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!
I advocate a lot for asynchronous messaging. It can add reliability, temporal decoupling, and much more. But what are some of the challenges? One of them is backpressure and flow control. This occurs when you’re producing more messages can you can consume. Meaning you’re piling up messages in your queue and you can never catch up. The queue just keeps growing. YouTube Check out my YouTube channel where I post all kinds of content that accompanies my posts including this video showing everything in this post. Producers and Consumers Producers send messages to a broker/queue and a Consumer processes those messages. For… Read More »Avoiding a QUEUE Backlog Disaster with Backpressure & Flow Control