ITNotes - Page 33 of 119 - From Terminal to Cloud

Scaling Real-time Leaderboards to 10M+ Users with Redis Sorted Sets

June 13, 2026

Is your database struggling with ranking millions of users? Learn how we migrated to Redis Sorted Sets to achieve sub-millisecond leaderboard updates at scale.

Linux

Mastering Sysstat on Linux: Using sar, iostat, and mpstat to Diagnose Intermittent Performance Issues

June 13, 2026

When your server was slow three hours ago but looks fine now, sysstat gives you the historical data to find out why. This guide covers installing and configuring sar, iostat, and mpstat on Linux, and walks through a real incident investigation workflow to diagnose intermittent CPU, I/O, and memory issues.

Linux

Managing Shared Libraries on Linux: ldconfig, ldd, and LD_LIBRARY_PATH Explained

June 13, 2026

Fix 'library not found' errors on Linux by understanding how the dynamic linker finds shared libraries. This guide covers ldconfig, ldd, and LD_LIBRARY_PATH with practical examples for real-world debugging and system setup.

DevOps

Deploying to Google Kubernetes Engine: GKE Autopilot vs Standard, CI/CD Setup, and Real Cost Numbers

June 13, 2026

After 6 months running production workloads on GKE, here's an honest comparison of Autopilot vs Standard mode with real cost numbers, a working CI/CD pipeline using Cloud Build, and three specific optimizations that cut our bill by 38%.

DevOps

AWS CDK with TypeScript: Build Cloud Infrastructure Without Writing a Single Line of YAML

June 12, 2026

CloudFormation YAML gets unmanageable fast. AWS CDK lets you define AWS infrastructure in TypeScript — with type safety, loops, and reusable constructs that generate the CloudFormation template automatically. This guide walks through building a real S3 + Lambda + API Gateway stack from scratch.

DevOps

Docker Swarm: The Pragmatic Orchestrator for Small to Medium Projects

June 11, 2026

Docker Swarm offers a powerful, lightweight alternative to Kubernetes. Learn how to set up a cluster, deploy scalable stacks, and manage production workloads with ease.

Linux

Stop Disk Space Crashes: A Practical Guide to Linux Quotas and edquota

June 11, 2026

Disk space exhaustion can crash a server in seconds. This guide shows you how to use Linux quotas and edquota to set hard and soft limits for users, keeping your shared systems stable.

Programming

Mastering Go Error Handling: A Guide to errors.Is, errors.As, and Custom Wrappers

June 9, 2026

Learn how to handle errors effectively in Go using modern techniques. This guide covers the differences between sentinel errors, wrapping with %w, and using errors.Is and errors.As for robust production code.

Programming

Stop Waiting for Pandas: A Practical Guide to Polars for Massive Datasets

June 9, 2026

Is Pandas crashing your system? Discover how Polars uses Rust, multi-threading, and lazy evaluation to process massive datasets up to 10x faster with a fraction of the memory.

Programming

Type-safe SQL Queries with Kysely: The Lightweight Alternative to Bulky ORMs

June 9, 2026

Kysely offers the power of raw SQL with the safety of TypeScript. Learn how to replace heavy ORMs with a lightweight, type-safe query builder for your Node.js projects.

Speed Up Python with Numba JIT: Make Heavy Data Processing 100x Faster

CDK for Terraform (CDKTF) with Python: Deploy Cloud Resources Without Writing HCL

Clean Up Your Java Code: A Practical Guide to Vavr

Stop Deploying Broken Docker Images: A Guide to Container Structure Tests

Mastering Golang Memory Profiling: A Practical Guide with pprof

Stop Storing Secrets in Git: A Guide to 1Password Connect on Kubernetes

Building a Network Performance Testbed: High-Speed Testing with TRex on Linux

Stop Writing Boilerplate: A Guide to Python Dataclasses, Attrs, and Pydantic

Build Your Own Private 5G Network: A Hands-On Guide with Open5GS and srsRAN

Mastering Socket.IO in Node.js: Building Secure, Production-Ready Real-Time Apps

Scaling Real-time Leaderboards to 10M+ Users with Redis Sorted Sets

Mastering Sysstat on Linux: Using sar, iostat, and mpstat to Diagnose Intermittent Performance Issues

Managing Shared Libraries on Linux: ldconfig, ldd, and LD_LIBRARY_PATH Explained

Docker Swarm: The Pragmatic Orchestrator for Small to Medium Projects

Stop Disk Space Crashes: A Practical Guide to Linux Quotas and edquota

Mastering Go Error Handling: A Guide to errors.Is, errors.As, and Custom Wrappers

Stop Waiting for Pandas: A Practical Guide to Polars for Massive Datasets

Type-safe SQL Queries with Kysely: The Lightweight Alternative to Bulky ORMs