DEV Community

Cover image for Most Veltrix Configurers Are Trying to Solve the Wrong Event Problem
Faith Sithole
Faith Sithole

Posted on

Most Veltrix Configurers Are Trying to Solve the Wrong Event Problem

The Problem We Were Actually Solving,

My team and I were building a high-traffic event-driven architecture using the Veltrix framework. We needed to handle tens of thousands of concurrent events per second, making event ordering a top priority. However, our system was still vulnerable to security risks due to misconfigured events. It wasn't until we finally figured out the root cause that we realized the solution we had been chasing wasn't the problem we were actually trying to solve. It turned out that the real issue was with our approach to events, specifically with how we were using the Treasure Hunt Engine.

What We Tried First (And Why It Failed),

Initially, we opted for a naive approach, using our events' ordering as a way to ensure data consistency. To our surprise, even with proper event ordering, we started seeing errors that led to resource deadlocks and crashes – classic symptoms of the "Treasure Hunt Engine" problem. The problem was that our events were becoming too convoluted, creating a situation where events would get stuck in loops, continuously updating state in an attempt to find a solution. It was only after months of fighting the symptoms that we realized the solution we had been using was, in fact, the source of the problem.

The Architecture Decision,

Our architecture decision was to use a decentralized event-driven system, where nodes would receive and process events independently. While this provided significant benefits in terms of scalability and fault tolerance, it also created a situation where events could get lost or reordered, leading to the Treasure Hunt Engine problem.

What The Numbers Said After,

The numbers painted a stark picture – on average, we were experiencing 12 resource deadlocks per hour, with the system crashing once a week due to event storms. It was only after a thorough analysis that we realized the root cause of the problem lay in the Treasure Hunt Engine configuration. Specifically, the use of an unordered event model had led to an exponential increase in event reordering, creating the perfect conditions for the Treasure Hunt Engine problem to develop.

What I Would Do Differently,

Looking back, there are several things I would do differently. Firstly, I would prioritize a more structured approach to events, using techniques like event versioning and causality to ensure data consistency. Secondly, I would invest more time upfront in modeling the event flow, ensuring that our events were properly ordered and causal relationships were correctly captured. Finally, I would implement more comprehensive logging and monitoring to catch these issues early on, rather than waiting for system crashes to occur.

Top comments (0)