Table Of Contents

This blog is a knowledge base designed to help engineers upskills and explore different aspects of SRE and DevOps. Start here..

This blog is a knowledge base designed to help engineers upskill and explore different aspects of SRE and DevOps. The table of contents is structured for easy navigation.

I will continue adding to this page as I write, organizing the content along the way. Enjoy reading!

Note: These blogs are a compilation of writings from various platforms I've contributed to in the past, not just this one. I want to organize them even better in a single domain, but for now this should be fine.

1. Soft skills

   1. Code reviews

      1. Demand proper code reviews: Your career depends on it

      2. Code commenting

      3. PR Etiquette

   2. Building a high functioning team

2. Engineering concepts

   1. PoC is not Production Ready

   2. Law of Demeter

   3. 5 important non-technical skills

   4. Is your application “ready for traffic”?

   5. Building resilient software systems: 20 strategies

   6. Refactoring functionally correct but flawed code

3. Operating Systems

   1. Linux

      1. Processes

         1. How does kernel decide which process to kill when system goes OOM ?

         2. Process spawning

      2. Static and Shared libraries

      3. Locking

      4. What happens when you type `ls -la` in terminal ?

      5. What to do when you can’t chmod chmod ?

      6. Find all sleeping process in Linux

      7. Linux signal: Kill -15 vs kill -9

      8. SetUID, SetGID, Stickybit

      9. Why did systemd outperformed init

      10. Linux file system management

4. Networking & Protocols

   1. DNS

      1. DNS Primer

      2. Dangling DNS

      3. What happens when you type “google.com” in your browser

      4. CNAME chaining

      5. Dissecting dig command

   2. Proxy

      1. Reverse Proxy

         1. Learn reverse proxy by creating one

5. Cloud

   1. AWS

      1. RDS

         1. Choosing right RDS instance size for AWS

         2. Diagnosing High CPU Usage in RDS

         3. 20 Different ways to scale a relational database

      2. EC2

         1. Implementing FTPS/TLS in AWS EC2 instance

   2. Istio

      1. Preserving source IP address in L4 Loadbalancer using proxy-protocol

6. On-Prem Infrastructure

   1. Pfsense

      1. Unable to check for updates

7. Distributed Systems

   1. CAP & PACELC Theorem

8. DevOps / SRE

   1. Observability

      1. Monitoring and it’s importance

   2. Incident management

      1. Incident management

      2. Lessons learned from Crowdstrike outage

      3. Power of Pre-Mortems

      4. Stay on top of your incidents

   3. SLO/SLI/SLA

   4. SRE vs DevOps

   5. Production Readiness Review

   6. Beyond tools: understanding “why” and "how” of SRE practices

   7. Being a good SRE

   8. BCP & DR ( Business Continuity Protection and Disaster Recovery )

      1. Backup and Restoration Strategies

9. Security

   1. Authentication & Authorization

      1. Understanding Digital identity, Encryption and OAuth2.0 vs OIDC

      2. Implementing Google OAuth2.0 using Auth0 & Go

   2. Unique Identifiers

      1. UUID vs NanoID

      2. Why i do not like UUID

      3. Generating 10 Million Unique IDs: Which Is Faster, UUID, ULID, or NanoID?

   3. Secret management

      1. Configuration variables vs secret variable - Stop treating them as one

      2. .env file and why you should not load secrets from them ?

   4. Randomness

   5. Base56 and how it is different from base58 and base62

10. Web

    1. REST API

       1. Essential guide to designing an effective REST API

11. Tools & Technologies

    1. Git

       1. Useful git commands

       2. git LFS

       3. Hitchhicker’s guide to cherry picking in git

    2. Docker

       1. Docker Networking

       2. How to version docker image correctly ?

       3. Multi-stage docker building for smaller and faster Go docker image

       4. Docker Scout

       5. Optimally dockerizing NextJS application - Part 1

       6. Optimally dockerizing NextJS application - Part 2

       7. Testcontainers

    3. Kubernetes

       1. BYO-kubernetes cluster

       2. Upgrading statefulset

       3. Why total memory of my worker node is always above 90% ?

       4. Kubernetes certficate based authentication stragery for accessing your cluster.

    4. Prometheus

       1. Scraping application specific metrics using prometheus which is protected by API key or basic auth.

    5. Taskfile

12. Programming & Scripting

    1. Testing

       1. Unit Testing

    2. Shell scripting

       1. Defensive programming to crease a robust-ish shell script

    3. Go

       1. Go - Day 1

       2. Appending to slice ( list ) is not same in Go as other language. Here is why

       3. Anonymous structs in Go

13. Database & Storage

    1. MongoDB

       1. Multi-collection updates and ACID compliance using context and transactions

    2. DB Storage and B-Tree