Ruby 3.3 ships with Prism, a new experimental Ruby parser, and RJIT, a new JIT compiler aimed at improving performance in production environments.

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Ruby 3.1 ships with YJIT, a new JIT compiler built by Shopify that improves performance for real-world Ruby apps.

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Rails 6.1 introduces `:destroy_async`, allowing associated records to be deleted via background jobs—improving performance and preventing long request times.

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Rails 6.1 adds strict loading mode, which raises errors when accessing associations that weren’t eager-loaded.

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Ruby 2.6 introduces an experimental Just-In-Time compiler to boost performance, a major step in Ruby’s journey toward faster execution.

Jan 05, 2019RubyRuby 2.6Performance