# How GitLab Built a Single Codebase for One Million CI Pipelines

Page: https://stenobird.com/podcast/the-cto-podcast-with-fexingo-technical-leadership-architecture-and-engineering-org-7871807/how-gitlab-built-a-single-codebase-for-one-million-ci-pipelines
Text version: https://stenobird.com/podcast/the-cto-podcast-with-fexingo-technical-leadership-architecture-and-engineering-org-7871807/how-gitlab-built-a-single-codebase-for-one-million-ci-pipelines.md
Podcast: [The CTO Podcast with Fexingo: Technical Leadership, Architecture, and Engineering Org](https://stenobird.com/podcast/the-cto-podcast-with-fexingo-technical-leadership-architecture-and-engineering-org-7871807)
Published: 2026-06-25T19:41:58+00:00
Episode link: https://audio.fexingo.com/business/the-cto-podcast/episode-0073.mp3
Audio file: https://audio.fexingo.com/business/the-cto-podcast/episode-0073.mp3
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Duration seconds: 458

## Resource

In this episode, Lucas and Luna dive into the specific technical decisions GitLab made to scale its CI/CD platform from tens of thousands of pipelines to over one million per day. They focus on the choice of a monolithic application architecture, the use of PostgreSQL partitioning and Redis Cluster, and the trade-offs around job scheduling and queue management. The discussion highlights how GitLab avoided microservice complexity early on and instead optimized a single codebase to handle massive parallel workloads. Listeners will learn about the concept of 'fleet-wide coordination' and how GitLab's engineering team used feature flags and gradual rollout to maintain reliability during rapid growth. This is a concrete case study in scaling developer tools without rewriting everything. #GitLab #CICD #PipelineScaling #MonolithArchitecture #PostgreSQL #RedisCluster #JobScheduling #FeatureFlags #DeveloperTools #ContinuousIntegration #ContinuousDeployment #EngineeringCulture #TechnicalLeadership #BusinessAndTechnology #DevOps #Scale #FexingoBusiness #BusinessPodcast Keep every episode free: buymeacoffee.com/fexingo

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## Transcript

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