This version is still in development and is not considered stable yet. For the latest stable version, please use Micrometer 1.13.3! |
Micrometer KairosDB
KairosDB is a dimensional time-series database built on top of Cassandra. Charting can be accomplished in Grafana by using a Kairos datasource.
1. Installing micrometer-registry-kairos
For Gradle, add the following implementation:
implementation 'io.micrometer:micrometer-registry-kairos:latest.release'
For Maven, add the following dependency:
<dependency>
<groupId>io.micrometer</groupId>
<artifactId>micrometer-registry-kairos</artifactId>
<version>${micrometer.version}</version>
</dependency>
2. Configuring
The following example configures KairosDB:
KairosConfig kairosConfig = new KairosConfig() {
@Override
@Nullable
public String get(String k) {
return null;
}
};
MeterRegistry registry = new KairosMeterRegistry(kairosConfig, Clock.SYSTEM);
KairosConfig
is an interface with a set of default methods. If, in the implementation of get(String k)
, rather than returning null
, you instead bind it to a property source, you can override the default configuration. For example, Micrometer’s Spring Boot support binds properties that are prefixed with management.metrics.export.kairos
directly to the KairosConfig
:
management.metrics.export.kairos:
# You will probably want disable Kairos publishing in a local development profile.
enabled: true
# The interval at which metrics are sent to Kairos. The default is 1 minute.
step: 1m
# Authentication may be required, depending on how you have Kairos configured
user-name: MYUSER
password: MYPASSWORD