Web · 2023

Legacy App Rescue

Diagnosed and fixed critical performance issues in a 6-year-old Rails app — 10x speed improvement.

Legacy App Rescue — Web project for a logistics company

The challenge

Critical pages timing out under load; original developers gone; no tests.

What we built

Profiling, query optimisation, caching with Redis, test coverage and a CI pipeline for safe deploys.

Results

  • 10x faster critical pages
  • Zero downtime migration
  • Deploys from hours to minutes
More work

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