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The Gotchas of OTEL collector processors for effective observability in K8s

Sanket Rajgiri

SRE @One2N

Spandan Ghosh

Content @One2N

Struggling to make sense of OpenTelemetry Collector processors for real-world projects? This blog breaks down what each OTEL processor actually does, where it matters, and shares real lessons from messy SRE problems like taming noisy data, surviving crashes, and staying under cost limits in Kubernetes.

January 26, 2026 | 6 min read

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How Queueing Theory Makes Systems Reliable

One2N

Team

Learn how SREs use queueing theory to explain why 70 percent utilisation feels calm, 90 percent feels cursed, and how the same math helps you choose headroom, tame retries, and protect your error budget before incidents hit.

December 17, 2025 | 2 min read

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How to read SRE graphs without lying to yourself

One2N

Team

Are your SRE charts messing with your head? We’ll show you step by step how to actually make sense of those dashboards: percentiles, averages, heatmaps, and all, so you spot real issues fast. No jargon, just practical advice from daily SRE work.

December 10, 2025 | 3 min read

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Error Budget Calculation: Downtime Minutes for every SLO

One2N

Team

Turn your SLO into something you can argue about in a meeting: this guide shows how to convert 99.9% into 43 real minutes of downtime, read burn rate, push back on “five nines,” and decide when to ship or hit pause.

December 3, 2025 | 3 min read

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Percentiles in SRE: Why averages lie about latency

One2N

Team

See why SREs stop trusting average latency and switch to percentiles, with clear examples of p50, p95, p99, how they expose tail pain for real users, and how to pick the right percentiles for your system.

November 26, 2025 | 3 min read

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Comparing Latency vs Throughput: why high utilisation hurts reliability

One2N

Team

This guide explains how latency, throughput, and utilisation really interact, why running at 90 percent capacity quietly wrecks your SLOs, and how to pick safe headroom so your system can survive real-world traffic spikes without falling over.

November 19, 2025 | 6 min read

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Deploying a scalable NATS cluster part 2: hands-on demo

Barun Debnath

SRE

Learn how to deploy a scalable, production-ready NATS cluster using Docker, complete with observability via Prometheus and Grafana. This hands-on demo covers cluster design, stream replication, JetStream, DLQ, and load testing; helping you build robust messaging infrastructure for cloud native applications at scale.

November 12, 2025 | 7 min read

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SRE math every engineer should know: a practical guide

Srivatsa RV

SRE @One2N

Curious how top engineers keep systems reliable? This guide breaks down the math behind Site Reliability Engineering into simple, real-life examples whether it’s understanding error budgets, decoding percentiles, or making sense of dashboards. Perfect if you want to stop firefighting and start making data-driven, confident decisions on call.

November 5, 2025 | 8 min read

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From Aircraft to Cloud: my experience completing the SRE Bootcamp

Pankaj Goriya

SRE @One2N

From fixing aircraft to building cloud systems, this is my journey through One2N’s hands-on SRE Bootcamp. I share how real-world challenges and team culture helped me grow as an engineer, plus some honest advice for anyone thinking about site reliability engineering.

October 29, 2025 | 4 min read

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DORA Metrics: Useful or Fluff

Jaideep Khandelwal

CTO @One2N

In this post, we shed light on why following DORA metrics without context might cause more harm than good. We also show how leaders can use a practical, strategic approach to connect DORA metrics to meaningful business outcomes.

September 3, 2025 | 14 min read

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A pragmatic guide to get started with OpenTelemetry

Spandan Ghosh

Content @One2N

A guide explaining OTEL, monitoring vs. observability, telemetry’s pillars, OTEL instrumentation, and seamless backend migration. Includes practical migration strategies and trade-offs for SREs adopting OTEL.

August 20, 2025 | 5 min read

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DARE to question your alerts?

Saurabh Hirani

Principal SRE @One2N

Alert fatigue is real and it's hurting your on-call teams. This post breaks down how to make alerting systems smarter through regular alert analysis. Learn how to turn noisy alerts into actionable insights that drive real resilience.

June 25, 2025 | 3 min read

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Deploying a scalable NATS cluster part 1: core architecture and considerations

Barun Debnath

SRE

In this blog, we provide a detailed overview of the NATS architecture, key cluster design considerations, and best practices for deploying a scalable and reliable NATS messaging system. We cover topics like high availability, fault tolerance, message durability, and the infrastructure requirements.

