/tags/concurrency/ Recent content in Concurrency on Tyler Stapler's Personal Website Hugo en-us Copyright © by Tyler Stapler Sun, 26 Apr 2026 00:00:00 +0000 /blog/structured-concurrency-footgun/ Sun, 26 Apr 2026 00:00:00 +0000 /blog/structured-concurrency-footgun/ The concurrency model you choose is an implicit contract with your entire team. Kotlin coroutines are brilliant engineering — but they make a promise the JVM’s type system cannot enforce, and the failure modes are silent, gradual, and catastrophic. Here’s why we deprecated Reactor the week virtual threads hit GA, and what we’d tell ourselves before we started.