Add HistogramBucketBoundaries

Author: julianocosta89

src/cartservice/src/Program.cs

@@ -70,12 +70,6 @@
         .AddOtlpExporter())
     .WithMetrics(meterBuilder => meterBuilder
         .AddMeter("OpenTelemetry.Demo.Cart.Meter")
-        .AddView(
-            instrumentName: "CartLatency",
-            new ExplicitBucketHistogramConfiguration {
-                Boundaries = new double[] {300000, 400000, 500000, 600000, 700000, 800000, 900000}
-            }
-        )
         .AddProcessInstrumentation()
         .AddRuntimeInstrumentation()
         .AddAspNetCoreInstrumentation()

src/cartservice/src/cartstore/ValkeyCartStore.cs

@@ -27,8 +27,24 @@ public class ValkeyCartStore : ICartStore
 
     private static readonly ActivitySource CartActivitySource = new("OpenTelemetry.Demo.Cart.Source");
     private static readonly Meter CartMeter = new Meter("OpenTelemetry.Demo.Cart.Meter");
-    private static readonly Histogram<long> addItemHistogram = CartMeter.CreateHistogram<long>("app.cart.add_item.latency");
-    private static readonly Histogram<long> getCartHistogram = CartMeter.CreateHistogram<long>("app.cart.get_cart.latency");
+    private static readonly Histogram<long> addItemHistogram =
+        CartMeter.CreateHistogram<long>
+        (
+            "app.cart.add_item.latency",
+            advice: new InstrumentAdvice<long>
+            { 
+                HistogramBucketBoundaries = [ 500000, 600000, 700000, 800000, 900000, 1000000, 1100000 ] 
+            }
+        );
+    private static readonly Histogram<long> getCartHistogram =
+        CartMeter.CreateHistogram<long>
+        (
+            "app.cart.get_cart.latency",
+            advice: new InstrumentAdvice<long>
+            { 
+                HistogramBucketBoundaries = [ 300000, 400000, 500000, 600000, 700000, 800000, 900000 ] 
+            }
+        );
 
     private readonly ConfigurationOptions _redisConnectionOptions;