Multi-Database Architecture
Multi-database architecture is a software design pattern where an application uses multiple databases, each optimized for specific data types or workloads, rather than relying on a single database. This approach allows developers to leverage the strengths of different database technologies (e.g., relational, NoSQL, in-memory) within a single system. It often involves strategies like polyglot persistence, data synchronization, and distributed transactions to manage data across these heterogeneous databases.
Developers should learn and use multi-database architecture when building complex applications that require handling diverse data types, such as transactional data, real-time analytics, or unstructured content, where no single database can efficiently meet all needs. It is particularly useful in microservices environments, high-performance systems, or scenarios demanding scalability and flexibility, like e-commerce platforms using PostgreSQL for orders and Redis for caching.