Towards a Technique for Extracting Microservices from Monolithic Enterprise Systems

TL;DR

This paper presents a technique to extract microservices from monolithic enterprise systems, demonstrated on a large banking system, aiming to facilitate modularization and evolution.

Contribution

It introduces a novel approach for identifying microservice candidates within existing monolithic systems, validated on a substantial banking application.

Findings

Successfully identified microservice candidates in a 750 KLOC banking system

Approach effectively supports modularization of large monolithic applications

Demonstrates potential to reduce complexity and improve system evolution

Abstract

The idea behind microservices architecture is to develop a single large, complex application as a suite of small, cohesive, independent services. On the other way, monolithic systems get larger over the time, deviating from the intended architecture, and becoming risky and expensive to evolve. This paper describes a technique to identify and define microservices on monolithic enterprise systems. As the major contribution, our evaluation shows that our approach was able to identify relevant candidates to become microservices on a 750 KLOC banking system.