<ul data-eligibleForWebStory="false"><li>The article discusses the process of building a real-time log monitoring system in Java without relying on paid services like Datadog or New Relic.</li><li>The system involves microservices emitting structured logs via HTTP, a central LogAggregator service receiving and storing logs in Elasticsearch, and web clients connecting via WebSocket for live logs.</li><li>The system components are modular and replaceable, designed to be lightweight for local clustering and scalable to Kubernetes if needed.</li><li>Key components include configuring structured JSON logging in services using Logback, creating a LogForwardingAppender to send logs to a central server, and implementing real-time log display using Spring's WebSocket support.</li></ul>

How I Built a Real-Time Log Monitoring System in Java Without Paying for Datadog

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