| Name | Type | Package | Detail |
| Metric | Interface | samza.metrics | Detail |
| MetricsRegistry | Interface | samza.metrics | Detail |
| MetricsReporter | Interface | samza.metrics | Detail |
| MetricsReporterFactory | Interface | samza.metrics | Detail |
| MetricsVisitor | Class | samza.metrics | Detail |
| NoOpMetricsRegistry | Class | samza.util | Detail |
| ReadableMetricsRegistry | Interface | samza.metrics | Detail |
| ReadableMetricsRegistryListener | Interface | samza.metrics | Detail |
