I want to meter an external system counter in Micrometer.
For the context: I want to provide Redis Streams specific metrics like https://redis.io/docs/latest/commands/xinfo-groups/
There is a field called entries-read
, and the docs says:
entries-read: the logical "read counter" of the last entry delivered to the group's consumers
I noticed I cannot use Micrometer Counter
because it only increases the value.
Should I use Gauge
for this type of external counter or there is another way?
If it is truly a counter (monotonic), you can use FunctionCounter
, you can find many use-cases in Micrometer's codebase.
If it is not (non-monotonic), you can use a Gauge
.