Elixir in Practice

Discover how companies reduce their infrastructure costs by 50 to 99% and boost their performance by migrating to Elixir

50-99%
Server Reduction
$2M+
Annual Savings
5-20x
Faster Performance
5
Engineers Managing 12M+ Users

Flagship Success Stories

Real companies that transformed their infrastructure with Elixir, achieving dramatic server reductions and cost savings while improving performance.

Veeps

Live Streaming
20 servers → 2 servers
90% Reduction

Challenge: Ruby on Rails backend couldn't scale to handle hundreds of thousands of simultaneous viewers for major artist events.

Results:

  • Handled 83x more concurrent users
  • Replaced 20 Rails nodes with just 2 Elixir nodes
  • Enabled hosting of world's largest ticketed livestreams
  • Entire system rewritten in Elixir in 8 months
Full story on elixir-lang.org

Pinterest

Social Media
30 servers → 15 servers
50% + $2M+ Savings

Challenge: Java notification system couldn't efficiently serve 463M monthly active users.

Results:

  • 14,000 notifications/sec with 500μs response times
  • 10x code reduction (10,000→1,000 lines)
  • Over $2M annual server cost savings
  • Additional spam system: 1,400→70 servers (95% reduction)
Full story on Pinterest Engineering Blog

French Ministry of Ecological Transition

Government
National Platform
Built on Elixir

Challenge: Create a unified transport data ecosystem to comply with new European regulations and make public data accessible.

Achievement:

  • National access point for all French transport data
  • Integration of multiple complex formats (GTFS, SIRI, NeTEx)
  • Stable, flexible real-time platform
  • Seamless orchestration of heterogeneous systems
Full story on elixir-lang.org

Serverless Migration

Startup
$30,240/month → $174/month
99.4% Cost Reduction

Challenge: AWS Lambda + API Gateway costs spiraling out of control with growth.

Transformation:

  • Eliminated expensive API Gateway bottlenecks
  • Simplified architecture and development
  • Saved ~$30k monthly in infrastructure costs
  • Better performance and reliability
Full story on Medium
More success stories on elixir-lang.org

Trusted Across Industries

From startups to Fortune 500 companies, organizations across every sector rely on Elixir for high-performance, cost-effective infrastructure.

Social & Communication

  • WhatsApp - 2B+ users, 50B+ messages/day
  • Discord - 12M+ concurrent users
  • Pinterest - 463M monthly active users
  • Change.org - Social impact platform

B2B & Technology

  • Walnut - Hypergrowth startup
  • Betty Blocks - No-code development
  • Moz Pro - SEO analytics
  • Paraxial.io - Application security

Media & Entertainment

  • Veeps - Live concert streaming
  • Financial Times - Business news
  • Lonely Planet - Travel content
  • Cyanview - Live broadcast tooling

Education

  • NoRedInk - Online writing & grammar curriculum
  • Class Solver - Student placement & class optimization

Healthcare

  • Elixir NZ - Cloud-based medical records
  • Pando Health - Secure clinical communications

E-commerce & Retail

  • PepsiCo - $2B eCommerce revenue
  • Form & Thread - Luxury e-commerce
  • US Beauty Services - 1,000 franchises

Logistics & Supply Chain

  • Quiqup - On-demand logistics & delivery services
  • Delhivery - Large-scale supply chain management

Fintech

  • Fitzdares - Luxury bookmaker
  • LiveFlow - Financial reporting automation
  • Flipay - Thai fintech startup

Automotive & IoT

  • RemotiveLabs - Volvo Cars early adopter
  • AutoTech - Vehicle manufacturing

Migration Scenarios

Discover different migration scenarios to Elixir and their concrete results.

Ruby on Rails → Elixir

70-95% server reductions
  • Familiar syntax for Ruby developers
  • Better concurrency for real-time features
  • Dramatic reduction in server requirements
Examples: Veeps (20→2), Betty Blocks (70% reduction)

Java/JVM → Elixir

Multi-million dollar savings
  • Eliminated Java threading limitations
  • Reduced memory overhead significantly
  • Zero-downtime deployments vs Java restarts
Examples: Pinterest ($2M+ savings), Financial Times

Serverless → Elixir

Up to 99.4% cost reductions
  • Eliminated expensive API Gateway costs
  • Simplified architecture and deployment
  • Better performance and reliability
Examples: $30k→$174/month migration

Node.js → Elixir

80-95% memory reduction
  • Eliminated Node.js single-threaded bottlenecks
  • Massive memory usage improvements
  • Better handling of CPU-intensive operations
Examples: Change.org (1B+ emails/month), social impact platform

Microservices → Elixir

Consolidated complexity, reduced costs
  • Eliminated inter-service communication overhead
  • Reduced operational complexity and monitoring
  • Single deployment vs multiple service coordination
Examples: Moz Pro (SEO analytics), Lonely Planet (travel content)

Built on Elixir from Day 1

Enterprise scale, startup costs
  • No migration complexity or risk
  • Scales seamlessly with business growth
  • Small teams managing massive scale
Examples: Discord, Walnut (1000x growth)

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