Profile-Guided Optimization in Go 1.21: Improving Performance with PGO

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The article introduces profile-guided optimization (PGO) in Go 1.21, a feature that aims to improve the performance of Go binaries. PGO allows the compiler to make more informed decisions about optimizations by using profiles of application behavior. By analyzing the most frequently used functions and selecting common cases, the compiler can generate a better-performing binary. The article explains how PGO works and its benefits. It also mentions the improvements made in Go 1.21 based on community feedback and contributions. Developers interested in optimizing their Go applications can refer to the profile-guided optimization user guide for complete documentation. PGO is a valuable tool for developers looking to enhance the performance of their Go code.