How does it save money, can you give us an example? Thanks.

Sure, I pay less than a dollar most months then in my busy months I’ll pay a max of ~$20 for my backend.

It’s event software, like for a food festival. Most of the months there is almost 0 traffic, for 1-3 months there is lower traffic as pre-sales start with random spikes when the event organizers advertise, then for 1-5 days there is high traffic peaking on a single day or two during the event.

Because the load is incredibly spiky it’s nice to let Lambda scale automatically for me. Trying to scale a server, even bare metal, manually would be a pain in the ass. Even as I run this software for multiple events it’s cheaper than $5/mo and a $5 instance wouldn’t be able to handle the load at peak.

If my lambda bill ever got higher than an average of $20/mo I might consider a bare metal or VM server but honestly I prefer not thinking about it. And the profit dwarfs the server costs, like it’s not even close. The lambda server costs, even if they were 50x, would still be minor.

So how much do you need to reserve?

For volatile stocks like GME on IBKR right now, 300%, so very much the opposite of fractional reserve banking. Well, fractional, but the numerator is far larger than the denominator.

Could you try to run a training with ante included in the pot? I wonder if open-limping would be a viable strategy with some hands. No one knows that and it would be really interesting to find out. Ante should be equal to BB, like it was in WSOP Main Event.

I saw people who were going occasionally to casino without problems because nothing makes you lose and tilt so much as poker. I witnessed poker destroying families and people more than other games. There are people who don't like other casino games but lose heaps on poker and before they started poker their lives had more quality and meaning. I don't play other casino games but poker had a really bad influence on my life and the lives of people around me. Also, majority of money from poker comes from the players, not from the viewers and sponsors like in other sports, like football, baseball etc.

How can it have millions of tests with 25 million lines of code? How many lines of code is there including the code in the tests?

You can have automated test generation. I'd imagine with a database system, you'd have a big list of possible ingredients to a query and then go thorugh a series of nested for loops to concatenate them together and make sure each permutation works separately. That can easily make for thousands of tests with only a few lines of code.

Along with what eigenspace said, check out SQLite's Testing page: https://www.sqlite.org/testing.html (the project has 711 times as much test code and scripts, as code). You can go really far... and still miss things on occasion.

The 25 million lines of code is only the source code of Oracle Database written in C.

The test cases are written in a domain specific language named OraTst which is developed and maintained only within Oracle. OraTst is not available outside Oracle. The OraTst DSL looks like a mixture of special syntax to restart database, compare results of queries, change data configuration, etc. and embedded SQL queries to populate database and retrieve results.

I don't know how many more millions of lines of code the tests add. Assuming every test takes about 25 lines of code on an average (every test used to consume about half of my screen to a full screen), we can estimate that the tests themselves consume close to another additional 25 million lines of code to 50 million lines of code.