Set back backoff idle strategies

Author: artem-v

metrics-mimir/src/main/java/io/scalecube/metrics/mimir/MimirPublisher.java

@@ -11,10 +11,10 @@
 import org.agrona.ErrorHandler;
 import org.agrona.concurrent.AgentInvoker;
 import org.agrona.concurrent.AgentRunner;
+import org.agrona.concurrent.BackoffIdleStrategy;
 import org.agrona.concurrent.EpochClock;
 import org.agrona.concurrent.IdleStrategy;
 import org.agrona.concurrent.ManyToOneConcurrentArrayQueue;
-import org.agrona.concurrent.SleepingMillisIdleStrategy;
 import org.agrona.concurrent.SystemEpochClock;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -154,7 +154,7 @@ private void conclude() {
       }
 
       if (idleStrategy == null) {
-        idleStrategy = new SleepingMillisIdleStrategy(100);
+        idleStrategy = new BackoffIdleStrategy();
       }
 
       Objects.requireNonNull(url, "url");

metrics/src/main/java/io/scalecube/metrics/MetricsRecorder.java

@@ -30,10 +30,10 @@
 import org.agrona.SystemUtil;
 import org.agrona.concurrent.AgentInvoker;
 import org.agrona.concurrent.AgentRunner;
+import org.agrona.concurrent.BackoffIdleStrategy;
 import org.agrona.concurrent.CachedEpochClock;
 import org.agrona.concurrent.EpochClock;
 import org.agrona.concurrent.IdleStrategy;
-import org.agrona.concurrent.SleepingMillisIdleStrategy;
 import org.agrona.concurrent.SystemEpochClock;
 import org.agrona.concurrent.UnsafeBuffer;
 import org.agrona.concurrent.broadcast.BroadcastTransmitter;
@@ -252,7 +252,7 @@ private void conclude() {
       }
 
       if (idleStrategy == null) {
-        idleStrategy = new SleepingMillisIdleStrategy(100);
+        idleStrategy = new BackoffIdleStrategy();
       }
     }
 
@@ -417,7 +417,7 @@ public IdleStrategy idleStrategy() {
       return idleStrategy;
     }
 
-    BroadcastTransmitter metricsTransmitter() {
+    private BroadcastTransmitter metricsTransmitter() {
       return metricsTransmitter;
     }