Red Hat Certified Enterprise Microservices Developer («EX283»)

If you are a current Red Hat Certified JBoss Developer (RHCJD), you will become a Red Hat Certified Specialist in Enterprise Microservices Development by passing this exam.

You should be able to accomplish the tasks below without assistance. While explicitly addressing Microprofile and microservices, the skills and abilities demonstrated in this exam are also applicable to a wide range of advanced enterprise Java developments:

• Providing and obtaining configuration properties through several environment-aware sources both internal and external to the application and made available through dependency injection or lookup using Configuration for Microprofile
  • Externalizing data into configured values
  • Injecting configured values into beans using the @Inject and the @ConfigProperty qualifier
  • Accessing or creating a certain configuration
  • Understanding default and custom ConfigSource and ConfigSource ordering
  • Understanding and implementing converters
• Separating execution logic from business logic using Microprofile Fault Tolerance
  • Understanding the relationship to MicroProfile Config
  • Understanding async vs. sync execution type and know the default
  • Using @Timeout
  • Understanding retry policies and applying using @Retry
  • Understanding and defining fallback
  • Understanding and applying CircuitBreaker and Bulkhead
  • Understanding and setting up fault tolerance configuration
• Probing the state of a computing node from another machine using MicroProfile Health Check
  • Understanding and implementing the Health Check interface and Health Check Response
  • Constructing human-friendly Health Check Response
  • Understanding protocol and wireformat
• Exporting monitoring data to management agents using Microprofile Metrics
  • Understanding difference with Health Check
  • Understanding and using three sets of sub-resource (scopes): base, vendor, and application
  • Understanding tags (labels), metric registry, and @Metric
  • Understanding metadata and why it is best practice
  • Exposing metrics via REST API
  • Knowing required metrics
  • Understanding application metrics programming model
• MicroProfile Interoperable JWT RBAC: OpenID Connect (OIDC)–based JSON Web Tokens (JWTs) for role-based access control (RBAC) of microservice endpoints
  • Understanding security tokens in RESTful services and token-based authentication
  • Using JWT bearer tokens to protect services
  • Marking a JAX-RS application as requiring MP-JWT access control
  • Mapping MP-JWT tokens to Java EE Container APIs

As with all Red Hat performance-based exams, configurations must persist after reboot without intervention.