Logging

Metrics tell you something is wrong. Logs tell you what is wrong. A practical guide on when to use each for effective observability.

Reduce log costs by cutting repetitive, low-value logs early and keeping only the signals that help you debug issues with full clarity.

Understand how APM logs connect metrics, traces, and events to speed up debugging and uncover root causes faster.

A practical look at common log format standards, how JSON, XML, and key-value logs work, and when to use each in production systems.

Diagnose missing Loki metrics by fixing recording rule gaps, remote write failures, and high-cardinality issues in production setups.

Visually build, parse, and analyze logs across services, no LogQL required. Get structured insights faster with Query Builder.

Here's how you can build automated log analysis workflows with Last9's Query Logs API

A practical guide to querying, filtering, and visualizing logs in Kibana, built for speed, scale, and real-world debugging workflows.

Log loss and cross-entropy are core loss functions for classification tasks, measuring how well predicted probabilities match actual labels.

Centralized logging helps you debug faster, scale smarter, and cut through noise. Here's how to get it right from the start.

Understand how to write logs to a file in Go, avoid common pitfalls, and build a production-ready logging setup with performance and safety in mind.

Understand how to manage, search, and optimize logs in Kibana using structured data, efficient queries, and performance-aware setup techniques.

Learn how access logs work, what they capture, and how to use them to debug issues, monitor performance, and spot security red flags.

A practical guide to event logs—what to capture, how to structure them, and why they matter for debugging, monitoring, and visibility.

Learn where Linux stores logs, what each file does, and how to use them for debugging, monitoring, and keeping your systems in check.

Understand how to quickly log into a Docker container using simple commands to troubleshoot and manage your apps effectively.

Graylog or ELK? Discover which log management tool fits your team’s needs, from quick setup to deep customization.

Understand auditd logs as a way to track important actions on your Linux system, helping you spot security issues and keep things running smoothly.

Understand how to collect, manage, and troubleshoot Kubernetes logs to keep your applications running smoothly and issues easy to debug.

Graylog and Loki offer different logging approaches—full-text search vs. label-based indexing—for varied needs and scale. Know more here!

A practical guide to setting up Loki for logs—how it works, how to query, and what to watch out for in real-world environments.

Explore the top 11 logging tools of 2025—compare features, use cases, and pricing to find the perfect fit for your DevOps observability stack.

Learn how to manage logging in microservices—from common challenges to tools and practices that actually help in real-world systems.

Discover the most effective Node.js logging libraries, their implementation patterns, and how to choose the right one for your specific project needs.

Learn how to set up logging in React the right way—avoid noisy logs, catch bugs early, and make debugging less of a headache.

Learn how to read and analyze Apache logs to troubleshoot issues effectively and keep your web server running smoothly.

Learn how to set up centralized logging in AWS, from basic setup to advanced implementations, with troubleshooting tips for smooth operations.

Discover everything DevOps engineers need to know about GCP logs, from collection to analysis, to optimize performance and troubleshooting.

Learn what a logging formatter is, why it’s important, and how it helps make your logs easier to read and more useful for troubleshooting.

Learn how to manage logs under GDPR—handle personal data, set retention rules, and stay compliant without losing observability.

Learn what /var/log is, why it matters, and how understanding Linux system logs can help you troubleshoot and maintain systems more effectively.

Log consolidation simplifies managing and analyzing data for DevOps teams, improving efficiency and streamlining operations across systems.

Logging and monitoring work together, but they’re not the same. Here’s how they help you understand, fix, and improve your systems.

A clear guide to debug logging—what it is, how to use it well, and why it matters when you're trying to understand what your code is doing.

A hands-on guide to setting up and managing Java Util Logging—built for DevOps and SREs who need clarity, not more config headaches.

When Java apps slow down, GC logs often hold the clues. This guide helps you read and debug them fast—no jargon, just what you need.

Log shippers quietly move logs to where they’re needed—making debugging, monitoring, and observability possible without the chaos.

Choosing between Log4j and Log4j2? Log4j2 offers better performance, security, and flexibility. Here's why it might be the right choice for you.

