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Digest

Apr 4, 2026

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4 min read

#13 Uptime Sync: Axios Hack, AWS Multi-AZ Assumptions Broken by War, Wix Migrated 1000 MySQL Servers

Iran conflict outage, Graviton zero-downtime migration, Redpanda Cloud architecture, and the AWS logs you miss during incidents

Yoshik Karnawat

Apr 1, 2026

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6 min read

Understanding Kubernetes Scheduler

Filter, Score, Bind: and why the first phase determines everything that follows

Yoshik Karnawat

Digest

Mar 28, 2026

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4 min read

#12 Uptime Sync: DoorDash's Service Mesh at 80M RPS, GitLab Deployed 12 Times Daily, and AI Agent Misconceptions

IP overlap routing, GitHub Enterprise search HA, storage design trade-offs, and S3 as a database substrate

Yoshik Karnawat

System Design

Mar 23, 2026

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6 min read

A Crash Course On High Availability

Your App Being "Up" and Your App Being "Available" Are Not the Same Thing

Yoshik Karnawat

DevOps

Mar 10, 2026

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9 min read

Your Docker Image Isn't Fat Because of Your Code

The average production Node.js image sits at 900MB. It should be under 150MB. Here's the architectural reason why.

Yoshik Karnawat

Digest

Mar 7, 2026

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5 min read

#11 Uptime Sync: GPT-5.4 Launch, Yelp's AI Assistant, and GPU Health at 20K Scale

Multi-agent architectures, production AI agent skepticism, infrastructure audit automation, and classical ML inference breakthroughs

Yoshik Karnawat

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Master the Infrastructure Fundamentals That Matter. Learn How Linux, Networks, and Cloud Actually Work

Weekly one deep-dive into Linux, networking, cloud, and production outages. 3-7 minute reads that help you debug faster and understand systems deeper.