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If a RedisConnectionFactory is detected the system will now export metrics to redis every 5s (initializr.metrics.rateMillis). Metric names are prefixed with <id>.<hex>. where <id> defaults to the application name (initializr.metrics.id) and <hex> is unique. An aggregator app can then pick up the values and (for instance) continue counters across restarts. The code is meant to be easier to upgrade Spring Boot 1.3 There are 2 beans that we can simply remove when we upgrade to 1.3. Meanwhile, the app will run with 1.3 (or 1.2) for testing if you uncomment the @ExportMetricWriter.