You're reading from Automating DevOps with GitLab CI/CD Pipelines

Product typeBook

Published inFeb 2023

PublisherPackt

ISBN-139781803233000

Edition1st Edition

Concepts

DevOps

Authors (3):

Christopher Cowell

Nicholas Lotz

Chris Timberlake

View More author details

Accelerating pipelines with directed acyclic graphs and parent-child architecture

GitLab supports the usage of the directed acyclic graph (DAG) pattern for building CI pipelines. Under normal usage with GitLab, each stage represents a series of jobs that need to be completed. Each stage is comprised of multiple jobs that are executed in parallel. Once a stage completes, then the next stage begins, until the pipeline completes. This is the typical processing loop that GitLab utilizes to complete a CI pipeline.

However, it is possible to create an internal loop of CI jobs that are directed to execute in a specific order that does not loop. This pattern is called a DAG or directed acyclic graph. Directed refers to the ordering of operations, acyclic refers to the fact it only happens once, and graph indicates the ordering of steps.

When leveraged properly, the DAG pattern can dramatically decrease the time it takes a pipeline to complete. This occurs because you are creating processing...

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Automating DevOps with GitLab CI/CD Pipelines

Published in: Feb 2023Publisher: PacktISBN-13: 9781803233000

Authors (3)

Christopher Cowell

Christopher Cowell is a former trainer at GitLab, now building educational content at Instabase. He also worked for two decades as a research and development scientist, consultant, and QA Engineer at companies such as Accenture, Oracle, and Puppet. He thinks the software industry undervalues code quality and thoughtful design, and overvalues delivering mediocre code quickly. Slow down, simplify, and get it right! He holds a Ph.D. in Philosophy from Berkeley and a B.A. in Computer Science from Harvard. He lives in Portland, Oregon.
Read more about Christopher Cowell

Nicholas Lotz

Nicholas Lotz is a technical trainer at GitLab, where he teaches organizations how to use GitLab to build and ship better software. He has previously worked as a systems engineer, trainer, and consultant in the software infrastructure space. He is passionate about open source and its capacity to help teams innovate. Nicholas holds a B.S. in Chemical Engineering from the University of Pittsburgh. He lives in Nashville, Tennessee with his Labrador retriever.
Read more about Nicholas Lotz

Chris Timberlake

Chris Timberlake is a Senior Solutions Architect at GitLab where he works closely with the Product, Services, and Sales teams. Previously, he has worked with Red Hat as a Senior Consultant, where he owned and managed a Digital Marketing firm, and has a background in Security and Law Enforcement. Chris loves technical engineering problems and does whatever possible to have successful customer outcomes. Chris is passionate about open source software, collaborative development, and education. Chris lives in Chattanooga, Tennessee with his family.
Read more about Chris Timberlake

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