> Markdown version of [/videos/100466-your-thread-pool-is-lying-to-you-sizing-concurrency-from-rate-limits-and-latency-not-guesswork](https://www.wearedevelopers.com/videos/100466-your-thread-pool-is-lying-to-you-sizing-concurrency-from-rate-limits-and-latency-not-guesswork). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Your Thread Pool Is Lying to You — Sizing Concurrency from Rate Limits and Latency, Not Guesswork Oversized thread pool queues don't absorb bursts, they just convert them into hidden latency. Learn the exact math to correctly size your backend concurrency and protect throughput. - **Speakers:** [Ratul Ghosh](https://www.wearedevelopers.com/@ratul-ghosh) - **Event:** World Congress 2026 North America - **Published:** September 25, 2026 - **Duration:** 25:41 - **URL:** https://www.wearedevelopers.com/videos/100466-your-thread-pool-is-lying-to-you-sizing-concurrency-from-rate-limits-and-latency-not-guesswork ## Access Playback and chapters for this video are available with a Free account. ## Related Moments - [Database connection pools and the inverted throughput curve](https://www.wearedevelopers.com/videos/2048-why-systems-break-after-initial-success-the-architectural-failures-that-take-months-to-surface) (from "Why Systems Break After Initial Success: The Architectural Failures That Take Months to Surface") - [Key takeaways on aligning runtime concurrency with CPU quotas](https://www.wearedevelopers.com/videos/100053-the-hidden-costs-of-cpu-limits-in-kubernetes) (from "The Hidden Costs of CPU Limits in Kubernetes") - [The impact of latency on modern Java applications](https://www.wearedevelopers.com/videos/405-build-ultra-fast-in-memory-database-apps-and-microservices-with-java) (from "Build ultra-fast In-Memory Database Apps and Microservices with Java ") - [Preventing service overloads with concurrency rate limiting](https://www.wearedevelopers.com/videos/1551-building-resilient-net-applications-for-the-modern-age) (from "Building resilient .NET applications for the modern age") - [Why synchronous LLM calls fail at scale](https://www.wearedevelopers.com/videos/100168-event-driven-ai-agents-orchestrating-long-context-legal-processing-at-scale) (from "Event-Driven AI Agents: Orchestrating Long-Context Legal Processing at Scale") - [Recognizing common virtual thread operational pitfalls and limitations](https://www.wearedevelopers.com/videos/659-introduction-and-pitfalls-of-java-s-new-concurrency-model) (from "Introduction and pitfalls of Java's new concurrency model") ## Related Articles - [The Concept of Concurrency & Multithreading: What Are They And How They Function](https://www.wearedevelopers.com/magazine/89-the-concept-of-concurrency-multithreading-what-are-they-and-how-they-function) - [Why Event-Driven Architecture Isn’t About Speed (and When You Actually Need It)](https://www.wearedevelopers.com/magazine/745-why-event-driven-architecture-isn-t-about-speed-and-when-you-actually-need-it) - [Your AI coding tool is getting used. But is it doing anything useful?](https://www.wearedevelopers.com/magazine/758-your-ai-coding-tool-is-getting-used-but-is-it-doing-anything-useful) - [How We Built a Worry-Free System That Runs for 10+ Years – And What We’d Do Again](https://www.wearedevelopers.com/magazine/751-how-we-built-a-worry-free-system-that-runs-for-10-years-and-what-we-d-do-again) ## Related Jobs - [GPU Cluster Engineer, Systems & Platform](https://www.wearedevelopers.com/jobs/48411-gpu-cluster-engineer-systems-platform) at **Sciforium** - [GPU Cluster Engineer, Networking](https://www.wearedevelopers.com/jobs/48410-gpu-cluster-engineer-networking) at **Sciforium** - [Staff SoC Performance Architect - Next-Generation Server Platforms](https://www.wearedevelopers.com/jobs/ext/1916643-staff-soc-performance-architect-next-generation-server-platforms) at **ARM** - [Manager, Engineering, Secure Build and SCS Services](https://www.wearedevelopers.com/jobs/48447-manager-engineering-secure-build-and-scs-services) at **Docker, Inc.** - [Sr. Solution Architect](https://www.wearedevelopers.com/jobs/48433-sr-solution-architect) at **Dynatrace** - [Lead Software Engineer, Model Serving Platform](https://www.wearedevelopers.com/jobs/48413-lead-software-engineer-model-serving-platform) at **Sciforium**