Enable trace-level logging when diagnosing complex issues, tracking request flow, or debugging performance without drowning in data.

Struggling with slow queries? MySQL logs hold the answers! Learn how to read them, fix issues, and boost your database performance.

Learn how to set up e-commerce audit logs to track changes, ensure security, and maintain compliance—without adding unnecessary complexity.

Lost in Linux event logs? This guide helps you decode, filter, and troubleshoot issues like a pro—no more staring at endless logs in despair!

Learn how to find and use Ubuntu crash logs to troubleshoot issues, prevent future failures, and keep your system running smoothly.

If RabbitMQ queues are backing up or messages aren’t being consumed, logs can help you figure out what’s wrong. Here’s how to monitor and fix issues.

Learn what website logging is, why it matters, and which tools can help you track issues, improve performance, and keep your site running smoothly.

Learn how to analyze log files effectively, troubleshoot issues faster, and improve system reliability with this practical guide for DevOps engineers.

A syslog server collects and centralizes logs, making troubleshooting faster and easier. Learn how it works and why it’s useful.

Set up logging in Node.js without the headache—learn the essentials, pick the right tools, and keep it simple yet effective.

Learn how log data helps SREs debug issues, monitor performance, and understand system behavior effectively.

Master syslog monitoring to track system events, troubleshoot issues faster, and keep your infrastructure running smoothly.

Learn how to use PHP error logs to quickly identify and fix issues in your application, turning troubleshooting into a structured process.

Too many logs, not enough clarity? Follow these logging best practices to cut through the noise and get the insights that actually matter.

Learn how to set up, manage, and optimize Nginx logging for better debugging, monitoring, and performance insights in your applications.

System logs hold the clues to system issues—but they can be overwhelming. Learn how to read, filter, and analyze logs without the hassle.

Learn how to monitor Windows Event Logs, set up alerts, and ensure compliance with proper log retention and archiving strategies.

SIEM logs help detect threats and improve security. Learn how they work, why they matter, and how to use them effectively.

Learn how to analyze Nginx error logs to troubleshoot issues, detect security threats, and improve performance with practical strategies.

Configuring Logback in Java involves setting up loggers, appenders, and layouts in the logback.xml file to control logging behavior.

Speed up your Node.js application with Pino, the fastest JSON logger available. Our guide covers setup, best practices, and advanced usage to optimize your logging performance

Learn about Tomcat logs: their locations, types, configuration, and best practices to optimize performance and troubleshoot efficiently.

Learn how to read, customize, and optimize HAProxy logs to gain valuable insights and improve performance with our ultimate guide.

Learn the basics of syslog formats, from BSD to RFC 5424 and JSON, and how they impact log management and troubleshooting.

Learn key log retention best practices, tackle challenges, and adopt effective strategies to optimize storage, compliance, and performance.

Learn how to find, analyze, and manage Ubuntu system logs to troubleshoot issues, monitor performance, and enhance system security.

Get clear answers to common log-level questions, from choosing the right level to mapping logs to Syslog.

Learn the essentials of PostgreSQL logs, including types, configuration tips, and troubleshooting strategies to optimize your database performance.

Learn what NGINX log monitoring is, how to set it up, and how to troubleshoot issues to keep your server running smoothly and efficiently.

Learn how to monitor error logs in real-time using various tools and techniques to enhance system stability and troubleshoot issues effectively.

Learn how to use Zap Logger effectively for clean, fast logs in your applications with this simple, comprehensive guide.

Learn how to simplify logging in Go with Slog. This guide covers customization, handlers, log levels, and more for effective logging.

Learn the basics of log parsing, from understanding logs to using the right tools, without all the technical jargon.

Learn how to customize, configure, and optimize Rails Logger to improve logging and debugging in your application.

Syslog levels help categorize log messages by severity, making it easier to monitor, troubleshoot, and prioritize system events.

Learn how to configure Serilog, handle errors, and explore best practices for effective logging in your .NET applications.

SLF4J offers flexibility with multiple logging frameworks, while Log4j provides rich features for detailed, high-performance logging.

