Build, Deploy, and Troubleshoot Modern Systems
Command-driven tutorials for Linux, containers, Kubernetes, backend development, web standards, security, and production operations.
Browse latest tutorials$ kubectl get pods -A
$ docker compose up -d
$ php -v
$ node --version
$ python --versionExplore tutorial series
Docker
Practical Docker tutorials covering installation, container lifecycle, images, Dockerfiles, storage, networking, security, troubleshooting, and production operations.
Kubernetes
Practical Kubernetes tutorials covering cluster installation, workloads, networking, storage, scaling, security, and operations.
Node.js
Hands-on Node.js tutorials for backend development, testing, security, containers, Linux, and Kubernetes.
Python
Practical Python tutorials for development, automation, testing and deployment.
HTML
Original HTML tutorials covering documents, forms, graphics, media, browser APIs, accessibility, examples, and references.
PHP
Practical PHP 8.3 tutorials for language fundamentals, web development, security, databases, testing, and deployment.
Products from LAPVN
Selected products currently available for enquiries.
Remote Pig Health Support & Herd Monitoring
Structured remote support for pig health observations, herd trends, video walkthroughs, monitoring records, triage, biosecurity, and coordination with licensed local veterinarians.
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Pig Farm Design & Planning Consulting
Professional pig farm concept design covering site layout, production flow, ventilation, water, feed, drainage, waste management, biosecurity, welfare, and expansion planning.
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DevOps Infrastructure Consulting & System Design
Architecture consulting for Kubernetes, Docker, MariaDB, MongoDB, ELK, CI/CD, observability, security, backups, migrations, and production operations.
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Lai Thieu A26 Grower Pig Feed – 20 to 40 kg
Complete powder or pellet feed for grower pigs in the approximate 20–40 kg stage. Contact LAPVN for current packaging, stock, pricing, and delivery.
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Lai Thieu Premium A20 Piglet Feed – 8 to 20 kg
Complete powder or pellet feed for young pigs in the approximate 8–20 kg stage. Contact LAPVN for current packaging, stock, pricing, and delivery.
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Lai Thieu Premium A10 Piglet Creep Feed
Complete powder or pellet creep feed for suckling piglets from approximately 5 days of age to about 8 kg. Contact LAPVN for current stock,…
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Fresh Young Coconuts for Drinking Water
Fresh young coconuts selected for naturally refreshing drinking water and tender flesh. Contact us for current harvest availability, quantities, pricing, collection, and delivery options.
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Pure Coconut Caramel Coloring Sauce
Pure coconut caramel coloring sauce with a rich amber color for Vietnamese braises, marinades, clay-pot dishes, and savory sauces.
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Young Wild Boar Piglets – 3.5 to 5 kg
Healthy young wild boar piglets in the 3.5–5 kg range. Contact us for availability, current pricing, quantity, and eligible delivery options.
View product →Latest tutorials
Upgrade a Java 21 Project to Java 25 Safely
A practical upgrade Java 21 to Java 25 tutorial with runnable code, verification, troubleshooting, security, and production guidance.
Read tutorial →Secure Java Applications: Dependencies, Secrets, and TLS
A practical Java application security tutorial with runnable code, verification, troubleshooting, security, and production guidance.
Read tutorial →Java JVM Memory and Garbage Collection in Containers
A practical JVM memory and garbage collection tutorial with runnable code, verification, troubleshooting, security, and production guidance.
Read tutorial →Deploy a Java Application to Kubernetes
A practical Java Kubernetes deployment tutorial with runnable code, verification, troubleshooting, security, and production guidance.
Read tutorial →Dockerize a Java 25 Application with a Multi-Stage Build
A practical Dockerize Java 25 tutorial with runnable code, verification, troubleshooting, security, and production guidance.
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Java Logging with SLF4J and Logback in Production
A practical Java production logging tutorial with runnable code, verification, troubleshooting, security, and production guidance.
Read tutorial →Test Java Applications with JUnit 6
A practical JUnit 6 testing tutorial with runnable code, verification, troubleshooting, security, and production guidance.
Read tutorial →Gradle Tutorial for Java 25 with Toolchains
A practical Gradle Java 25 toolchains tutorial with runnable code, verification, troubleshooting, security, and production guidance.
Read tutorial →Maven Tutorial for Java 25: Build, Test, and Package
A practical Maven Java 25 tutorial with runnable code, verification, troubleshooting, security, and production guidance.
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Build a JSON REST API with Java 25 and Spring Boot
A practical Spring Boot REST API tutorial with runnable code, verification, troubleshooting, security, and production guidance.
Read tutorial →Connect Java to PostgreSQL Securely with JDBC
A practical Java JDBC PostgreSQL tutorial with runnable code, verification, troubleshooting, security, and production guidance.
Read tutorial →Java Date and Time API: UTC, Zones, and Formatting
A practical Java date and time API tutorial with runnable code, verification, troubleshooting, security, and production guidance.
Read tutorial →Read and Write Files Safely with Java NIO
A practical Java NIO file handling tutorial with runnable code, verification, troubleshooting, security, and production guidance.
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Java Virtual Threads: Build a Concurrent HTTP Checker
A practical Java virtual threads tutorial with runnable code, verification, troubleshooting, security, and production guidance.
Read tutorial →Java Streams, Lambdas, and Optional Without Misuse
A practical Java streams and Optional tutorial with runnable code, verification, troubleshooting, security, and production guidance.
Read tutorial →Java Collections and Generics with Practical Examples
A practical Java collections and generics tutorial with runnable code, verification, troubleshooting, security, and production guidance.
Read tutorial →Java Exceptions and Try-with-Resources Explained
A practical Java exception handling tutorial with runnable code, verification, troubleshooting, security, and production guidance.
Read tutorial →Object-Oriented Java with Classes, Records, and Sealed Types
A practical Java classes, records, and sealed types tutorial with runnable code, verification, troubleshooting, security, and production guidance.
Read tutorial →Java Methods, Overloading, Varargs, and Parameter Passing
A practical Java methods and overloading tutorial with runnable code, verification, troubleshooting, security, and production guidance.
Read tutorial →Java 25 Syntax, Variables, Types, and Control Flow
A practical Java 25 syntax tutorial with runnable code, verification, troubleshooting, security, and production guidance.
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How to Install Java 25 on Ubuntu 24.04
Install OpenJDK 25 on Ubuntu 24.04, configure JAVA_HOME, select the default JDK, and compile and run a complete Java program.
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What Is OpenClaw? A Complete Guide to the Open-Source Personal AI Assistant
What is OpenClaw? Learn how this open-source personal AI assistant works, what it can do, how to install it, and what security…
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Deploy a PHP Application to Kubernetes
A practical PHP Kubernetes tutorial for PHP 8.3 with runnable code, verification steps, troubleshooting, security guidance, and production best practices.
Read tutorial →Run PHP, Nginx, MySQL, and Redis with Docker Compose
A practical PHP Docker Compose tutorial for PHP 8.3 with runnable code, verification steps, troubleshooting, security guidance, and production best practices.
Read tutorial →Commands you can run. Results you can verify.
Implementation, checks, troubleshooting, and rollback considerations in every guide.