In recent years, event-driven systems have gained popularity among large companies. This article explores the main reasons behind this trend and identifies four common mistakes that can occur when implementing this architecture. The author, The Bored Dev, provides insights and advice to avoid these mistakes and optimize event-driven systems. With a focus on real-world examples and practical solutions, this article is a must-read for developers and architects working with event-driven systems. Note: this article was published on Mediums Better Programming platform on Oct 11, 2022 and is a member-only content.