Multithreading is an essential component of building high-performance applications. Efficient multithreaded processing demands not just the ability to execute tasks concurrently but also mechanisms to control the flow and prevent resource exhaustion. Java provides Executors for managing threads and task execution, while Guava’s RateLimiter offers a robust way to limit throughput. This article explores in detail how to configure these tools to achieve optimal multithreading performance, diving deep into their setup, usage, and the nuances that make them effective.