Klimo.io

Migrating from Heroku Postgres to PlanetScale

Mon, 01 Dec 2025 00:00:00 +0000

I recently migrated Robin PRO from Heroku Postgres to PlanetScale Postgres. PlanetScale, known for their MySQL offering, launched managed Postgres support and I decided to give it a try. The migration turned out to be surprisingly smooth.

There isn’t much content out there about migrating specifically from Heroku Postgres to PlanetScale, so I decided to write up my own process.

Exporting from Heroku Postgres

First, you’ll need your Heroku database credentials. You can find these in your Heroku dashboard or by running:

Cloudflare Tunnel for Shopify App Development

Sat, 11 Mar 2023 00:00:00 +0000

If you’ve worked on a Shopify app before, chances are you’ve used tunneling for local development. Historically, Shopify has been recommending ngrok across their docs and it’s still the go-to tool for most developers.

I’ve been using paid version of ngrok mainly in order to configure custom URLs for my tunnels to keep my configuration consistent. Using the following config, I’d route traffic to my web server and webpack dev server.

Migrating acts_as_list to ranked-model

Sun, 15 Jan 2023 00:00:00 +0000

I’ve been using acts_as_list since the very first release of my app. Lately I’ve noticed that it occasionally creates duplicate position values (a position of a record in a sorted collection should be unique). Besides, the algorithm for reordering items is not exactly optimal. For example, moving a record from the last position to the first will update every record in the list. Good reasons to migrate to ranked-model which uses a more sophisticated algorithm to minimize DB writes.

How to Embed Robin PRO Galleries

Thu, 14 Jan 2021 00:00:00 +0000

You’ve created your first Robin PRO gallery and uploaded some images. Great!

This article will show you how to display it anywhere on your site. There are two ways to do this and both of them are really simple.

Option A: Code snippet

Don’t worry, there is absolutely no coding involved. All you need to do is:

Step 1

Copy the code snippet.

Step 2

Paste it into the HTML content of your page.

Case Study: Double Your App's Throughput for Free With Jemalloc

Tue, 29 Dec 2020 00:00:00 +0000

Many great things have been said about using jemalloc, especially in the context of memory-constrained environments, such as Heroku.

This is CodeTriage's Sidekiq worker memory use with and without jemalloc. I'm really starting to wonder how much of Ruby's memory problems are just caused by the allocator. pic.twitter.com/FD0fVbJCLt
— Nate Berkopec (@nateberkopec) December 1, 2017

What jemalloc is or how it works is outside the scope of this post (visit the project’s homepage or read the research paper if you’d like to dive in).

Robin PRO Image Gallery

Sat, 05 Oct 2019 00:00:00 +0000

Robin PRO is the definitive image gallery app built for 2023. Fast, mobile-first, beautiful. A must-have for any shop owner who cares about details and pixel-perfect user experience. Create a great first impression that converts into sales!

Ready to take your store to the next level?

Seeding Images From Unsplash

Mon, 30 Sep 2019 00:00:00 +0000

Recently we’ve been making a more conscious effort to improve the quality of our seed data.

Firstly, to make it easier to onboard new team members. Secondly, to make the app ready for Review Apps. Certainly, it’s a great thing to be able to just re-seed your database if your local experiments go awry 😅

The kind of seeds I’ve seen over the years typically neglect images. They either use a minimal placeholder, use a few nicer images that are repeated over and over and checked into source control, or don’t do anything at all. How can we get this kind of awesomeness with almost no effort?

What Is Your App's MRR?

Tue, 17 Sep 2019 00:00:00 +0000

One of the most useful features I’d love to see Shopify add to the Partners portal is a chart of your MRR (monthly recurring revenue).

This answers a simple question of What is the current value of all of my active recurring charges? In other words, how much money will you receive in the next 30 days?

There is one problem with the Earnings chart:

It’s a lagging indicator showing you the last 30 days. Not very helpful if you need to know if your marketing or sales efforts are moving the needle.

Automating AWS Workflows

Sat, 10 Aug 2019 00:00:00 +0000

This article shows you how to use AWS CLI programmatically to automate your deployment process. We’ll upload assets to S3 (specifying their ACL and caching behavior) and invalidate CloudFront cache. Starting with a local shell script, we conclude with plugging the script into our CircleCI workflow. It may be especially useful if you’re using Rails with Webpacker, but no experience with Rails is required.

My latest Shopify app Robin PRO renders image galleries on customer stores. When the store loads, it fetches a remote script (client.js) together with a stylesheet (client.css), requests gallery data and renders the result.

Speeding Things Up With Ruby Inline

Thu, 21 Feb 2019 13:26:15 +0700

One of the fun exercises in The Complete Guide to Rails Performance is to profile the dalli gem with ruby-prof.

After cloning the repository and running ruby-prof test/benchmark_test.rb, we get the following summary:

 %self total self wait child calls name
 13.56 9.181 9.181 0.000 0.000 193917 <Class::IO>#select
 8.12 9.604 5.498 0.000 4.106 275009 Dalli::Ring#binary_search
 5.01 3.390 3.390 0.000 0.000 272536 Kgio::SocketMethods#kgio_write
 ...

That sparked my curiosity. Why is dalli spending so much time in binary_search and can it be improved?

Mon, 01 Jan 0001 00:00:00 +0000

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