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Loggen

Loggen is a real-time testing component that repeatedly generates numbers from 0 to 9 and queries Lobster to verify them. This checks the following and provides the results as metrics.

  • Real-time logs: Check if the difference between the query result and the current time is less than 1 second
  • Time order of the logs: Check if there are any timestamps that are out of order
  • Logs consistency: Check if there are any logs missing from the repetition of 0 ~ 9

lobster_web

Usage example(grafana dashboard)

Log system operators can use the metrics generated by Loggen to determine the status of the log system and whether there are any issues.
Below is an example of metrics in Grafana.

Normal

loggen_grafana_panels

When there is a problem

loggen_grafana_panels_problem