Go JSON v2 package arrives in Go 1.25 with significant performance improvements and new features. Performance profiling techniques using pprof help identify bottlenecks by comparing profiles. Cloud66 shares their 2025 Go stack choices for configuration, CLI, HTTP, ORM, and dependency injection. New tools include Charm Fang for enhanced CLI development and various experimental projects like SSHTron multiplayer game and Mochi embeddable language.
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