Enhancing performance, reliability, and scalability of a legacy message routing system
A high-load enterprise application responsible for routing MMS messages between global telecom providers. The system plays a critical role in international communication by ensuring reliable and efficient message exchange across multiple networks
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Quick Facts:
  • Java version upgraded from 8 → 17
  • Containerized deployment with Docker
  • Automated SOAP and LMTP testing framework
  • New features: antispam, rate limiting, performance optimization
  • 2-year project with a 3-engineer team
Client Info:

 An international telecom company facilitating large-scale messaging exchange between operators worldwide. The organization provides critical connectivity infrastructure for messaging interoperability and carrier-grade reliability

Challenge:
  • The existing application faced performance and maintenance issues due to its outdated Java version, legacy libraries, and lack of automated testing. Manual regression testing slowed release cycles, and limited scalability hindered the platform’s ability to support increasing traffic from global telecom partners
Solution:
  • Upgraded Java from version 8 to 17, ensuring long-term support and improved performance
  • Refactored codebase and updated dependencies for compatibility and security
  • Introduced containerization with Docker for easier deployment and scalability
  • Designed and implemented an automated test framework using JUnit for SOAP and LMTP interfaces
  • Added new features including antispam processing and message rate limiting
  • Optimized routing algorithms and database interactions for higher throughput and reduced latency
Business impact:

The modernization resulted in a robust, scalable, and maintainable platform capable of handling global traffic loads with improved efficiency. Automated testing reduced regression testing time significantly, while new processing features enhanced message reliability and security

Team:
  • 3 Engineers
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