Explore strategies for writing fast, efficient code in this 47-minute conference talk from GoLab. Delve into the challenges of optimizing seemingly unoptimizable code, learn to identify acceptable trade-offs for speed increases, and discover how to structure your approach to creating high-performance software. Examine the importance of responsive code in an era of increasing computational loads, and gain insights into designing scalable systems from the ground up. Cover topics ranging from management-level considerations to assembly code optimization, data flow analysis, and both horizontal and vertical scaling techniques. Develop a mindset for building responsive systems and learn to distinguish between current best practices and outdated information in the rapidly evolving field of efficient coding.