micrometer-metrics/micrometer

Features

• Observability - Decouples application instrumentation from vendor-specific monitoring libraries through a standardized set of metric interfaces.
• Dimensional Application Instrumentation - Collects dimensional measurements using counters, gauges, and timers to track system behavior across backends.
• Dimensional Data Slicing - Assigns tags to measurements to enable drilling down and filtering data across different categories.
• Metric Rate Tracking - Converts discrete data samples into rates or cumulative values as required by the monitoring backend.
• Metrics Facades - Provides a vendor-neutral interface for recording dimensional metrics that decouples application code from specific observability backends.
• Application Performance Monitoring - Records counters, gauges, and timers to track system behavior and performance across different monitoring backends.
• Observability Backend Adapters - Transforms and routes instrumented data to various external monitoring tools using a consistent abstraction layer.
• Observability Backend Routing - Routes instrumented application data to external monitoring systems through a vendor-neutral interface.
• Dimensional Meter Management - Tracks and stores dimensional meters using a registry that maps them to specific monitoring implementations.
• Dimensional Metrics Libraries - Provides a library for tracking application performance using counters, gauges, and timers with key-value tags.
• Global Metric Registries - Provides a shared entry point to create and look up meters without passing registry instances throughout the application.
• Meter Registries - Centralizes the creation and storage of meters to ensure consistent lifecycle management and global accessibility.
• Metric Dimensional Attributes - Associates metrics with key-value tags to enable granular filtering and aggregation across different backends.
• Event Frequency Monitoring - Increments monotonically increasing values to measure the rate at which specific events occur.
• Observation Entry Tagging - Attaches common tags to every reported metric to enable environment-wide analysis by host, region, or instance.
• Telemetry Collectors - Integrates with external telemetry collectors to gather and report usage metrics from software environments.
• Time Duration Monitoring - Tracks time-based values and scales them to the base unit required by the monitoring backend.
• Vendor-Neutral Observability Interfaces - Provides a vendor-neutral interface for recording metrics to decouple application code from specific observability backends.
• Cardinality Limiters - Protects application memory by limiting the number of unique tag combinations registered for any single metric.
• Cardinality Detection - Identifies metrics that produce an excessive number of unique time series to prevent resource exhaustion.
• Cardinality Metadata Filtering - Allows marking specific metadata as high cardinality to exclude it from metrics while keeping it for tracing.
• Local Distribution Sampling - Computes histograms and percentiles locally before shipping aggregated data to a monitoring backend.
• Metric Delta Tracking - Tracks functions that only increase over time to report either the cumulative value or the rate of change.
• Metric Push Clients - Supports pushing summarized telemetry data to remote monitoring services on a fixed schedule.
• Metric Name Normalizations - Transforms dot-notation names into the specific format required by a monitoring backend to ensure portability.
• Backend Name Normalizations - Transforms generic metric names and tags into the specific formatting and naming conventions required by different monitoring systems.
• Event Distribution Histograms - Records non-temporal values to analyze the distribution and spread of events, such as payload sizes.
• Execution Duration Tracking - Measures the execution time of ongoing processes in real-time before the tasks complete.
• Instantaneous State Sampling - Samples the current state of a numeric value or object property at the moment of reporting.
• JVM Metrics Collectors - Provides pre-configured bindings for gathering telemetry from JVM garbage collection, processor utilization, and thread pools.
• Metric Name Normalization - Provides name normalization to ensure metrics are portable across different monitoring systems with varying naming requirements.
• Internal Telemetry Monitors - Gathers pre-configured instrumentation data for system internals such as garbage collection and processor utilization.
• Percentile Distribution Computation - Computes value distributions via server-side histogram buckets or client-side approximations for performance analysis.
• Pre-configured System Instrumentation - Instruments standard components like caches, garbage collection, and thread pools for immediate operational insight.
• Registration Filtering - Controls which meters are allowed to be registered in the registry based on specific criteria.
• System Resource Monitors - Collects pre-configured telemetry from internal components like garbage collection, processor utilization, and thread pools.
• Runtime Component Bindings - Binds pre-configured collectors to internal runtime components like garbage collection and thread pools for immediate telemetry.
• Statistical Distribution Analysis - Sets distribution parameters for timers and summaries, including pre-computed percentiles and histograms.
• Monitoring - Vendor-neutral metrics facade for Java.
• JVM Profiling Tools - Application metrics facade for monitoring tools.

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