Seapedia E-Commerce
High-Throughput E-Commerce Core Engine with ACID Transaction Guarantees
Project Overview
Full-fledged e-commerce platform with ACID multi-table checkout guarantees, dynamic SKU cataloging, discount engines, and modular Golang Clean Architecture.
- —Built production-grade e-commerce RESTful endpoints in Golang (Fiber, GORM) adhering to Clean Architecture.
- —ACID database transaction workflows guaranteeing zero stock race conditions during simultaneous checkouts.
- —Tiered promotional discount calculator with dynamic rules, coupon constraints, and expiry validation.
- —Integrated Docker Compose environment with automated schema migrations and unit test suites.
The Challenge
High-concurrency e-commerce order flows are notoriously vulnerable to database race conditions, inventory drift, and discount rule leaks.
- —Simultaneous checkouts competing for final SKU units resulting in overselling without strict locking.
- —Multi-layered discount calculations (percentages, fixed codes, caps) causing accounting rounding errors.
- —Deep category hierarchy queries slowing down relational database indexing under load.
- —Codebase needed clean modularity for friction-free onboarding across the engineering squad.
The Solution
Implemented Go Clean Architecture utilizing multi-table ACID transactions, defensive row locking, and isolated domain services.
- —Automated database rollback triggers preventing orphaned records if any checkout sub-operation fails.
- —Isolated promotional discount calculation service tested thoroughly across edge-case matrix.
- —Optimized MySQL composite indexes for low-latency product filtering and full catalog browsing.
- —Docker Compose configuration ensuring 100% parity between local development and staging.
Key Features
Functional capabilities built to solve core user and operational friction.
ACID Guaranteed Checkout
Order creation, stock deduction, and billing records committed atomically with instant rollback on failures.
Dynamic Discount & Coupon Engine
Supports percentage cuts, fixed-amount discounts, minimum order thresholds, and per-user usage limits.
Multi-Tier Product Catalog
Manages complex SKU variants, gallery assets, inventory counts, and rapid indexed search.
Role-Based Access Control
Strict privilege separation between buyers and store admins backed by verified JWT middleware.
System Architecture
Architectural patterns, backend performance paradigms, and key design decisions.
Engineering Process
Development lifecycle from modeling to production deployment.
Domain Modeling & Schema Design
Modeled normalized relational schemas, checkout states, and transactional boundaries.
- —Third-normal-form relational schema modeling
- —Order state machine and cancellation lifecycle
- —Promotional validation rule specification
REST API Implementation & Clean Architecture
Implemented Go Fiber endpoints, repository abstractions, and ACID transactional scopes.
- —Domain, UseCase, and Delivery layer separation
- —Defensive database locks mitigating concurrency hazards
- —JWT authentication middleware and audit logging
Testing & Performance Validation
Conducted unit test suites, concurrent checkout load simulations, and Docker packaging.
- —Unit testing discount edge-cases
- —Concurrent checkout stress tests
- —Automated versioned schema migrations