How I've Built a Profitable Slack Bot as a Side Project in Rails

I've built a Slack bot in Ruby on Rails and it is profitable. In this blog post I will describe what I did and tools I used to create, promote and monetize a simple SAAS product.

My Toolkit for Writing and Promotion of Blog Posts

I would like to describe a couple of tools which I use to create, release and promote my blog posts. If you already are a technical blogger, or maybe still only thinking about setting up your place on the internet, you might find some valuable tips for your own toolkit.

How to Track Down and Fix Slow Active Record SQL Queries in Rails

Scaling issues are great because it means that you have traffic on your website. Before you decide that 'Rails doesn't scale!' and start a rewrite to a tech stack with potentially more performance, maybe you should double check your database queries first. Below I describe some tools and techniques you can use to track down, diagnose and optimize slow Active Record SQL query.

Practical Differences between Working in Ruby and iOS

Developing iOS mobile apps and server-based Ruby applications is different on many levels. In this blog post, I will present a high-level overview of different aspects of day-to-day working in these technologies.

Serious SEO Mistake of Many Startups and Software Houses

Many software houses and startups are blogging regularly. A simple blog implementation detail can seriously hurt company's SEO rating and in consequence business. Read on if you are interested what’s the problem and how it can be fixed.

Reconsider Blogging on Medium if You Care about SEO

Medium is an extremely popular blogging platform for both newcomers and expert tech-savvy bloggers. I've noticed the serious SEO related issue with using it as your main blogging tool. Read on if you are curious how Medium hurts your internet brand and what's the alternative.

SEO Tips for Programming Blogs and Technical Bloggers in 2018

I've noticed that many programming blogs I read don't implement certain simple SEO techniques, and bloggers could be missing valuable traffic opportunities. I will describe a couple of search engine optimization tips which can improve your technical blog's SEO ranking and search results position in 2018. I will cover topics like Google's Featured Snippets, AMP, best rendering speed tips and social media meta tags.

Ruby on Rails Simple Service Objects and Testing in Isolation

Service Objects are not a silver bullet but they can take you a long way in modeling your Ruby on Rails app's domain logic. In this blog post, I will describe how I usually work with service object pattern in a structured way. I will also cover a simple testing in isolation with mocked services layer.

Optimize Rails Performance with Redis Caching and Rack Middleware

According to (a bit exaggerated) Pareto principle, 5% of your Rails app endpoints could account for 95% of performance issues. In this blog post I will describe how I improved a performance of my Rails application’s bottleneck endpoint by over 500% using a simple Redis caching technique and a custom Rack middleware.