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One more reason to choose Postgres over MySQL

Almost always, I'd choose Postgres over any database for a new project because it's flexible and support multi-variances of scenarios that may require different performance characteristics. However, I don't generally feel strongly about MySQL vs. Postgres. Either seems fine.... until I've learned

Set up Programmable Tooltip to open Sublime with a specific file

Today I just set up a more complex and powerful use case: I now can select a file path and open the Sublime text to see that file. Occasionally, I'd see a file path in my terminal because it is printed by the program that is running, and

Set up the vim mode in IntelliJ to be aware of CamelCase

I work with Java and Scala quite a lot, and last week I've realized that hey maybe I should set up w and b in vim to jump to the next word in CamelCase. There is this cool vim plugin: https://github.com/chaoren/vim-wordmotion – However, the vim

My secret productivity app when I worked at Stripe

The tool: ProgrammableTooltip.com (disclaimer: I'm the creator) Back in 2019, I just joined Stripe and worked on Billing Analytics. I was working the timezone part of it. Side note: daylight saving is insane. I found myself needing to convert epoch-from-millis to human-readable date extremely often when I

Set up IntelliJ to run scalatest's FunSpec

I finally set up IntelliJ to be able to run a FunSpec test. For so long, I didn't know why it didn't work until I embarked on a short journey to find out. My FunSpec test is often complex with set up code and layers of

The correct way to model a timestamp range is [start, end)

Or things that are not mathematically precise will cause you pain down the line.

Building the load more mechanism for an infinite scroll

Let's set up the problem first. You have a list of posts and you want to show them "infinite-scroll"-style sorting from the newest post to the oldest post. Well, obviously, you can't just load every single post into the page at once. Therefore,

Play Framework: Session's Gotchas

I've just switched our cookies to Play's Session. I was previously under the impression that "Session" is temporary, as in the stored value isn't persisted after the browser is closed. After looking closely at it, Play's Session is implemented using

Integrate JobRunr into Play Framework [Update Sep 2025]

💡This blog has been updated in Sep 2025 with new insights. new insights and updates * An example of using JobRunr is shown in PlayFast (an opinionated production-ready PlayFramework template that make you productive). * The admin dashboard can run on the same instance as the background server. We don't

A succinct early exit trick for Option in Scala

I've realised that return in Scala only apply to a method. This led me to a cool early exit trick that I use everywhere. It looks a bit off because I, for some reason, think return should have applied to the current lambda. But that's not