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Dive into a collection of past posts and rediscover timeless content.

Digest

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

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
Yoshik Karnawat
Understanding Kubernetes Scheduler

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
Yoshik Karnawat

Digest

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

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
Yoshik Karnawat

System Design

A Crash Course On High Availability

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
Yoshik Karnawat

DevOps

Your Docker Image Isn't Fat Because of Your Code

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
Yoshik Karnawat

Digest

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

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
Yoshik Karnawat

Digest

#10 Uptime Sync: Docker Builds in Seconds, Netflix LLM Post-Training, and Uber's Access Control Reimagined

Mar 2, 2026

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5 min read

#10 Uptime Sync: Docker Builds in Seconds, Netflix LLM Post-Training, and Uber's Access Control Reimagined

Build optimization breakthroughs, runtime security hardening, database partition strategies, and production-tested infrastructure tools

Yoshik Karnawat
Yoshik Karnawat

Cloud

The Secret Behind AWS S3

Feb 24, 2026

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7 min read

The Secret Behind AWS S3

The "11 nines" everyone quotes is not an uptime promise

Yoshik Karnawat
Yoshik Karnawat
#9 Uptime Sync: Claude Code Security, Microservices and Databases, and GitOps Lessons Learned

Feb 21, 2026

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4 min read

#9 Uptime Sync: Claude Code Security, Microservices and Databases, and GitOps Lessons Learned

AI coding security, database architecture patterns, promotion frameworks, and self-hosted infrastructure tools worth knowing

Yoshik Karnawat
Yoshik Karnawat
#8 Uptime Sync: GitHub’s Feb 9 Incident, Gemini 3 Deep Think & RDMA

Feb 15, 2026

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4 min read

#8 Uptime Sync: GitHub’s Feb 9 Incident, Gemini 3 Deep Think & RDMA

Platform reliability lessons, new model research, security pitfalls in “vibe coding,” and systems-level performance primitives

Yoshik Karnawat
Yoshik Karnawat
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