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Discover how to approach CI/CD with an SRE mindset. Learn what SLOs, SLIs & error budgets are, and how to define them for your own build & deploy processes. Rebuild trust with your system’s stakeholders, and reclaim control over slow & unreliable build and deploy processes. To watch with closed captions, view the livestream recording: https://www.youtube.com/watch?v=reVGR35H264&t=11910s
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In this video titled "Applying SRE Principles to CI/CD" presented by Mel Kaulfuss at Euruko 2022, the speaker explores how to apply Site Reliability Engineering (SRE) principles to improve Continuous Integration and Continuous Deployment (CI/CD) processes. Kaulfuss shares personal anecdotes from their experiences in software development, highlighting common CI/CD challenges such as flaky tests, slow builds, and reliability issues, which often hinder developers' productivity. ### Key Points Discussed: - **Introduction to CI/CD and SRE**: - CI/CD allows for automated building and testing of code, enabling teams to ship code frequently and reliably. - SRE, established at Google in 2003, focuses on improving operational practices and the reliability of systems. - **Challenges in CI/CD**: - Kaulfuss details a scenario where the CI/CD process can fail due to flaky tests and builds that take excessive time, leading to frustration among developers. - Shares statistical insights about the time developers spend retrying failed builds, emphasizing the need for improvement in CI/CD workflows. - **The Role of SRE Principles**: - Identifies the significance of understanding **Service Level Indicators (SLIs)**, **Service Level Objectives (SLOs)**, and **Error Budgets** in establishing a reliable CI/CD pipeline. - SLOs define acceptable reliability levels, while SLIs serve as metrics to gauge the success of SLOs, with error budgets dictating acceptable failure thresholds. - **Measurement and Observability**: - Advocates for the importance of measurement to establish a baseline and have informed discussions with stakeholders. - Encourages teams to define what "well" looks like in their CI/CD processes to drive improvements. - **Practical Implementation**: - Discusses customizing SLOs and SLIs based on specific needs, like ensuring builds start within a reasonable time or maintaining test suite reliability percentages. - Suggests utilizing tools like Datadog and Honeycomb for gathering observability metrics and performance data. - **Continuous Improvement**: - Emphasizes the necessity of adjusting CI/CD practices based on collected data, encouraging a proactive rather than reactive approach. - Encourages collaboration among teams to diagnose and resolve issues like flaky tests effectively. ### Conclusions and Takeaways: - Applying SRE principles can significantly improve CI/CD processes and rebuild trust among stakeholders. - Automation, measurement, and robust observability are critical in refining deployment practices and enhancing developer experience. - Engaging all stakeholders in defining reliability metrics fosters better alignment and shared understanding of system performance expectations. The session concludes with an invitation for questions from the audience, highlighting the interactive nature of the discussion and the ongoing conversation about improving CI/CD practices.
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