Technical Blog

DevOps

14 Apr 2026

Kamal Deployment with Custom SSL for Staging and Production

Vishal Zambre

4 min read

Kamal is a great way to deploy containerized applications to your own servers without maintaining a full Kubernetes setup. In this guide, you will set...

#kamal #docker #deployment +3 more

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ruby

10 Apr 2026

Advanced Query Performance Optimization in Rails

Vishal Zambre

6 min read

Rails makes it easy to ship features quickly, but the same abstractions that save time can hide expensive database work. Once you have moved past...

#ruby #rails #activerecord +3 more

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ruby

12 Feb 2026

RuboCop Useful Tricks for Upgrading and Fixing One by One

Vishal Zambre

5 min read

RuboCop Useful Tricks for Upgrading and Fixing One by One

#ruby #rubocop #linting

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Ruby

29 Jan 2026

Ruby: Different Forms of super With Examples

Vishal Zambre

1 min read

Ruby: Different Forms of +super+

#ruby #inheritance #super +1 more

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ruby

28 Jan 2026

How to Write Thread-Safe Ruby Code

Vishal Zambre

2 min read

Thread safety means your code behaves correctly even when multiple threads run at the same time. In MRI Ruby, the GIL limits true parallel execution...

#ruby #concurrency #thread-safety +2 more

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ruby

26 Jan 2026

What Is the GIL in MRI Ruby?

Vishal Zambre

3 min read

The GIL (Global Interpreter Lock) is a mutex inside MRI Ruby that ensures only one thread executes Ruby bytecode at a time. It does not...

#ruby #mri #concurrency +1 more

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postgresql

25 Jan 2026

PostgreSQL Vacuum for Large Rails Tables

Vishal Zambre

3 min read

PostgreSQL does not overwrite rows in place. Every UPDATE/DELETE creates dead tuples that must be cleaned up. VACUUM is the mechanism that reclaims space, keeps...

#postgresql #rails #vacuum +2 more

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mysql

13 Jan 2026

Migrate Large MySQL Database from Physical to Managed Server with Near-Zero Downtime

Vishal Zambre

20 min read

Step-by-Step Migration Guide

#mysql #database #migration +1 more

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ruby-4.0.0

25 Dec 2025

Ruby 4.0.0 Released - Key Features and Improvements

Vishal Zambre

6 min read

Ruby 4.0.0 was released on December 25, 2025, bringing significant enhancements focused on code isolation, performance optimization, and parallel execution capabilities. This release introduces several...

#ruby #tech

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sql

9 Dec 2025

PostgreSQL JSON Column WHERE Clause: Querying Nested JSON Data

Vishal Zambre

6 min read

PostgreSQL’s JSON support is one of its most powerful features, allowing you to store and query complex nested data structures efficiently. In this post, we’ll...

#postgresql #json #sql +1 more

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ruby

28 Aug 2025

Large Hadron Migrator - Online MySQL Schema Migrations without Downtime

Vishal Zambre

10 min read

Large Hadron Migrator - Online MySQL Schema Migrations without Downtime

#mysql #rails #migrations +2 more

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ruby

28 Aug 2025

Migrating from mysql2 to Trilogy Database Adapter in Rails

Vishal Zambre

20 min read

Migrating from mysql2 to Trilogy Database Adapter in Rails

#ruby #rails #mysql +2 more

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tech

16 Jul 2025

Setting up Google Ads API for Offline Upload with OAuth2 Authentication

Vishal Zambre

8 min read

Setting up Google Ads API for Offline Upload with OAuth2 Authentication

#google-ads #oauth2 #api +2 more

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git

15 Jul 2025

Github CLI to create PR gh Using Commit and Jira reference as Body

Vishal Zambre

6 min read

Creating Pull Requests with Jira References Using GitHub CLI

#git #tech #devops

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git

10 Jul 2025

Release Branch Workflow | Sprint-Driven Branching

Vishal Zambre

8 min read

Release Branch Workflow | Sprint-Driven Branching

#git #gitlab #ruby +2 more

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ruby

9 Jun 2025

Ruby different forms of respond_to? have different behaviors

Vishal Zambre

6 min read

Ruby’s respond_to? method is a powerful tool for checking whether an object can respond to a particular method call. However, many Ruby developers aren’t aware...

