November 3, 2025
Use Linux `taskset`, `nice`, and `renice` to tune CPU affinity and process priority without starving critical work.
Diagnose Linux disk I/O latency with iostat, iotop, pidstat, vmstat, logs, and practical workload checks.
Tune Linux swappiness and VFS cache behavior carefully, with workload examples, sysctl commands, and validation steps.
Unlock the full potential of Linux performance monitoring with this practical guide to the Sysstat toolset. Learn how to install and configure Sysstat for historical logging and master the use of the powerful `sar` utility. This article provides actionable command examples for analyzing CPU utilization, memory pressure, disk I/O saturation, and network activity, enabling administrators to establish performance baselines and quickly diagnose and resolve system bottlenecks in production environments.
Diagnose seven common PostgreSQL performance bottlenecks, from slow plans and bad indexes to autovacuum, memory, pooling, and locks.
Use PgBouncer to reduce PostgreSQL connection overhead, choose a pooling mode, size pools, and monitor client pressure.
Prevent PostgreSQL bloat with safer autovacuum tuning, manual VACUUM guidance, index maintenance, and transaction ID monitoring.
Choose PostgreSQL index types for equality, range, JSONB, arrays, full-text, spatial, and large time-series queries.
Unlock PostgreSQL performance with our comprehensive guide to EXPLAIN ANALYZE. Learn to interpret query execution plans, identify bottlenecks, and optimize your SQL queries. This guide covers essential concepts, node types, output interpretation, and practical optimization strategies with actionable examples. Master your database performance by understanding how PostgreSQL runs your queries.
Unlock secure and flexible Docker deployments by mastering environment variables. This comprehensive guide clarifies the critical distinction between using environment variables for general application configuration and securely managing sensitive data like API keys and passwords. Learn practical methods for passing non-sensitive settings, understand the severe risks of exposing secrets via environment variables, and discover how to leverage Docker Secrets and Compose for robust, encrypted secret management. Elevate your Docker knowledge and safeguard your applications.
Harden Docker images by using non-root users, smaller bases, multi-stage builds, secret handling, and vulnerability scans.
Compare Docker named volumes, bind mounts, and tmpfs mounts for persistent data, development, and temporary storage.