Joche Ojeda
Understanding Keycloak: An Identity Management Solution for .NET Developers
Keycloak is an open-source Identity and Access Management solution that provides centralized authentication and Single Sign-On capabilities across multiple applications. For .NET developers, it offers seamless integration through standard protocols like OpenID Connect, eliminating authentication fatigue while providing cost-effective, vendor-independent identity management with extensive customization options for modern applications.
MailHog: The Essential Email Testing Tool for .NET Developers
MailHog is an essential open-source email testing tool that captures emails sent by your .NET applications instead of delivering them to real recipients. Perfect for testing authentication workflows, password resets, and user registration processes, MailHog provides a clean web interface to view and inspect captured emails in real-time. Easy to install on WSL using an automated script, it integrates seamlessly with System.Net.Mail and works as a drop-in replacement for production SMTP servers. With features like API access, message persistence, and failure testing, MailHog eliminates the risks and complexity of email testing during development.
Understanding the N+1 Database Problem using Entity Framework Core
The N+1 database problem is a performance killer that silently destroys application speed. This comprehensive test suite demonstrates how innocent-looking code can generate hundreds of unnecessary database queries instead of one efficient query. Through 12 detailed test cases using Entity Framework Core, we explore the difference between problematic lazy loading approaches that create 4+ queries and optimized solutions using Include() that require just 1 query. Real examples show 75% performance improvements, with actual SQL output revealing what happens under the hood. Learn projection, eager loading, split queries, and batch loading patterns to build applications that stay fast as they scale.
Day 4 (the missing day): Building Data Import/Export Services for Your ERP System
In Day 4 of our ERP development series, we tackle a crucial but often overlooked feature: data import/export services. Learn how to build robust CSV import/export functionality for Chart of Accounts, including error handling, validation, and testing strategies that you can apply throughout your enterprise system.
Building a Comprehensive Accounting System Integration Test – Day 5
This article explores the implementation of a comprehensive integration test for an accounting system, demonstrating how Document and Chart of Accounts modules work together. Using a collection-based approach to simulate database interactions, the test validates double-entry accounting principles while ensuring proper transaction processing and balance verification across various business scenarios.
Understanding the Chart of Accounts Module: Day 3 – The Backbone of Financial Accounting Systems
The chart of accounts module forms the foundation of any accounting system, organizing financial transactions by categorizing accounts. A well-designed implementation includes entity definitions, type enumerations, validation logic, and balance calculation functionality—all working together to support accurate financial reporting while adhering to SOLID design principles.