Developing a production-grade Spring-based microservices ecosystem requires careful consideration of various factors, including coding standards, architectural components, and essential frameworks and libraries.

• Maven
• JDK 17
• Spring boot 3.1.0
• Spring Cloud Gateway Server
• Spring Cloud Config Server
• Spring Cloud Eureka Server
• Spring Data JPA
• QueryDsl
• Specification-Arg-Resolver
• Lombok
• MapStruct
• Spring security will be added soon

• Maven: Uses Maven Wrapper

• Java 17: includes Open JDK 17

• Spring Boot 3: provides an opinionated approach to building microservices. It simplifies the configuration and deployment process, autoconfigures various components, and includes built-in support for creating RESTful APIs. Ensure that you use the latest version of Spring Boot and keep track of any updates or new features introduced.

• Gateway Server: Use a gateway, such as Spring Cloud Gateway or Netflix Zuul, to handle API routing, load balancing, and security.

• Config Server: Employ a centralized configuration server, like Spring Cloud Config, to manage configurations for microservices.

• Eureka Server: Service Registry: Utilize a service registry, such as Netflix Eureka to enable service discovery and registration.

• Spring Data JPA: Spring Data JPA is a part of the Spring Data project, which provides a high-level abstraction for working with databases in Java applications. It simplifies the development of data access layers by reducing boilerplate code and providing convenient APIs.

• QueryDsl: QueryDsl is a Java library that provides a type-safe and fluent API for constructing database queries. It helps avoid writing raw SQL queries and provides compile-time validation of queries. Integrate QueryDsl into project to enhance query construction and reduce potential errors.

• Specification-Arg-Resolver: Specification-Arg-Resolver is a library that simplifies the creation of dynamic queries in Spring Data JPA using Specification objects. It allows constructing complex queries based on provided criteria. By using Specification-Arg-Resolver to build dynamic and flexible queries within microservices ecosystem.

• Lombok: Lombok is a library that eliminates boilerplate code by providing annotations to generate getter/setter methods, constructors, equals/hashCode methods, and more. It helps reduce code verbosity and improves developer productivity. Incorporate Lombok into project to simplify the codebase.

• MapStruct: MapStruct is a code generation library for mapping Java bean properties between different classes. It eliminates the need for writing repetitive mapping code manually. MapStruct generates efficient, type-safe mapping code based on annotations and conventions. Using MapStruct to simplify object mapping in microservices.