leejunkim

Spring Framework + Ecosystem

3 min read

Spring

The Spring Framework is an open-source application framework for the Java platform, often simply called Spring

Spring Data

Spring

A project that provides a consistent programming model and an abstracted approach for various data stores (RDBMS, NoSQL, search engines, etc.)

  • Significantly enhances the productivity and consistency of data access logic by automating complex DAO (Repository) implementations
  • SQL vs NoSQL
  • Collection of sub-projects
    • Spring Data JPA: JPA-based ORM abstraction.
    • Spring Data MongoDB, Redis, Cassandra, etc.: Support for NoSQL databases.
    • Spring Data Elasticsearch: Integration with search engines.
    • Spring Data REST: Automatically exposes Repositories as REST APIs.
  • Key features
    • Automatic CRUD Code Generation: Automatically implements query methods based on method names.
    • Standardization of Common Interfaces: Development based on extending common interfaces like CrudRepository and JpaRepository.
    • Data Store Independence: Allows changing data stores with minimal code modification.
    • Built-in Various Auxiliary Features: Includes pagination, sorting, dynamic queries, and Auditing.

Spring Security

Spring

A security framework responsible for Authentication and Authorization in Spring-based applications

  • Key features
    • Provides a Separate Structure for Authentication/Authorization:
      • Authentication: Handles login, session management, and tokens.
      • Authorization: Manages permission checks and access control.
    • Supports various authentication methods: Includes session-based, token-based (JWT), OAuth2, and more.
    • Filter Chain-based Security Processing: Applies centralized security to all requests via Servlet Filters.
    • Declarative Method Security Features: Utilizes annotations like @Secured, @PreAuthorize, @PostAuthorize.
    • Security Vulnerability Countermeasures: Includes built-in defense features against web vulnerabilities such as CSRF, XSS, Session Fixation, and Clickjacking.

Spring Cloud

Spring

Provides integrated support for infrastructure components specifically designed for cloud-native applications, particularly those built with a Microservices Architecture (MSA).

  • Helps devs easily configure frequently required patterns in complex distributed systems, such as configuration servers, service discovery, load balancing, and API gateways.
  • Key features
    • Config Server: Centralized management of service configuration files from external sources like Git.
    • Service Discovery (Eureka): Enables services to dynamically register, find, and connect with each other.
    • API Gateway (Spring Cloud Gateway): Routes and filters external requests, handling common processes like authentication, logging, and rate limiting.
    • Logging/Monitoring: Supports distributed tracing with Sleuth + Zipkin.
    • Resilience Pattern Support: Provides features like Circuit Breaker (Resilience4j, Hystrix), Retry, and Rate Limiting.
  • Practical Application Points
    • Enables easy configuration of automation, scalability, and fault tolerance in production environments.
    • Standardizes connection, security, and monitoring among Spring Boot-based microservices.
    • Can be flexibly applied across various cloud platforms such as AWS services, GCP, and Azure.

Connecting Projects

Tip

  • Each Spring project can be used independently, yet they are designed to be organically connected, all leveraging the Spring Framework as their common foundation.
  • This allows for flexible system design by combining them freely to meet diverse architectural and requirement needs.

Power synergies

  • Spring Boot + Spring Data: Minimizes configuration + Automates Repository implementation → Rapid development of data-centric APIs.
  • Spring Boot + Spring Security: Quickly configures authentication/authorization logic, and builds OAuth2 or JWT-based authentication systems.
  • Spring Boot + Spring Cloud: Configures infrastructure patterns (Config Server, Gateway, Discovery, etc.) essential for microservices environments.
  • Spring Boot + Spring AOP: Separates common logic (logging, transactions, etc.) from core logic to achieve a clean architecture.
  • Spring MVC + Spring Security + Spring Data JPA: Forms the standard structure for traditional CRUD-based web/REST services.

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