heard | React Native Enterprise Social Messaging App | AWS library

hopefull someone can shed some light on this topic and here are some of my questions:

• How do big ecommerce websites manage their images for their websites?
• Is there any Best Practices should be consider when deciding where to keep websites images?
• I have heard to keep the images in multiple folder structure on the same server where the website is hosted so websites can render them easily and fast since they are all on same server - Is this the idea solution?
• How do professionals or big ecommerce handle images storage and maintain website images reliability and stability?
• Is Azure or AWS etc best place to store images for websites rendering?

Thanks in advance!

I'm reading through the WAI-ARIA specs and they state "The main role is a non-obtrusive alternative for 'skip to main content' links".

Now, I've never heard this, and the first few Google results I've seen are either out-of-date or point right back to the spec. Is there enough (any?) support among accessibility tools to consider phasing out "skip to content" links when a main role is present?

I am very new to SQL and have been given a dataset to clean as part of my internship.

I reproduce part of the table below:

I have a few Python files, and I want to pack them into an exe and distribute commercially, but also make sure that no one is able to see the source code of the files... I have heard about pyarmor module, but it does not provide full obfuscation.. Any help regarding this?

I have heard stuff about Cython and Pyinstaller, but never got it to work. I have seen many posts on how to first convert the code to C source code, and then compile it to exe but none of those worked for me.. Anyone here willing to tell me how can I achieve the same?

I've heard a lot of people talk about some of the causes but they never really answer if it should be fixed or not. I checked my dataset for leaks and I took 20% for my validation set at random from a TFRecords dataset. I'm starting to suspect that my model has too many regularization layers. Should I lessen my regularization to get the validation line on top of the training line? or does it really even matter?

I heard that I should always do user interface work on the main thread while reading data from Firebase.

I tried to do self.tableView.reloadData on the background thread inside a Firebase observe(.value) function and the app did not crash or freeze.

Im new to this so im a little confused. I have a PHP script that is in an infinite loop. It will never stop looping after i execute it once. And i need to run it on my linux server. I was thinking about using crontab,but apparently,it only can execute a script every minute. What i dont get is; If my PHP script is running in an infinite loop,do i need to only run it once and it would work fine,right? So do i just need to use crontab to run my script ONCE,and then to run on restart,and it would work?

I wont post my script here because there is no need to. Just imagine something like

I'm building a react app, and it's the first time I've done a really big project. I've just heard someone in a video briefly mention that large companies like facebook have a few button designs, which I guess they then import into there project. Is this so the buttons across the app have consistent designs, colors, etc. If so, will this be better or worse for performance if I just make 2-3 button designs and then import them into other components when I need them. I've currently got about 100 buttons in my app, which all look fairly similar, but aren't completely the same, mostly just the padding and height are different, but I've given every button a unique className and then redone the css for every button. This seems like it would be bad for performance and also the overall design of the app.

This is how I've made the new button component, would this be correct and should I even make button components for my app?

I have been self-learning TypeScript via the TS docs. While reading a section that I posted below, (in text form, as well as the link), I came across a word I haven't heard before ARITY. Usually I just search the TS docs to find out what some specific syntax means, but I am guessing this isn't TypeScript, because the docs didn't return any specific definition for 'Arity' in the search Results. As stated above, below is the documentation I came across, that uses 'Arity'. The documentation relies on heavily on the definition of 'arity', and I couldn't find anyone defining it here on stackoverflow, or in a DDG search. If anyone could define this for me that would be awesome.