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AWS Lambda with API Gateway

In a previous post I showed you how to create and deploy an AWS Lambda. We will continue that work and look at updating just the code for that lambda. We will also add a REST endpoint to the AWS Lambda using AWS API Gateway....


AWS Lambda for Beginners

AWS Lambda is a compute service from Amazon. It makes deployment and provisioning very simple and fits very well with microservices based architecture. You can find out more about AWS Lambda here. Currently supported platforms are JVM, Node JS and Python. The programming model for...


Coupling in distributed systems

Coupling and cohesion are key quality indicators. We strive for systems highly cohesive and loosely coupled, but high doesn't mean pure. The same goes with functional programming, we aim for isolating and reducing side effects, but we need them unless we want a useless system....


Premature Microservices

Building your app from the very start as microservices is not a great idea! Their deployment is complex - regardless of how good your microservices infra is. They create boundaries in your application that resist change. Software applications are complex systems and complex systems are...


Transcending REST and RPC

It seems that a new paradigm is coming. Facebook and Netflix have come up with different implementations for that idea. Some people are calling it Demand-Driven Architecture, but before I show you some solutions, let's go over some history to understand the problem. I will...