn about the origins of Erlang and Elixir, the core features that make BEAM a secret weapon for real-time applications, and real-life case studies from WhatsApp and Discord. Other companies such as Spotify, Pinterest, Pepsico, Financial Times, and Heroku have also adopted Erlang-based languages for high concurrency, fault tolerance, and scalability. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Community discussion Top comments from developers on daily.dev. **@kt2312312** · 5 upvotes > BEAM is so underrated and underused. Amazing Read **@judevector** · 0 upvotes > Wow this is so amazing, I learnt a lot from this article and the power of Elixir in building a highly scalable app --- Tags: [#elixir](https://daily.dev/tags/elixir) [View this post on daily.dev](https://daily.dev/posts/whatsapp-discord-and-the-secret-to-handling-millions-of-concurrent-users-epyoa3tsp) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"WhatsApp, Discord, and the Secret to Handling Millions of Concurrent Users","url":"https://daily.dev/posts/whatsapp-discord-and-the-secret-to-handling-millions-of-concurrent-users-epyoa3tsp","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/whatsapp-discord-and-the-secret-to-handling-millions-of-concurrent-users-epyoa3tsp"},"datePublished":"2024-06-04T16:43:50.770Z","dateModified":"2024-10-05T16:27:01.817Z","description":"Discover the secret behind handling millions of concurrent users with ease using the Erlang Virtual Machine (BEAM) and Elixir. 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