Learn about log levels, their types, and how to use them effectively for troubleshooting, performance, and system monitoring.

Learn how to optimize Grafana Loki with S3 storage for scalable, cost-effective log management and improved performance.

Learn about pino-pretty and how it can transform raw JSON logs into a readable, human-friendly format for easier debugging.

Learn how to set up and manage cron jobs in Node.js with this step-by-step guide to automate tasks efficiently in your applications.

Everything you need to know about using Heroku logs for monitoring, troubleshooting, and improving app performance.

Learn how to harness the power of Windows Event Logs for better troubleshooting, system monitoring, and security with this easy-to-follow guide.

Log tracing tracks requests across systems while logging captures events within a system. Both are essential for effective observability.

Learn how to configure log rotation in Linux to keep your system stable, manage log files, and prevent disk space issues effectively.

Master Spring Boot logging with Logback, async appenders, MDC context, and OpenTelemetry integration. Debug issues 10x faster with structured logs and proper log levels.

Learn how to use MongoDB logs for better performance, troubleshooting, and optimization with this simple, step-by-step guide.

Learn how to set up and manage cron jobs in Windows using Task Scheduler, PowerShell, and Command Prompt to automate tasks like backups and system maintenance.

Explore the essential components, types, and best practices for managing application logs to optimize troubleshooting, performance, and security.

Logrus is a powerful, flexible Go logger that simplifies logging, offering various log levels, thread safety, and easy integration with external systems.

Learn how to integrate Winston for efficient logging in Node.js. Explore features, configurations, and best practices to optimize your app's performance.

Learn how to configure and manage Linux Syslog for better system monitoring, troubleshooting, and log management with these helpful tips.

Learn how to instrument AWS Lambda functions with OpenTelemetry to gain valuable insights and improve the performance of your serverless apps.

Master Python logging with structlog! Learn how structured logs improve debugging, observability, and performance in your apps.

Learn how to manage and view systemctl logs in Linux with this guide, covering essential commands and best practices for troubleshooting.

Fluentd vs Fluent Bit: Discover the key differences, use cases, and how to choose the right tool for your log processing needs.

Learn how to use the Grok Debugger effectively for log parsing, with practical tips, debugging techniques, and pattern optimization.

Explore the key differences between Filebeat and Logstash to choose the right tool for your logging setup and optimize performance.

Crontab logs help you keep your cron jobs in check. Learn how to track, debug, and optimize your cron jobs with crontab logs.

Discover the essentials of Parquet files in this fun, easy-to-follow guide to columnar storage, data compression, and efficient analytics.

Learn the essentials of Django logging, from setup to advanced configurations, and improve your debugging and monitoring skills.

Morgan npm simplifies HTTP request logging in Node.js, making it easier to monitor and debug your applications with customizable formats.

Learn how to log errors efficiently in Go using ZeroLog with best practices like structured logging, context-rich messages, and error-level filtering.

Demystifying Docker logs: From basic tail commands to advanced log management, learn how to debug and monitor containers in production.

Learn about the ELK Stack’s core components, extended ecosystem, and setup guide for efficient log management and data analysis.

Structured logging organizes log data into a consistent format, making it easier to search and analyze. This helps teams troubleshoot issues faster and improve system reliability.

Learn how to implement proper logging in Flask, from development to production, and avoid the pitfalls of scattered print statements.

Learn how to access and use Docker logs to monitor, troubleshoot, and improve your containerized apps in this simple guide for developers.

Get a clear understanding of log analytics—what it is, why it matters, and how it helps you keep your systems running efficiently by analyzing key data from your infrastructure.

Explore the logging spectrum from "Log Anything" chaos to "Log Everything" clarity. Learn structured logging best practices in Go with zap!

Our blog covers practical insights into Golang logging, including how to use the log package, popular third-party libraries, and tips for structured logging

Learn to configure, optimize, and troubleshoot log collection from various sources including syslog and application logs. Discover advanced parser operator techniques for robust observability.

Stop printing debug statements. Learn Python logging with proper log levels, formatters, handlers, and file rotation. Includes structlog, JSON logging, and production-ready patterns.