kozylife

As microservice architectures become mainstream, secure inter-service communication is no longer optional—it's essential. This becomes especially critical when one service needs to create and manage users in another service, requiring an authentication system that satisfies both security and scalability requirements.Today, I'll introduce a practical pattern for implementing service-to-service (S..

When building serverless applications, you'll often face the challenge: "How can I assign different permissions to different users in a secure and scalable way?" This becomes especially critical for services like B2B SaaS platforms or e-commerce systems where user roles are clearly defined.Today, I'll show you how to implement a group-based permission management authentication system using Amazo..

When developing serverless applications, you often encounter situations where "additional processing is needed only under specific conditions." For example, sending notifications only when a user's score is low, or executing additional review processes only for requests that don't meet certain thresholds.Today, I'll introduce the EventBridge-Lambda conditional processing pattern that's useful in..

In my previous post, I introduced Configuration-Driven Multi-Lambda Architecture as an effective way to manage multiple Lambda functions. We successfully managed 13 Lambda functions with a single configuration file, eliminating over 90% of code duplication. However, when operating multiple Lambda functions, you'll inevitably encounter another critical challenge.That challenge is common library m..

In the rapidly evolving landscape of serverless development, certain architectural patterns have emerged as indispensable tools for enterprise-scale applications. As someone who has navigated the complexities of real-world serverless projects, I want to share a battle-ested development pattern that has proven invaluable in production environments. This blog post focuses on a configuration-driven..