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<div style="display: none; max-height: 0px; overflow: hidden;">Grafana Labs capped 2025 with Grafana 12, major open source milestones, AI-powered Grafana Assistant, and expanded Grafana Cloud capabilities </div>
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<h1><strong>TLDR DevOps <span id="date">2025-12-22</span></strong></h1>
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<strong>This AI tool writes, runs, and maintains E2E tests at Notion, Webflow, and Quora (Sponsor)</strong>
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How much faster could you ship if you didn't have to babysit brittle Playwright tests? With AI, there's no excuse for testing bottlenecks - and the most forward-thinking teams have found a better way.<p></p><p><a href="https://tracking.tldrnewsletter.com/CL0/https:%2F%2Fmomentic.ai%2F%3Futm_source=tldr%26utm_medium=newsletter%26utm_campaign=tldr12222025/1/0100019b45fe7e49-85c6e427-ace5-4130-b8fe-d9bbf37083bf-000000/NVBvAT-pejnQp2fbWq9cWktXVWWkJNma9vc4_KKZaxk=436" rel="noopener noreferrer nofollow" target="_blank"><span>Momentic's AI</span></a> lets you <strong>prompt in plain English</strong> — and it <strong>writes, runs, and maintains</strong> your entire <strong>E2E test suite</strong>. In Momentic:</p>
<p>🤕 <a href="https://tracking.tldrnewsletter.com/CL0/https:%2F%2Fmomentic.ai%2F%3Futm_source=tldr%26utm_medium=newsletter%26utm_campaign=tldr12222025/2/0100019b45fe7e49-85c6e427-ace5-4130-b8fe-d9bbf37083bf-000000/6xD_JGf4CKUndRRXGV6hH8-exB-c1lBk_CY6p_59W8g=436" rel="noopener noreferrer nofollow" target="_blank"><span>Auto-healing locators</span></a> find elements by descriptions, not XPath.</p>
<p>🌤️ Cover critical user flows up to 75% faster with plain English tests.</p>
<p>💨 Cut defect escape rates by an average of 89%.</p>
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<strong>Grafana Labs: Top 10 moments of 2025 (10 minute read)</strong>
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Grafana Labs capped 2025 with Grafana 12, major open source milestones, AI-powered Grafana Assistant, Adaptive Telemetry, and expanded Grafana Cloud capabilities, alongside strong community growth, global expansion into Japan, industry recognition, and record revenue and customer adoption.
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<strong>Shifting left at enterprise scale: how we manage Cloudflare with Infrastructure as Code (7 minute read)</strong>
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Cloudflare transitioned its internal operations to an Infrastructure as Code (IaC) and "shift left" security model, managing hundreds of production accounts with Terraform and a custom CI/CD pipeline. This approach uses the Open Policy Agent (OPA) framework and Rego to define approximately 50 security policies, ensuring automated compliance checks and peer reviews before deployment to minimize human error.
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Python 3.15 adds a unified profiling module (including the new Tachyon sampling profiler), makes UTF-8 the default encoding, improves error messages, and significantly upgrades the JIT. It also includes many stdlib/C-API tweaks plus a wave of removals and deprecations for upcoming releases.
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<strong>Optimizing Kyverno CLI performance: My LFX mentorship journey (5 minute read)</strong>
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Exploring Kyverno through the LFX mentorship enabled significant open source contributions, including optimizing the CLI to reduce policy application time on 3,000+ resources from 15 minutes to 1–2 seconds using concurrent loading, namespace caching, and deferred RestMapper discovery.
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<strong>DrP: Meta's Root Cause Analysis Platform at Scale (3 minute read)</strong>
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Meta designed DrP, a root cause analysis (RCA) platform, to programmatically automate incident investigations, significantly reducing mean time to resolve (MTTR) by 20-80%. The platform is currently utilized by over 300 teams at Meta, running 50,000 analyses daily. It is slated to evolve into an AI-native system to advance the company's AI4Ops vision.
