Where are system or application metrics usually stored?

Metrics of the system or application are usually stored in the following places:

• System metric databases: specialized storage such as Prometheus, InfluxDB, Graphite.
• Cloud monitoring services: such as AWS CloudWatch, Google Cloud Monitoring, Datadog.
• Local files: sometimes metrics are written to log files or separate data files for later collection.
• Log and metric aggregation systems: for example, ELK Stack (Elasticsearch, Logstash, Kibana) or Fluentd.

The choice of storage location depends on requirements for accessibility, processing speed, and data volume.