Messaging

What’s Event Choreography Workflow? Let’s back up a bit to answer that. Event Driven Architecture is a way to make your system more extensible and loosely coupled. Using events as a way to communicate between service boundaries. But how do you handle long-running business processes and workflows that involve multiple services? Using RPC is going back to tight coupling, which we’re trying to avoid with Event Driven Architecture. So what’s a solution? Event Choreography. YouTube Check out my YouTube channel, where I post all kinds of content accompanying my posts, including this video showing everything in this post. RPC So why not… Read More »Event Choreography for Loosely Coupled Workflow

The world is asynchronous. Many workflows and business processes you encounter out in the world are long-running and driven by asynchronous systems. Yet as developers, we’re still often writing procedural and synchronous code to model these business processes. I will give one of my favorite examples of going out to eat at a restaurant to illustrate this and how this can be applied to software. YouTube Check out my YouTube channel, where I post all kinds of content accompanying my posts, including this video showing everything in this post. Asynchronous Chicken Wings? One of my favorite ways to explain asynchronous workflows is… Read More »The world is full of Asynchronous Workflow

What’s Event Carried State Transfer, and what problem does it solve? Do you have a service that requires data from another service? You’re trying to avoid making a blocking synchronous call between services because this introduces temporal coupling and availability concerns? One solution is Event Carried State Transfer. YouTube Check out my YouTube channel, where I post all kinds of content accompanying my posts, including this video showing everything in this post. Temporal Coupling If you have a service that needs to get data from another service, you might just think to make an RPC call. There can be many reasons for… Read More »Event Carried State Transfer: Keep a local cache!