Understanding Comparative Benchmarks

I'm going to do something that I don't normally do, which is to say I'm going to talk about comparative benchmarks. In general, I try to confine performance discussion to absolute metrics as much as possible, or comparisons to other well-defined neutral reference points. This is precisely why Cats Effect's readme mentions a comparison to a fixed thread pool, rather doing comparisons with other asynchronous runtimes like Akka or ZIO. Comparisons in general devolve very quickly into emotional marketing.

But, just once, today we're going to talk about the emotional marketing. In particular, we're going to look at Cats Effect 3 and ZIO 2. Now, for context, as of this writing ZIO 2 has released their first milestone; they have not released a final 2.0 version. This implies straight off the bat that we're comparing apples to oranges a bit, since Cats Effect 3 has been out and in production for months. However, there has been a post going around which cites various compar

djspiewak / greasing-the-skids.md

Last active October 22, 2023 04:30

Greasing the Skids: Building Remote Teams

In the wake of the virus that-must-not-be-named (which most people misname anyway), it seems like everyone and their cat has posted some sort of opinion or how-to on making remote work, work. This is a good thing! Working remotely, particularly full-time, is hard! I've done it for my entire career (aside from an odd 14 month office period in the middle that we shall not speak of), but more relevantly, for the past two years I've been responsible for building, managing, and enabling an entirely remote team, distributed across nine timezones. Remote teams don't just happen by installing Slack and telling everyone to work on their couch: they require a lot of effort to do correctly and efficiently. But, done right, it can be a massive multiplier on your team efficiency and flexibility.

Here's how we do it. I'm going to attempt to structure this post more towards management than engineering, and so I apologize in advance if I assume terminology or knowledge which

rendeiro / LandingProduct.md

Last active January 17, 2018 14:43

One does not simply walk into Product Management

One does not simply walk into Product 👌

#CallForSpeakers pitch for #LandingFestival Berlin 2018 (March 14, 15)

Interested in how to transition into Product Management? 💊

Vote for this talk to be selected by giving a star ⭐ to this repo.

More info on the Festival here: https://landingfestival.com/berlin.

djspiewak / quick-tips-optimizing-jvm.md

Last active August 28, 2025 08:58

Quick Tips for Fast Code on the JVM

I was talking to a coworker recently about general techniques that almost always form the core of any effort to write very fast, down-to-the-metal hot path code on the JVM, and they pointed out that there really isn't a particularly good place to go for this information. It occurred to me that, really, I had more or less picked up all of it by word of mouth and experience, and there just aren't any good reference sources on the topic. So… here's my word of mouth.

This is by no means a comprehensive gist. It's also important to understand that the techniques that I outline in here are not 100% absolute either. Performance on the JVM is an incredibly complicated subject, and while there are rules that almost always hold true, the "almost" remains very salient. Also, for many or even most applications, there will be other techniques that I'm not mentioning which will have a greater impact. JMH, Java Flight Recorder, and a good profiler are your very best friend! Mea

d1egoaz / learning_scala.org

Last active August 19, 2025 23:29

If you want to learn Scala, I’d suggest:

Install IntelliJ + Scala Plugin
Don’t do the Coursera courses yet.
Don’t do the “red book” Functional Programming in Scala yet.
Do: http://underscore.io/books/
- Essential Scala
- Essential Play
- Essential Slick
Do Scala for the Impatient: https://www.amazon.com/Scala-Impatient-Cay-S-Horstmann/dp/0321774094
The Neophyte’s Guide to Scala http://danielwestheide.com/scala/neophytes.html

eliperkins / implementing-a-strong-code-review-culture.md

Created September 4, 2015 20:40

Implementing a Strong Code-Review Culture

As an author

Provide more/sufficient context around changes
Linking to the issue isn't always enough
Challenge: 2 paragraphs of context

As a reviewer

Offer compliments in PRs when you learn or something is done well
Ask questions rather than make demands/commands, engage in conversation

miguelfrde / archinstall.md

Last active January 30, 2025 16:28

Preinstalled Windows 8.1 and Arch Linux dual boot

Arch Linux installation (preinstalled Windows 8.1 dual boot)

Before

Disable Windows Fast-Startup
Disable Secure Boot

Silvia P. smourapina