Seek and destroy the bottlenecks in your code

Jacob’s Tech Tavern

The post discusses the performance optimization process for a Swift app called Check 'em - The Based 2FA App. The biggest performance bottleneck is the processing of TOTP codes and their 'interestingness'. The post suggests replacing regexes with more efficient algorithms and introducing parallelism to the TOTP calculation process. It also highlights the importance of fetching accounts and generating codes early in the app launch.

High Performance Swift Apps