JakartaOne Livestream CN4J: Eclipse MicroProfile - Your Cloud-Native Companion

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This document discusses Eclipse MicroProfile, a specification that optimizes Enterprise Java for microservices architectures. It introduces key MicroProfile specifications including Config, OpenTracing, and Metrics. Config allows configuration from sources like etcd. OpenTracing provides distributed tracing across services using tools like Jaeger. Metrics monitors system parameters and exposes them in formats like Prometheus. The document demonstrates these features and concludes that MicroProfile provides an easy way to integrate common CNCF projects into Java applications.

Eclipse MicroProfile
Your Cloud-Native Companion
Rudy De Busscher

Microservices Architecture
• Focused on a business domain
• Loosely couples services
• Maintenance
• Configuration
• Routing
• Observability
• Where is that request stuck?
• What service is overloaded?

Rudy De Busscher
• Payara
• Service team
• Developer Advocate
• Involved in
• Committer of MicroProfile
• Committer of Jakarta EE
• Java EE Security API Expert group member
@rdebusscher
https://blog.payara.fish/
https://www.atbash.be

Topics
•Config
• Uniform values across all services!
• Interfacing etcd
•Tracing
• What is wrong with my request?
• Interfacing Jaeger
•Metrics
• What is my system doing?
• Interfacing Prometheus

Eclipse MicroProfile
• Optimizing Enterprise Java for a Microservices Architecture
• Innovating, Breaking backwards compatibility
• Based on Jakarta REST (JAX-RS), CDI and JSON-P/B
• Goodies for your microservice - distributed environment
• Metrics, Fault Tolerance, OpenTracing, Health, OpenApi, JWT token
support, Reactive messaging, ….
• Multiple implementations

MicroProfile Config
• Configuration outside application
• 12-factor application item
• Different sources and/or formats
• system properties, system environment variables, .properties,
.xml, datasource, …

MicroProfile Config
• ConfigSource
• Possible source of configuration data
• Ordered
• Dynamic
• New values picked up

Etcd
• Distributed key value store
• Safe storage for configuration
• gRPC interface
• MicroProfile config extension

MicroProfile OpenTracing
• Distributed tracing
• Trace the flow of a request across service boundaries
• Scenarios
• Performance (bottleneck detection)
• Debugging

MicroProfile OpenTracing
• Span
• Info about the request
• Correlation id
• Flow history
• Custom data (baggage items)
• Integration
• Collector independent

Jaeger
• Based upon Dapper and OpenZipkin
• Based on OpenTracing API specification.
• Multiple backends
• GUI

MicroProfile Metrics
• Monitor essential system parameters
• Observability
• System ‘Health’
• Specific MicroProfile Health specification
• values, not just Yes/No

MicroProfile Metrics
• Required basic set of values
• Vendor specific additions
• Data exposed by endpoint
• Also in Prometheus format
• Examples
• CPU
• Memory
• Request Load

Prometheus - Grafana
• Prometheus
• Database for Time series.
• Collect from ‘endpoints’
• Limited graphical capabilities
• Grafana
• Open-Source tool for visualisation of Time Series data

Conclusion
• Eclipse MicroProfile, specific Java Enterprise toolbox for
distributed environments
• Many CNCF projects can be used with it
• Easy, out-of-the-box integration

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