CYBER SECURITY • AUGUST 2026
The Monitoring Report
Devops• Linux • Observability
Metric cardinality limits in OpenTelemetry: a practical guide
OpenTelemetry metrics are designed to be safe to use in production. One part of that safety is the cardinality limit in the metrics SDK. The limit protects your process from unbounded memory growth when a metric receives too many unique attribute combinations. That protection is useful, but it has a consequence many users do not expect: when a metric stream overflows, the total value remains correct, while queries that filter or group by attributes can undercount. This can affect dashboards, service-level objectives (SLOs), and alerts that looked correct before overflow started.
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22 July , 2026CORE INFRASTRUCTURE
Linux Kernel
The core open source operating system kernel powering servers, cloud infrastructure, embedded systems, and billions of devices worldwide.
Kubernetes
Production-grade container orchestration platform for automating deployment, scaling, and management of distributed applications.
PostgreSQL
Advanced open source relational database system known for reliability, extensibility, SQL compliance, and enterprise usage.
Redis
High performance in-memory data structure store used for caching, messaging, databases, and real-time applications.
Nginx
High performance web server, reverse proxy, load balancer, and HTTP infrastructure component powering many internet services.
Docker
Container platform that changed modern software delivery by enabling portable application packaging and deployment.
Git
Distributed version control system designed for speed, reliability, and efficient management of software source code.
OpenSSL
Cryptographic library implementing TLS, encryption algorithms, certificates, and secure communication protocols.
OpenTelemetry
Open source observability framework for collecting and exporting telemetry data including traces, metrics, and logs.
TensorFlow
Open source machine learning framework used for building and deploying artificial intelligence models.
PyTorch
Open source machine learning framework widely used for research, deep learning, and artificial intelligence applications.
VS Code
Open source code editor platform providing extensibility, debugging tools, and development workflows across many languages.
Prometheus
Open source monitoring and alerting system designed for collecting metrics and operating reliable infrastructure.
Grafana
Open source visualization and analytics platform for metrics, logs, traces, and operational monitoring data.
Ansible
Automation platform for configuration management, application deployment, and infrastructure orchestration.