CUTTING CI PIPELINE TIME BY 64%: WHAT ACTUALLY WORKS IN PRODUCTION

Summary from the TLDR DevOps newsletter

An engineering team reduced their Merge Train pipeline duration from one hour to 22 minutes, a 64% reduction. They achieved this while growing their test suite by 90% and improving CI health from 82% to above 90%. Infrastructure costs rose roughly 10%, but the team estimates they regained over 1,300 engineer hours previously lost to delays and retries. Key changes included upgrading to Intel hardware and separating service tests from browser-based tests.