fix(tracemetrics): Bump metrics buffer to 1k (#18039)

Author: k-fish

packages/core/src/metrics/internal.ts

@@ -12,7 +12,7 @@ import { timestampInSeconds } from '../utils/time';
 import { _getTraceInfoFromScope } from '../utils/trace-info';
 import { createMetricEnvelope } from './envelope';
 
-const MAX_METRIC_BUFFER_SIZE = 100;
+const MAX_METRIC_BUFFER_SIZE = 1000;
 
 /**
  * Converts a metric attribute to a serialized metric attribute.

packages/core/test/lib/metrics/internal.test.ts

@@ -249,12 +249,12 @@ describe('_INTERNAL_captureMetric', () => {
     const scope = new Scope();
     scope.setClient(client);
 
-    // Fill the buffer to max size (100 is the MAX_METRIC_BUFFER_SIZE constant)
-    for (let i = 0; i < 100; i++) {
+    // Fill the buffer to max size (1000 is the MAX_METRIC_BUFFER_SIZE constant)
+    for (let i = 0; i < 1000; i++) {
       _INTERNAL_captureMetric({ type: 'counter', name: `metric.${i}`, value: i }, { scope });
     }
 
-    expect(_INTERNAL_getMetricBuffer(client)).toHaveLength(100);
+    expect(_INTERNAL_getMetricBuffer(client)).toHaveLength(1000);
 
     // Add one more to trigger flush
     _INTERNAL_captureMetric({ type: 'counter', name: 'trigger.flush', value: 999 }, { scope });