Nike Application Modernization

Legacy application modernization with security and quality enhancement

Project Overview

Nike legacy application modernization project focused on upgrading critical systems from Spring 4.2 (10+ years old) to Spring Boot 3.5 and Java 8 to Java 21, while implementing comprehensive security and quality improvements including vulnerability scanning, image scanning, code coverage analysis, and automated testing.

Challenge

The main challenge was modernizing decade-old Spring Framework applications while maintaining business continuity, ensuring zero-downtime migration, implementing modern security practices, and establishing quality gates without disrupting ongoing operations.

Solution

Framework & Runtime Modernization

Systematic upgrade of core frameworks and runtime environments with backward compatibility maintained throughout the process.

Spring 4.2 → Spring Boot 3.5: Complete framework migration with auto-configuration

Java 8 → Java 21: JVM upgrade with performance optimization and new language features

Legacy XML configuration → Java-based configuration migration

Dependency management modernization with Spring Boot Starter packages

Security & Quality Enhancement

Implementation of comprehensive security scanning and quality assurance processes integrated into the CI/CD pipeline.

Static Application Security Testing (SAST) integration

Container image vulnerability scanning with automated reporting

Code coverage analysis with minimum 80% threshold enforcement

Automated bug detection and code quality gates with SonarQube

Tech Stack

Spring Boot 3.5

Modern Spring Boot framework upgrade

Java 21

Latest LTS Java version with performance improvements

SonarQube

Code quality analysis and security scanning

JUnit 5

Modern testing framework with advanced features

Container

Container-based deployment

ECS

AWS container service

Jenkins

CI/CD pipeline automation

Terraform

Terraform infrastructure management

Key Results

Successfully migrated 5+ critical applications with zero production downtime

Achieved 60% performance improvement with Java 21 and Spring Boot optimizations

Established 80% code coverage across all modernized applications

Reduced security vulnerabilities by 90% through automated scanning and remediation

Significantly improved maintainability through Spring Boot Auto Configuration and modern architecture

Learnings

Legacy modernization requires careful planning and phased approach to minimize business impact

Automated testing and CI/CD integration are crucial for safe framework migrations

Security-by-design approach significantly reduces post-deployment vulnerabilities

Modern Spring Boot significantly reduces boilerplate code and configuration overhead

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