os01 VS Previous Serverless Version 0.5.x

Write an OS from scratch

(Here is the link - didn't quite get the image/link combo right in the original post!). I'm writing a series of posts about coding your own operating system. After reading Operating Systems: From 0 to 1 I found that some of the code does not work, so this first post walks you through writing a bootloader similar to that of chapter 7. It also adds some context that I would have found useful when I originally read the book, such as how 16-bit real mode works and some assembly programming information. I'm hoping to take a different approach to posts in the series by borrowing pieces of other operating systems and discussing how they are implemented in an effort to keep things simple and focus on fundamentals (even Linus started out with a detailed reading of MINIX).

Starting a series about writing your own operating system. After reading Operating Systems: From 0 to 1 I found that some of the code does not work, so this first post walks you through writing a bootloader similar to that of chapter 7. I'm hoping to take a different approach to posts in the series by borrowing pieces of other operating systems (even Linus started out with a detailed reading of MINIX).

Very quickly skimming through the various chapters, it appears that this is gentle introduction as attention has been made on clear and verbose explanations, supplemented with diagrams. Comparable other "courses" could be osdev101 [1] and "Writing an operating system from scratch" [2].

[1] https://github.com/tuhdo/os01/blob/master/Operating_Systems_...

[2] https://www.cs.bham.ac.uk/~exr/lectures/opsys/10_11/lectures...

You need to be aware of how it works on a hardware level but probably not an expert, for a better explanation see: https://github.com/tuhdo/os01

Operating Systems from 0 to 1

Github | Website

i deployed a lambda and http api gateway using a serverless.com (sls) template as a start. I get the following error when it processes a specific request:

Have you tried serverless.com ? It lets you have infrastructure as code.

- With Lambda, you manage creating and building the container yourself, as well as updating the Lambda function code. There are tools out there such as sst or serverless.com which help streamline this.

If you'd like to use Lambda, usually you need to engineer FOR it, from day one, you don't (often) get to choose some other framework and shoehorn it into Lambda and Serverless. There's some great frameworks to help deploy code into Lambda easily and create REST endpoints for things, one such frameworks is serverless.com that helps easily deploy to it, but it lacks a framework for doing REST that also supports local emulation (as easily). For that, I recommend a framework by AWS called Chalice. This is an amazing REST framework that runs a proxy that works locally and deploys exactly the same on Lambda, it is Python however.

I use serverless.com for AWS stuff.

After knocking out a README with a set of goals and a list of TODOs to check off as I made progress, I spent about 10 hours over a weekend trying to get something to work. I used serverless for making Lambda easier, Github Actions for the deploy pipeline and store my credentials; and sadly I rolled my own access_token refresh logic because I couldn't find a helper that just did that for me! wtf!?

Does everyone who uses Workers just use wrangler cli and the cloudflare console UI for everything or is anyone using other tools like serverless framework (https://serverless.com) instead? Looks like they added some support for cloudflare but haven't tried it yet.