Drop-in enhancement for Dropwizard Metrics which provide metric persistence using Redis DB via Redisson library.

Uses XStream library for serialization.

Limitations

ALPHA QUALITY Use only if you intend to help improve it.

1. Gauge implemented as passthrough metric. Only saved if you call Gauge.getValue() method, either by yourself or by reporter.
2. Obvious latency issues. Use only for important selected metrics.
3. Values use custom serialization

Usage

Replace your usual

new MetricRegistry();

with improved

new PersistentMetricRegistry();

Maven repository

Maven repository is created using jitpack.io . Configure maven using following steps.

Step 1. Add repository

<repositories>
	<repository>
		<id>jitpack.io</id>
		<url>https://jitpack.io</url>
	</repository>
</repositories>

Step 2. Add the dependency

<dependency>
	<groupId>com.wizecore</groupId>
	<artifactId>persistent-metrics</artifactId>
	<version>0.8</version>
</dependency>

Configuring

By default it uses locally installed Redis (default port, i.e. 6379) To configure use following environment variables:

• REDIS_CONF - Redisson JSON config file. Takes precedence.
• REDIS_ADDR - host:port for single server. Have no effect if REDIS_CONF is defined.
• METRIC_PREFIX - Prefix for all values stored. Default is "metrics.". Dot at the end is added automatically.
• REDIS_PASSWORD - Password for single server. Have no effect if REDIS_CONF is defined.

License

Copyright (c) 2010-2017 Coda Hale, Yammer.com, Wizecore

Published under Apache Software License 2.0, see LICENSE