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Retries Are a Denial-of-Wallet Attack Waiting to Happen (Mon, 09 Mar 2026)
The invoice arrived on a Tuesday. Forty-seven thousand dollars for Lambda invocations across a weekend nobody was working. The team lead stared at CloudWatch metrics — normal traffic Friday afternoon, then a cliff of timeouts starting around 21:00. What followed wasn't an attack. No credential leak, no bot swarm. Just the application eating itself alive through retries, each failed request spawning three more, those spawning nine, the exponential curve steepening until AWS started provisioning containers faster than anyone could hit the "stop" button. This is what we mean by Denial-of-Wallet. Not malicious. Self-inflicted.
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The Inner Loop Is Eating The Outer Loop (Mon, 09 Mar 2026)
For as long as most of us have been building software, there has been a clean split in the development lifecycle: the inner loop and the outer loop. The inner loop is where a developer lives day to day. Write code, run it locally, check if it works, iterate. It is fast, tight, and personal. The outer loop is everything after you push. Continuous integration pipelines, integration tests, staging deployments, and code review. It is comprehensive but slow, and for good reason. Running your entire test suite against every keystroke would be insane. So we optimized: fast feedback locally, thorough validation later.
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Square, SumUp, Shopify: Data Streaming for Real-Time Point-of-Sale (POS) (Mon, 09 Mar 2026)
Point-of-Sale (POS) systems are no longer just cash registers. They are becoming real-time, connected platforms that handle payments, manage inventory, personalize customer experiences, and feed business intelligence. Small and medium-sized merchants can now access capabilities once reserved for enterprise retailers. Mobile payment platforms like Square, SumUp, and Shopify make it easy to sell anywhere and integrate sales channels seamlessly. At the same time, data streaming technologies such as Apache Kafka and Apache Flink are transforming retail operations. They enable instant insights and automated actions across every store, website, and supply chain partner.
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Best Practices to Make Your Data AI-Ready (Mon, 09 Mar 2026)
The key problem organizations encounter when implementing AI is not the technology itself, but the data needed to feed AI models. Many companies have plenty of data, but when it comes to quality, it often turns out to be messy, inconsistent, or biased. If you want your AI investments to deliver real value, you must make your data AI‑ready first. Below, I share some best practices for building an AI-ready culture and establishing a data management framework that ensures high-quality data pipelines for AI initiatives.
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DevOps Cafe Podcast

DevOps Cafe Ep 79 - Guests: Joseph Jacks and Ben Kehoe (Mon, 13 Aug 2018)
Triggered by Google Next 2018, John and Damon chat with Joseph Jacks (stealth startup) and Ben Kehoe (iRobot) about their public disagreements — and agreements — about Kubernetes and Serverless. 
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DevOps Cafe Ep 78 - Guest: J. Paul Reed (Mon, 23 Jul 2018)
John and Damon chat with J.Paul Reed (Release Engineering Approaches) about the field of Systems Safety and Human Factors that studies why accidents happen and how to minimize the occurrence and impact. Show notes at http://devopscafe.org
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DevOps Cafe Ep. 77 - Damon interviews John (Wed, 20 Jun 2018)
A new season of DevOps Cafe is here. The topic of this episode is "DevSecOps." Damon interviews John about what this term means, why it matters now, and the overall state of security.  Show notes at http://devopscafe.org
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