Polyglot Persistence in Microservices: Choosing the Right Database for Each Service (opens in new tab)

Introduction One of the most consequential decisions in microservices architecture is data storage. Monolithic systems traditionally rely on a single relational database to service all needs — a model that worked well for decades but creates tight coupling, limits scalability, and forces every domain to conform to the same persistence paradigm regardless of whether it is the right fit. Modern distributed systems have embraced a concept known as polyglot persistence — the practice of using dif...