Cracking SRE

Built from my experience working as SRE at a US startup, PhonePe, KayHosting, this guide covers the concepts, questions, and practical thinking you actually need to crack SRE interviews.

Yoshik Karnawat

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May 1, 2026

Weekly Digest

Digest

#28 Uptime Sync: The Security Gaps, Database Regressions, and Failovers That Hurt in Production

Jul 26, 2026

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2 min read

#28 Uptime Sync: The Security Gaps, Database Regressions, and Failovers That Hurt in Production

From compromised release branches and silent PostgreSQL defaults to chaos-tested Kubernetes operators and high-availability systems that still brown out

Yoshik Karnawat

Digest

#27 Uptime Sync: DNS Failures, Million-Sandbox Scale, and the Kubernetes Risks

Jul 19, 2026

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2 min read

#27 Uptime Sync: DNS Failures, Million-Sandbox Scale, and the Kubernetes Risks

Production failures, infrastructure at extreme scale, and the security gaps that can turn a small misconfiguration into a cluster takeover

Yoshik Karnawat

Digest

#26 Uptime Sync: The Rewrite Trap, PostgreSQL at Scale, and the Costs That Show Up After Launch

Jul 12, 2026

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2 min read

#26 Uptime Sync: The Rewrite Trap, PostgreSQL at Scale, and the Costs That Show Up After Launch

Why working code gets replaced too early, databases become harder to operate than expected, and real infrastructure costs begin after the demo

Yoshik Karnawat

Digest

#25 Uptime Sync: Homelabs That Maintain Themselves, PostgreSQL Superpowers, and the AI Bill Nobody Expected

Jul 6, 2026

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2 min read

#25 Uptime Sync: Homelabs That Maintain Themselves, PostgreSQL Superpowers, and the AI Bill Nobody Expected

Self-managing infra, transaction-powered workflows, and the practical lessons hiding behind retry storms, pager fatigue, and simpler stacks

Yoshik Karnawat

Digest

#24 Uptime Sync: Terminal Workflows, PostgreSQL Enough, and the Tools That Still Win

Jun 26, 2026

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1 min read

#24 Uptime Sync: Terminal Workflows, PostgreSQL Enough, and the Tools That Still Win

Practical infra lessons, zero-downtime migrations, and simple systems that keep outperforming fashionable stacks

Yoshik Karnawat

Digest

#23 Uptime Sync: ClickHouse Bottlenecks, Rust Migrations, and the AI Hype Check

Jun 12, 2026

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2 min read

#23 Uptime Sync: ClickHouse Bottlenecks, Rust Migrations, and the AI Hype Check

Hidden pipeline slowdowns, kube-native platform shifts, and the engineering lessons freshers need before the hype overwhelms them

The System That Scaled to Billions on 550 Servers

Yoshik Karnawat

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Become a Better Infrastructure Engineer, Every Week

I’ve worked on infrastructure at PhonePe, KayHosting, and now at a US startup. Every week, I share practical engineering lessons and curate the best articles, tutorials, news, and github projects to help you improve and stay current.

Cracking SRE

Weekly Digest

#28 Uptime Sync: The Security Gaps, Database Regressions, and Failovers That Hurt in Production

#27 Uptime Sync: DNS Failures, Million-Sandbox Scale, and the Kubernetes Risks

#26 Uptime Sync: The Rewrite Trap, PostgreSQL at Scale, and the Costs That Show Up After Launch

#25 Uptime Sync: Homelabs That Maintain Themselves, PostgreSQL Superpowers, and the AI Bill Nobody Expected

#24 Uptime Sync: Terminal Workflows, PostgreSQL Enough, and the Tools That Still Win

#23 Uptime Sync: ClickHouse Bottlenecks, Rust Migrations, and the AI Hype Check

Deep Dives

How TLS Works - Deep Dive

AWS IAM Simply Explained

I Don’t Chase Every New Tool Anymore. I Test, Compare, and Move On

21 Lessons I Learned in My First 3 Years as an SRE

DevOps vs MLOps vs AIOps

WhatsApp Architecture

Become a Better Infrastructure Engineer, Every Week

I’ve worked on infrastructure at PhonePe, KayHosting, and now at a US startup. Every week, I share practical engineering lessons and curate the best articles, tutorials, news, and github projects to help you improve and stay current.

The Uptime Engineer