Scale By The Bay 2019: Ahir Reddy & Li Haoyi, Speedy Scala Builds at Databricks

ai.bythebay.io Nov 2025, Oakland, full-stack AI conference Building Scala code in general can be really slow. To speed this up, Databricks' Developer Tools team has taken on a variety of projects to attack the problem from different angles - from JVM tuning to cloud infrastructure - resulting in build times that are significantly less infuriating. This talk will walk you through the details of each project, and attach concrete numbers to exactly how much of a difference each one made in this year-long effort.