ddd4j-cloud Observability

Overview

Covers Nacos, Sentinel, monitor, trace, metrics, logging, health, and readiness uniformly, not split per artifact. Choose the Cloud→Boot→ddd4j primary combination first, then read the current branch.

When to Use

• Configuring Nacos registration/configuration and Sentinel rules with real connectivity in a ddd4j-cloud service.
• Separating liveness from readiness and wiring readiness to aggregate real dependencies.
• Planning and verifying trace propagation across sync, async, Reactor, and Feign paths.
• Reviewing metrics and logging for low-cardinality, redacted labels.
• Reviewing the monitor/nacos/sentinel extensions and their configuration keys.
• Diagnosing probes that stay green while a dependency is down, or rules that never fire.

When NOT to Use

Do not use this skill when: