DevOps & SRE notes – Telegram
DevOps & SRE notes
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Helpfull articles and tools for DevOps&SRE

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The piece argues that traces beat metrics when you need to pinpoint latency spikes and hidden dependencies. It walks through three concrete debugging scenarios that show why span data can surface root causes in seconds.
https://jaywhy13.hashnode.dev/3-reasons-traces-better-than-metrics-for-debugging-your-application
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In Slack’s detailed write-up, engineers share how the Unified Grid architecture split a monolithic workspace into isolated “cells” to serve enterprises with hundreds of thousands of users. The narrative dives into sharding strategy, migration challenges, and the performance wins that followed.
https://slack.engineering/unified-grid-how-we-re-architected-slack-for-our-largest-customers/
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The essay walks through a hands-on pipeline that signs Kubernetes container images with Cosign, enforces them with Kyverno, and stores keys in HashiCorp Vault—all wired together in GitLab CI. You’ll leave with a reproducible template for securing your software supply chain.
https://angapov.medium.com/kubernetes-container-images-signing-using-cosign-kyverno-hashicorp-vault-and-gitlab-ci-c4e2041d1310
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Understand the intricacies of container communication within a Kubernetes pod, exploring the various mechanisms and considerations for enabling effective interaction between containers in a shared environment. This article provides insights into Kubernetes networking concepts.
https://medium.com/@sumuduliyan/container-communication-inside-a-kubernetes-pod-a5e84d607ef2
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Explore the challenges and solutions for managing stateful applications in Kubernetes using Operators, gaining insights into how to effectively handle persistent data and complex deployments. This blog post delves into the complexities of stateful workloads in Kubernetes.
https://blog.palark.com/stateful-in-kubernetes-and-operators/
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Forwarded from Python notes
This piece provides a guide to building a Retrieval-Augmented Generation (RAG) system using Anthropic's Claude, PostgreSQL, and Python on AWS. The tutorial walks through setting up the necessary PostgreSQL extensions and using Amazon Bedrock to create an application that generates more accurate AI responses.

https://www.tigerdata.com/blog/building-a-rag-system-with-claude-postgresql-python-on-aws
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Delve into the innovative approach of building a serverless ACID-compliant database, understanding the techniques and trade-offs involved in achieving transactional consistency in a serverless environment. This article explores a novel database architecture.
https://notes.eatonphil.com/2024-09-29-build-a-serverless-acid-database-with-this-one-neat-trick.html
Explore the strategies and techniques Cloudflare employs to improve the resilience of its platform, ensuring high availability and reliability for its global network. This blog post provides insights into building a resilient infrastructure.
https://blog.cloudflare.com/nl-nl/improving-platform-resilience-at-cloudflare/
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KubeSnapIt – A PowerShell tool for managing Kubernetes snapshots, restorations, and comparisons with ease. Capture snapshots of your Kubernetes resources, restore them when needed, and compare snapshots or live cluster states to track changes over time.

https://github.com/KubeDeckio/KubeSnapIt
Examine the concept of implicit Service Level Objectives (SLOs) and the potential risks they pose to system reliability and performance. This article highlights the importance of defining explicit SLOs for better service management.
https://blog.relyabilit.ie/implicit-slos-and-their-dangers/
This blogpost delves into the critical distinctions between a root process running on a host and one operating within a container. Understanding this difference is a fundamental aspect of comprehending and strengthening container security.

https://www.armosec.io/blog/root-process-vs-containerized-root-process/