Blog

    Thoughts, tutorials, and insights on software development and technology

    Webhooks in Production: Six Ways They Break, and How to Handle Each One
    Aug 26, 2026
    29 min read

    Webhooks in Production: Six Ways They Break, and How to Handle Each One

    A webhook is not an HTTP request — it is a promise, and a promise can be broken in six different ways. Duplicates, forgeries, silence, reordering, staleness and slow handlers, with real code from M-Pesa, Paystack and Meta.

    Webhooks
    Idempotency
    Node.js
    Designing Scalable Database Schemas for Web Applications
    Aug 16, 2026
    8 min read

    Designing Scalable Database Schemas for Web Applications

    A database schema is one of the hardest things to change once an application is in production. This article covers practical principles for designing schemas that stay fast, consistent, and maintainable as your application and data grow.

    Database Design
    SQL
    PostgreSQL
    From Local Development to Production: A Reliable Deployment Workflow
    Jul 31, 2026
    5 min read

    From Local Development to Production: A Reliable Deployment Workflow

    Deploying software reliably requires more than pushing code to production. This article explores a practical deployment workflow covering Docker, Git, CI/CD, staging environments, database migrations, monitoring, and rollback strategies to help developers ship software with confidence.

    DevOps
    CI/CD
    Docker
    Authentication vs Authorization: Understanding the Difference
    Jul 22, 2026
    10 min read

    Authentication vs Authorization: Understanding the Difference

    I built the messaging rule correctly and put it in the wrong place: the contact list filtered what the app showed, while the endpoint underneath would talk to anyone. How a real authorization bug happens, and what mutation-testing my own fix revealed.

    Authorization
    API Security
    OWASP
    API Security Best Practices Every Developer Should Know
    Jul 16, 2026
    6 min read

    API Security Best Practices Every Developer Should Know

    APIs power modern applications by connecting web clients, mobile apps, databases, and third-party services. Because they often expose sensitive data and business logic, securing them is essential. This article explores practical API security best practices—from authentication and authorization to monitoring and secret management—that every backend developer should understand.

    API Security
    Backend Development
    Software Engineering
    Building Production-Ready APIs: Beyond CRUD Operations
    Jul 06, 2026
    7 min read

    Building Production-Ready APIs: Beyond CRUD Operations

    Creating CRUD endpoints is an important first step in backend development, but production-ready APIs require much more. This article explores the principles and practices that transform a basic API into a reliable, secure, and maintainable service.

    Backend Development
    API Design
    FastAPI
    Why Monitoring and Observability Matter in Modern Software Engineering
    Jun 28, 2026
    6 min read

    Why Monitoring and Observability Matter in Modern Software Engineering

    Building an application is only the first step. Once software reaches production, monitoring and observability become essential for ensuring reliability, detecting issues early, and delivering a better user experience.

    DevOps
    Monitoring
    Observability
    Build a Full-Stack App with React and Supabase
    Jun 17, 2026
    5 min read

    Build a Full-Stack App with React and Supabase

    A complete tutorial on building a full-stack React and TypeScript application with Supabase — covering database setup, Row Level Security, authentication, React Query data fetching, real-time subscriptions, and Vercel deployment.

    React
    Supabase
    TypeScript
    How to Integrate M-Pesa STK Push with PHP
    Jun 04, 2026
    14 min read

    How to Integrate M-Pesa STK Push with PHP

    Getting the STK Push prompt to appear takes an afternoon. Making sure the right person is credited exactly once — even when the callback is duplicated, forged, or never arrives — takes considerably longer. A production guide in plain PHP.

    PHP
    M-Pesa
    Daraja API
    Strengthening My Backend Engineering Skills with FastAPI and Docker
    Feb 25, 2026
    2 min read

    Strengthening My Backend Engineering Skills with FastAPI and Docker

    Exploring how FastAPI and Docker have strengthened my backend development skills, improved architecture design, and introduced production-ready engineering practices.

    Python
    FastAPI
    Docker

    Harrison Aloo

    Software Engineer | Backend Developer | Open Source Enthusiast

    Connect

    © 2026 Harrison Onyango Aloo. All rights reserved.

    Chat on WhatsApp