#ruby #tech

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rails

2 Jun 2025

Rails Anycable setup with dockerise

Vishal Zambre

18 min read

Setting up AnyCable with Rails using Docker: A Complete Guide

#rails #anycable #docker +1 more

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rails

22 Jan 2025

Deploying Rails Applications to Heroku

Vishal Zambre

2 min read

Deploying Rails Applications to Heroku A Practical Guide for Students

#ruby #heroku #rails +1 more

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rails

22 Jan 2025

Protecting RSpec Mocks from Signature and Return Type Changes

Vishal Zambre

2 min read

Protecting RSpec Mocks

#ruby #rspec #rails

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rails

13 Sep 2024

Ruby on Rails Phusion passenger error

Vishal Zambre

1 min read

Problem

#ruby #nginx #rails +1 more

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tech

30 Jun 2024

Monetization architecture

Vishal Zambre

2 min read

“Monetization architecture” refers to the technical and strategic framework that enables a digital product or service (like a SaaS platform, app, or media site) to...

#payments #architecture

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git

10 Jun 2024

Github pre commit hook to validate commit message and description

Vishal Zambre

1 min read

To set up a Git pre-commit hook to validate the length of commit messages and descriptions, you can create a script that will be executed...

#git #devops

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go

20 Feb 2024

Go Installation and Uninstallation on Mac

Vishal Zambre

1 min read

Installation

#go #tech

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docker

4 Dec 2023

Build Multi Arch Docker Images

Vishal Zambre

2 min read

Build once and use anywhere

#docker #multi-arch #devops

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ruby-3.2.0

10 Feb 2023

Ruby in WebAssembly

Vishal Zambre

1 min read

There is an official Wasm build of Ruby. It supports WASI and a wide array of features.

#ruby #tech

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tech

13 Jan 2023

Caching in GitLab CI/CD

Vishal Zambre

1 min read

If you are using mutliple stages to the CI and each stage needs bundle install, cache bundle and just reuse it.

#gitlab #ci #ruby

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ruby-3.1.2

7 Nov 2022

Confusing behavior of File.dirname

Vishal Zambre

1 min read

If you are using File.dirname to get the directory path and delete and do some other processing on path, then make sure you consider below...

#ruby #tech

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sql

6 Nov 2022

SQL Style Guide and Best Practices

Vishal Zambre

11 min read

Data Team SQL Style Guide and Best Practices

#sql #snowflake

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rails-7.0.4

6 Nov 2022

Expression Indexes and Operator Classes support for PostgreSQL

Vishal Zambre

1 min read

Expression Indexes

#ruby #rails #tech

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elixir

9 Apr 2019

Ecto Custom Validation Elixir Phoenix

Vishal Zambre

1 min read

We often need to validate fields that are passed through a struct in Ecto Changesets. Custom validations are very straightforward to write and can be...

#elixir #tech

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ruby-2.4.0

24 Mar 2017

String supports Unicode case mappings

Vishal Zambre

1 min read

String/Symbol#upcase/downcase/swapcase/capitalize(!) now handle Unicode case mappings instead of only ASCII case mappings

#ruby #tech

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ruby-2.4.0

24 Mar 2017

String#concat, Array#concat and String#prepend Now takes multiple arguments.

Vishal Zambre

1 min read

Now String#concat, Array#concat and String#prepend String#concat # Before 2.4.0

#ruby #tech

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ruby-2.4.0

22 Mar 2017

Binding#irb Start a REPL session similar to binding.pry

Vishal Zambre

1 min read

Ruby 2.4.0 introduced new feature for debugging

#ruby #tech

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tech

21 Mar 2017

Free HTTPS Using Let’s Encrypt Certbot with NGINX

Vishal Zambre

2 min read

Let’s Encrypt is a new Certificate Authority which provides free SSL certificates (up to a certain limit per week). It came out of beta around...

#devops #nginx #ubuntu

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tech

20 Mar 2017

Jekyll Deployment using git hook

Vishal Zambre

1 min read

Sites built using Jekyll can be deployed in a large number of ways due to the static nature of the generated output. A one of...

#ruby #git #devops

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tech

19 Mar 2017

Install Ruby On Rails, Postgres, GitHub, Nginx with Passenger

Vishal Zambre

2 min read

To setup production environment with ruby, rails, nginx and passengeruse following steps one by one

#ruby #postgres #git +3 more

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