Case study · Education · React/Node · 3 months

EdTech Startup — Load Capacity Up 340%

Testing pyramid and performance optimization enabled rapid user growth without infrastructure bloat.

EdTech Startup — Load Capacity Up 340%

Context

  • Viral growth from 5K to 50K+ concurrent users crashed the platform during peak hours.
  • No load testing or performance benchmarks; reactive firefighting became the norm.

Actions

  • Established testing strategy: unit, integration, E2E, and load tests with clear ownership.
  • Optimized database queries and added Redis caching for frequent read paths.
  • Implemented auto-scaling policies and CDN for static assets.

Results

  • Platform handled 340% user growth without additional servers.
  • Page load time reduced 67% for the most-used student dashboard.
  • Zero downtime during peak registration periods for 3 consecutive semesters.
+340%
Load capacity
-67%
Page load time
0
Peak downtime