tldr:

it’s always elasticsearch but now more of it and smaller

Ban data collection agencies, cause they stalk/harass all users.

I sent your comment (with the licence) to all AI companies, that I know of and they will use it for training data.

Just to illustrate how wrong you are. Might set up a bot later.

Altcha is free if you selfhost it.

On their website they have 2 pricing tiers: “Pro” (9€ per month) and “Open Source” (Free)

And yet, only €376.3/month on patreon.

Also, I keep wondering why Anubis got so popular while other proof of work captchas have been around for much longer. Is there any fundamental difference to mCaptcha or altcha?

(except for maybe that altcha is trying to make a business by serving customers that don’t want to selfhost it).

Any technical reason for prefering anubis?

1. Software Architects Handbook - Joseph Ingeno
2. Game Programming Patterns - Robert Nystrom
3. Tidy First - Kent Beck

First one I found the most useful.

Second one gave me a new perspective, even though I am not programming games, I could apply this new perspective to my regular code.

Third one is the nicest book on that topic. I hated “the classics” but I enjoyed this one a lot.

Bonus round:

4. Etudes for Programmers - Charles Wetherell

It’s how I learned to code.

Put them into an opensearch database. It is the open source fork of elasticsearch. It has an sql plugin so you can retrieve the raw data the usual way. And there is probably also an integeation/library for it if you use any major framework/language in the backend.

But on top of it you get a very performant full text search. This might come in handy for example when you remember a sentence from a story, or if you want to find all stories with a specific character name or word for whatever reason.