Latest Articles

Things break. The question is not whether your app will hit an error, it is how gracefully it recovers. Here is how I think about error handling across the frontend, backend, and queue consumers, with real patterns from the apps I run.

Validation is one of those topics that feels boring until something goes wrong in production. Here is how I think about validation across the stack, with real examples from the apps I run.

A practical guide to Claude Code's plugin system - hooks, skills, and commands. I built Claude Overflow to learn how it all fits together.

How I designed Jobven's public API with cursor-based pagination, flexible filtering, and incremental sync - decisions that make integration straightforward for developers.

Jobven is a job posting API that collects listings directly from employer career pages. Fresh, structured job data for developers building job boards and recruiting tools.

Learn how I implemented a complete WordPress-like tagging system in Nuxt Content, including tag pages, filtering, and content discovery features.

Learn how I rebuilt my website from WordPress to Nuxt, including the reasons behind the change, migration steps, and important considerations for SEO and performance.

A comprehensive checklist for setting up a secure VPS server with Ubuntu. Covers system updates, user management, SSH configuration, firewall setup, and security tools.

Learn how to use PostgreSQL enums with arrays for data validation and integrity. Complete guide with examples and PostgreSQL 16 updates.

KidzLog is a comprehensive childcare management system designed to streamline operations for childcare providers, from attendance tracking to billing and payments.

Learn three effective methods to handle cron jobs in a multi-instance NestJS environment. From named instances to database locking strategies.

FindChildcare.ca is a comprehensive directory of home and center-based childcare providers across Canada, designed to help parents find childcare easily.

Learn how to set up and debug multiple NestJS applications simultaneously in VSCode. Complete guide with launch.json configuration and debugging tips.

SpellCheckMySite.com is a simple tool that finds spelling mistakes on a web page. You provide a URL, it scans it and shows possible spelling mistakes.

Learn how to integrate Google reCAPTCHA v3 with your NestJS application in just 3 easy steps. Complete guide with code examples for spam protection.

Explore how check constraints in PostgreSQL can be used for effective value validation, offering flexibility and control over data integrity.

Explore how Mailgun enhances MapleStack’s email capabilities, ensuring reliable delivery, scalability, and detailed analytics for effective user communication.

Explore how Let’s Encrypt provides free SSL/TLS certificates, enhancing security and trust for MapleStack.

Explore how AWS S3 provides scalable and secure storage for MapleStack, handling everything from job listings to user data.

Explore how AWS Cognito simplifies user authorization in MapleStack, enhancing security and scalability while streamlining user management.

Explore how Tailwind CSS enhances MapleStack’s UI with utility-first styling, enabling rapid design iterations and responsive layouts.

Explore how React powers MapleStack’s frontend, enabling dynamic and interactive user experiences.

Discover how NestJS serves as the backbone of MapleStack, handling server-side operations like API requests, data scraping, and scheduled tasks.

Discover how PostgreSQL serves as the backbone of MapleStack, providing reliable and scalable data storage for job listings, applications, and user management.

MapleStack is a job board connecting companies to tech talents in Canada. It focuses on jobs in the technology field from software developers, to product managers, UX designers and social media managers.

Learn how to quickly resolve a blacklisted domain issue with SpamHaus. Step-by-step guide to get your domain removed from blacklists and prevent future issues.

Comparing ChatGPT and Bard AI tools while building MapleStack's waitlist form. Learn how I used AI to generate React components and AWS Lambda functions in minutes.

Learn how to solve the N+1 problem in GraphQL using DataLoader for batching and caching requests. Practical examples with Apollo Server and TypeScript.

Learn how to set up a GraphQL server in NodeJS using Apollo, KoaJS and TypeScript. Complete guide with schema creation, resolvers, and practical examples.

Learn how to set up your NodeJS development environment with TypeScript for type safety and better error handling. Build a simple KoaJS web server with TypeScript configuration.

Learn how to build a custom content slider or carousel in Angular that can display any type of HTML content, including images, text, and videos.

Saza wallet is an open source mobile and desktop wallet for Stellar. It supports all Stellar operations, including the sparsely supported path-payment operation.

Learn how to create pre-authorized transactions on the Stellar network using JavaScript. This guide covers the multi-signature feature and how to build a pre-authorized payment transaction.

Hi, welcome to oliha.dev! Here, I will be sharing my thoughts and experiences on things that I am currently working on, past work and my interests.