Spring Cloud and Kubernetes both complement each other to build a cloud native platform and run microservices on the Kubernetes containers. Kubernetes provides many features which are similar to Spring Cloud and Spring Config Server features.
Spring framework has been around for many years. Even today, many organizations prefer to go with Spring libraries because it provides many features. It's a great deal when developers have total control over cloud configuration along with business logic source code.
Let’s discuss a couple of challenges of cloud configuration code with Spring Cloud and Spring Config Server for microservices architecture:
Spring doesn’t provide these important features:
Here are few better alternatives of Kubernetes for Spring libraries:
Important Note: Starting from the Spring Cloud Greenwich release Train, Netflix OSS, Hystrix, Ribbon, and Zuul are entering into maintenance mode and now deprecated. This means that there won't be any new features added to these modules, and the Spring Cloud team will only fix bugs and security issues. The maintenance mode does not include the Eureka module. Spring provides regular releases and patches for its libraries; however, Netflix OSS is almost not active and not being used by the organizations.
Spring provides tons of features and has a proven Java based framework for many years! Kubernetes provides complimentary features which are comparable with Spring features and can be replaced to extract configuration code from the business logic. Cloud native microservices' service architecture (MSA) and 12/15 factor principles recommend to keep cross cutting configuration code outside of the business logic code. Configuration should be stored and managed separately. In MSA, the same configuration can be shared across many microservices, that's why configuration should be stored externally and be available for all microservices applications. Also, these configurations should be managed by DevOps teams.
This helps developers to focus only on business logic programming. It will definitely make release faster with lower development cost. Also, building and deployment will be faster for microservices apps. Kubernetes provides better alternatives to replace these legacy Spring libraries features, many of them are deprecated or in maintenance phase. Kubernetes also provides Service Mesh support.
These Kubernetes alternatives are really helpful for microservices application and complimentary to Spring Java framework for microservices development.
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