--- title: Debugging Event-Driven Systems: 5 Problems Teams Create description: A response to a widely shared Medium post about a team struggling to debug after switching to event-driven architecture. The five pain points—broken tracing... canonical: https://daily.dev/posts/debugging-event-driven-systems-5-problems-teams-create-aj84i8lfo twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Debugging Event-Driven Systems: 5 Problems Teams Create | daily.dev og:description: A response to a widely shared Medium post about a team struggling to debug after switching to event-driven architecture. The five pain points—broken tracing... og:url: https://daily.dev/posts/debugging-event-driven-systems-5-problems-teams-create-aj84i8lfo og:image: https://api.daily.dev/og/posts/AJ84I8LFo.png og:image:alt: Debugging Event-Driven Systems: 5 Problems Teams Create og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Debugging Event-Driven Systems: 5 Problems Teams Create **[CodeOpinion](https://daily.dev/sources/codeopinion)** · [@codeopinion](https://daily.dev/codeopinion) · 11 min read · 0 upvotes · 0 comments ## Summary A response to a widely shared Medium post about a team struggling to debug after switching to event-driven architecture. The five pain points—broken tracing with Kafka, dead letter queues becoming unmanageable, over-reliance on fire-and-forget messaging, eventual consistency complicating accountability, and painful integration testing—are reframed as misunderstandings of EDA rather than inherent flaws. Key arguments include the distinction between commands (verbs, single consumer, invoking behavior) and events (facts, past tense, any number of consumers), the idea that tracing problems are tooling issues solvable with OpenTelemetry and messaging libraries with built-in instrumentation, that dead letter queues need visibility and replay tooling to be useful, that not everything needs to be async, and that testing should isolate producer and consumer concerns rather than spinning up the whole distributed system. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### What is the difference between a command and an event in event-driven architecture? Commands invoke behavior and are owned by the consumer, since only one boundary should handle a given command; they are named with verbs because they represent wanted actions. Events are facts stating something already happened, owned by the publisher, named in the past tense, and may have zero, one, or many consumers who the publisher does not need to care about. _daily.dev surfaces architecture deep dives like this for engineers untangling command versus event design._ ### Why does distributed tracing break when a team migrates from HTTP services to Kafka messaging? Tracing usually breaks not because async systems are untraceable but because teams lose the instrumentation they had with HTTP tools like OpenTelemetry paired with Zipkin or Jaeger. OpenTelemetry works equally well with asynchronous messaging, but teams often use broker SDKs directly instead of a messaging library with tracing built in, leaving the workflow invisible. _Developers wiring up observability for Kafka-based systems can track these tooling lessons on daily.dev._ ### Why do dead letter queues in a message broker end up useless for debugging failed messages? A dead letter queue is just storage, so without the ability to inspect a failed message, see its error or exception, and replay it, it becomes an unmanageable graveyard of mystery failures. Teams need visibility correlating each failed message with its actual error to decide whether it's a code bug, a poison message, or a transient failure worth retrying. _Teams building resilient messaging pipelines can follow practical dead letter queue patterns on daily.dev._ ## Similar posts on daily.dev - [Elevate Your Messages](https://daily.dev/posts/elevate-your-messages-qakvt9dwr) · Event Store · 0 upvotes · 0 comments - [Event-Driven Architecture in .NET Core Using RabbitMQ](https://daily.dev/posts/event-driven-architecture-in-net-core-using-rabbitmq-btcsrhdsv) · C\# Corner · 21 upvotes · 0 comments - [Event-Driven Architecture with Spring Boot and AWS EventBridge: Escaping the Distributed Monolith](https://daily.dev/posts/event-driven-architecture-with-spring-boot-and-aws-eventbridge-escaping-the-distributed-monolith-vut2syvqf) · Sergio Lema · 49 upvotes · 0 comments - [Scaling Java-Based Real-Time Systems: The Hidden Tradeoffs of Event-Driven Design](https://daily.dev/posts/scaling-java-based-real-time-systems-the-hidden-tradeoffs-of-event-driven-design-ef85inlwt) · InfoQ · 8 upvotes · 1 comments --- Tags: [#architecture](https://daily.dev/tags/architecture), [#observability](https://daily.dev/tags/observability), [#microservices](https://daily.dev/tags/microservices), [#distributed-systems](https://daily.dev/tags/distributed-systems), [#kafka](https://daily.dev/tags/kafka) [View this post on daily.dev](https://daily.dev/posts/debugging-event-driven-systems-5-problems-teams-create-aj84i8lfo) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Debugging Event-Driven Systems: 5 Problems Teams Create","url":"https://daily.dev/posts/debugging-event-driven-systems-5-problems-teams-create-aj84i8lfo","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/debugging-event-driven-systems-5-problems-teams-create-aj84i8lfo"},"datePublished":"2026-10-04T13:07:05.878Z","dateModified":"2026-10-05T10:00:17.801Z","description":"A response to a widely shared Medium post about a team struggling to debug after switching to event-driven architecture. 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