June 4, 2025 | 5 min read

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Transforming alerting with GitOps - a journey in automating Elasticsearch alerts

Srivatsa RV

SRE @One2N

This blog tells you how to approach alerting from first principles while on the ELK Stack. We cover how to capture the right signals that a NOC team looks at, structure them as alert definitions and operationalize them relying on GitOps. This ensures teams can act on alerts confidently.

April 29, 2025 | 9 min read

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GitHub runners fundamentals and self-hosted runner setup

Rajesh Jangid

SRE

This post is an introduction to Github runners, different ways in which they can be deployed, and a comparison between managed and self hosted runners.

April 10, 2025 | 5 min read

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Best practices for upgrading EKS clusters

Aashi Rathore

SRE @One2N

Upgrade your Amazon EKS clusters with confidence. Learn best practices to avoid common mistakes, prepare your cluster, and execute a smooth upgrade process for improved performance, security, and cost savings.

March 25, 2025 | 5 min read

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How to port-forward from EC2 instances without the need for opening any SSH ports or creating Bastion hosts

Harsh Mishra

SRE @One2N

Learn how to port-forward from EC2 instances in private subnets without opening SSH ports or setting up bastion hosts. This AWS SSM Session Manager guide provides a secure, cost-effective, and simple solution for EC2 access and port forwarding.

March 10, 2025 | 5 min read

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Gotchas to avoid when using AWS spot instances in production

Aashi Rathore

SRE @One2N

In this post, we’ll explore the fundamentals of spot instances, the risks associated with their use in production, and key strategies to ensure seamless operations.

February 24, 2025 | 4 min read

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Accessing private EC2 Instances without keys or passwords

Adarsh Raj

SRE

We explore how to securely access private EC2 instances without SSH keys or passwords using AWS Systems Manager Session Manager, especially in large-scale environments.

December 3, 2024 | 7 min read

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Using UTM and Vagrant to spin up dev environments on Apple Silicon Macs

Srivatsa RV

SRE @One2N

Learn how to set up a local development environment on M-series Macs using Vagrant and UTM, overcoming VirtualBox limitations and allowing for a seamless virtualization and containerization experience.

December 2, 2024 | 5 min read

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Karpenter vs Cluster Autoscaler: a comprehensive guide to Kubernetes Node Scaling

Rahul H Bhatia

SRE

Learn what the key differences are between Karpenter and Cluster Autoscaler for Kubernetes node scaling, how each tool handles dynamic workloads, node provisioning, and cost optimization, to choose the best solution for your cloud-native environment.

November 8, 2024 | 7 min read

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Exploring Retrieval Augmented Generation (RAG): enhancing LLMs with external knowledge

Harsh Mishra

SRE @One2N

Explore how Retrieval Augmented Generation (RAG) can enhance Large Language Models (LLMs) like ChatGPT by leveraging external knowledge sources. Understand the fundamentals of LLMs, the limitations of standalone models, and the key components of a RAG-based application.

October 8, 2024 | 9 min read

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Setting up CloudWatch alerts for EKS clusters: insights and solutions

Mihir Bhagwat

SRE @One2N

Explore the process of setting up CloudWatch alerts for specific scenarios while managing a production AWS EKS instance, highlighting key insights and practical solutions.

August 30, 2024 | 6 min read

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How we used Fly.io to improve a Pipecat-AI chatbot

Ajinkya Wadekar

SRE @One2N

Learn how we improved our AI chatbot application using innovative solutions. Find out about the challenges we faced and the strategies we used to boost performance and scalability.

August 19, 2024 | 5 min read

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Understanding MLOps from a software engineers' perspective

Harsh Mishra

SRE @One2N

Spandan Ghosh

Content @One2N

Chinmay Naik

CEO @One2N

Jaideep Khandelwal

CTO @One2N

A comprehensive overview of MLOps for software engineers, covering key concepts, challenges, and best practices. Learn about knowledge silos, the MLOps lifecycle, automation, versioning, experiment tracking, and more.

July 30, 2024 | 7 min read

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A practical guide for database schema migrations

Spandan Ghosh

Content @One2N

Database schema changes are inevitable in software development. This guide teaches you how to automate schema migrations, reducing deployment headaches and increasing agility.

April 25, 2024 | 5 min read

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Achieving CI/CD with previews for your static website hosted on S3

Drasti Kaurav

SRE @One2N

Seamlessly deploy your static website hosted on AWS S3 with preview environments. Learn how to set up an automated build and deployment process, handle CloudFront cache invalidation, and ensure a smooth website rollout.

February 24, 2024 | 4 min read