RockteMQ-AI commented on issue #4337: URL: https://github.com/apache/rocketmq-dashboard/issues/4337#issuecomment-5680647438
**Issue Evaluation** Category: `enhancement` | Status: **Evaluated** **Feasibility:** Feasible with caveats **Scope:** Dashboard backend (new service + controller) + frontend (new modal) **Compatibility:** No breaking changes — additive feature This is a valuable operational insight feature. Page cache hit rate monitoring directly helps operators identify cold read pressure that causes broker write stalls. **Assessment:** - The problem statement is accurate — cold reads from CommitLog are a major source of broker performance degradation - The proposed `BrokerColdReadReport` model captures the right metrics (hit percentage, cold read TPS, memory pressure index) - **Implementation caveat:** Accurate cold read ratio calculation requires OS-level metrics (`/proc/PID/io` or perf counters). The dashboard agent would need to collect these from the broker JVM, which may require additional broker-side instrumentation or JMX access - The top cold-reading consumer group identification is particularly useful for operational troubleshooting - Consider: should this be a real-time inspector or a periodic sampling dashboard? Real-time would add load to brokers This feature aligns well with RocketMQ's operational maturity goals. --- *Automated evaluation by github-manager-bot* -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