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<strong>Logging sucks (12 minute read)</strong>
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Traditional logs are noisy, low-context, and optimized for writing, not for answering real debugging questions in distributed systems. The fix is wide events (canonical log lines): emit one high-cardinality, high-dimensional, context-rich event per request (with tail sampling). This turns debugging from grep-based archaeology into fast, analytical queries.
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<strong>Skeptics welcome: Setting the gold standard of AI SRE (Sponsor)</strong>
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Think AI SRE = hype? Engineering teams at Coinbase, DoorDash, MSCI, and Zscaler are seeing 70% faster MTTR, 30% fewer engineers pulled in per incident, and thousands of saved engineering hours using Resolve AI. Get the <a href="https://tracking.tldrnewsletter.com/CL0/https:%2F%2Fresolve.ai%2Fresources%2Febook%2Fai-sre-buyers-guide%3Futm_source=tldr-devops-2%26utm_medium=3p-newsletter-dec-18%26utm_id=ai-sre/2/0100019b45fe7e49-85c6e427-ace5-4130-b8fe-d9bbf37083bf-000000/XIhNCc6tpORMyLKFI6GEshdRJZm2NTwrTyF2r7U88mk=436" rel="noopener noreferrer nofollow" target="_blank"><span>free AI SRE buyers guide</span></a> to set your benchmarks or join the <a href="https://tracking.tldrnewsletter.com/CL0/https:%2F%2Fluma.com%2Fagu9mak2%3Futm_source=tldr-devops-2%26utm_medium=3p-newsletter-dec-18%26utm_id=coinbase-online/1/0100019b45fe7e49-85c6e427-ace5-4130-b8fe-d9bbf37083bf-000000/IGYPOOSkTySjvgvuRHmKMSscxf6RtSmxEHohaLHr_LM=436" rel="noopener noreferrer nofollow" target="_blank"><span>online session with a Staff Engineer (and ex-skeptic) from Coinbase</span></a> on January 8.
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<strong>Beowulf AI Cluster (GitHub Repo)</strong>
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Beowulf AI Cluster was developed to deploy AI clusters using Ansible across diverse computers. It provides a flexible framework for testing distributed AI clustering tools and running various benchmarks.
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<strong>Exo (GitHub Repo)</strong>
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<strong>Yelp Publishes Blueprint for Managing S3 Server-Access Logs at Massive Scale (7 minute read)</strong>
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Yelp built a scalable, cost-efficient pipeline for S3 server-access logs by compacting raw logs into Parquet files, reducing storage by 85% and object counts by 99.99%, while enabling efficient querying for debugging, cost analysis, and compliance.
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GitHub's Continuous Efficiency combines AI-driven automation and green software practices to make codebases self-optimizing for performance, efficiency, and sustainability. Using agentic workflows, developers can author natural-language rules that AI agents apply to improve code quality, enforce standards, and iteratively enhance performance across heterogeneous repositories.
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<strong>Planview Hub Bytes: 15-Minute Webinars on Jira, ServiceNow, and Custom Integrations (Sponsor)</strong>
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Watch Planview's solution architects walk through the most requested integrations — with live Q&A. No hour-long time sink required. <a class="underline underline underline-offset-2 decoration-1 decoration-current/40 hover:decoration-current focus:decoration-current" href="https://tracking.tldrnewsletter.com/CL0/https:%2F%2Fwww.planview.com%2Flp%2Fhub-micro-webinars%2F/1/0100019b45fe7e49-85c6e427-ace5-4130-b8fe-d9bbf37083bf-000000/9Ppxdj4YvaYQES5xvGGR1ZSxbGbaCXt7Z2nBpK29i1A=436" rel="noopener noreferrer nofollow" target="_blank"><span>Register now</span></a>
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Let's Encrypt has become the world's largest certificate authority in a decade.
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<strong>What do people love about Rust? (14 minute read)</strong>
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Rust is loved because its combination of reliability, performance, and strong tooling gives developers confidence to tackle problems across the entire stack.
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