Logging and Observability

Metric Counter

Emit a Count

Scripts can emit small metric lines after work completes. A counter is simple to graph when the metric name and value shape stay fixed.

Program

Play the script to choose the count and see the metric line.

metric_counter_line.sh 
#!/usr/bin/env bash

count=
metric="jobs_processed"
line="$metric=$count"
echo "$line"

#!/usr/bin/env bash

count=
metric="jobs_processed"
line="$metric=$count"
echo "$line"
metric A metric is a named measurement emitted by a script.
counter A counter records how many things were processed.
fixed name Keeping the metric name stable lets later tools compare values over time.