Rails 8 Upgrade Cuts Response Times 18% and Eliminates Redis Dependency

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A development team migrated a mid-sized application from Rails 7 to Rails 8 and documented concrete performance improvements across multiple areas. Rails 8's Solid Queue, Solid Cache, and Solid Cable allowed the team to replace Redis and Sidekiq with database-backed alternatives, reducing infrastructure costs and operational complexity. The upgrade delivered roughly 18% faster average response times, 25% higher background job throughput, and a 15% reduction in CI pipeline duration. Asset pipeline changes via Propshaft and import maps also cut deployment compile times, while tighter Kamal 2 integration simplified zero-downtime releases. The team noted the migration required significant effort, especially around Solid Queue adoption and deprecated API audits, but concluded the gains justified the investment.

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ProgrammingDEV Community ·

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ProgrammingDEV Community ·

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ProgrammingDEV Community ·

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