Technical optimization

Saptech Solution partnered with a leading FinTech firm to overhaul their legacy trading platform, suffering from:

• 2.8-second API latency causing failed transactions

• $18k/month wasted on underutilized cloud resources

• Mobile app crashes for 12% of users during peak hours

Our mission: Rebuild for speed, stability, and scalability without business disruption.

Our Technical Optimization Process

Phase 1: Forensic Analysis (Week 1-2)

• Conducted Lighthouse + WebPageTest audits (Score: 28/100 → 92/100)

• Profiled slowest API endpoints using New Relic & Datadog

• Mapped infrastructure hot spots with AWS X-Ray

Key Finding:

68% of latency came from unoptimized PostgreSQL queries with N+1 problems.

Phase 2: Surgical Optimization (Week 3-4)

Backend Revolution:

• Replaced REST with GraphQL for efficient data fetching

• Implemented database connection pooling (reduced idle connections by 80%)

• Introduced asynchronous logging to cut I/O wait times

Infrastructure Overhaul:

• Migrated to Kubernetes (EKS) with horizontal pod autoscaling

• Configured Redis Cluster for session caching (hit rate: 99.2%)

Frontend Triage:

• Switched from React Class → Functional Components + React.memo

• Preloaded critical assets using <link rel=preload>

Phase 3: Validation & Rollout (Week 5-6)

• A/B tested new infrastructure with 5% traffic before full cutover

• Implemented Synthetic Monitoring with AWS CloudWatch Synthetics

• Trained client’s team on performance debugging tools