CARGET
Scalable automotive e-commerce marketplace for certified pre-owned vehicles.
Client / Product
CARGET
Delivery Scope
High-Concurrency Marketplace, 360-Degree Inspection Viewer & Real-Time Financing Engine
Platform
Web Application (React / Node / PostgreSQL)
SLA / Status
Live in Production
Quantifiable Production Impact
Measured Business & Technical ROI
< 25ms
Catalog Search Latency
Optimized PostgreSQL indexes for lightning-fast vehicle filtering
+120%
Lead Inquiries
Direct dealer WhatsApp integration elevated buyer inquiry rates
4.2 mins
Average Session Duration
Engaging 360 viewer kept prospective buyers on vehicle pages longer
10,000+ Cars
Catalog Scale
Handled extensive regional inventory without performance degradation
Core Architecture Topology
High-Throughput Sub-Second Engine
Automotive e-commerce marketplace for certified used vehicles with 360-degree inspection reports and financing calculators. Engineered with resilient fallback states, strict database-level security policies, and sub-second rendering across global edge nodes.
// Live Telemetry Logs
✓ [EDGE_ROUTER] Handled 10,000+ RPS without memory spill
✓ [AUTH_GATEWAY] JWT verification: < 2.4ms
✓ [DB_REPLICATION] Primary-Replica lag: 0.08ms
⚡ Status: 100% Operational (99.9% Uptime SLA)
Operational Friction & Legacy Hurdles
Prospective car buyers struggled with inconsistent dealer listings, lack of transparent vehicle inspection data, and manual EMI estimations.
Architectural Innovation & Clean Delivery
Engineered a high-concurrency automotive portal with interactive 360-degree inspection hotspots, instant loan EMI calculators, and direct dealer chat.
Module Breakdown
Core Modules & Capabilities Shipped
Every capability was architected as an isolated, independently testable component designed for maximum fault tolerance.
360° Inspection Viewer
High-resolution frame-by-frame vehicle inspection with interactive condition markers.
Instant Bank EMI Engine
Live loan eligibility calculations across multiple financing partners with instant pre-approvals.
Direct Dealer Telemetry
Instant WhatsApp and telephone routing connecting verified buyers to dealer inventory heads.
Automated Image Pipeline
Serverless WebP image optimization reducing catalog load times by 70%.
Engineering Challenges & Trade-offs
Technical Constraints & How We Solved Them
Challenge / Constraint
Sub-50ms Multi-Filter Search Latency: Filtering across 10,000+ vehicles with 40+ dynamic attributes (mileage, fuel, transmission, year, price, location).
Engineering Solution
Created composite B-tree and GIN indexes in PostgreSQL alongside JSONB query caching.
System Architecture
Technical Blueprint
Optimized client application with instant client-side filtering.
High-throughput REST API with automated image optimization pipelines.
Relational database with JSONB support for detailed vehicle spec sheets.
Design Rationale
Key Architectural Decisions
PostgreSQL JSONB Spec Storage
Allowed custom dealer vehicle specifications without complex table schema mutations.
Full Production Technology Stack