Skip to content

Instantly share code, notes, and snippets.

View vrajanap's full-sized avatar

Rajan Ponnappan vrajanap

View GitHub Profile

How to setup a practically free CDN using Backblaze B2 and Cloudflare

⚠️ Note 2023-01-21
Some things have changed since I originally wrote this in 2016. I have updated a few minor details, and the advice is still broadly the same, but there are some new Cloudflare features you can (and should) take advantage of. In particular, pay attention to Trevor Stevens' comment here from 22 January 2022, and Matt Stenson's useful caching advice. In addition, Backblaze, with whom Cloudflare are a Bandwidth Alliance partner, have published their own guide detailing how to use Cloudflare's Web Workers to cache content from B2 private buckets. That is worth reading,

Foreward

This document was originally written several years ago. At the time I was working as an execution core verification engineer at Arm. The following points are coloured heavily by working in and around the execution cores of various processors. Apply a pinch of salt; points contain varying degrees of opinion.

It is still my opinion that RISC-V could be much better designed; though I will also say that if I was building a 32 or 64-bit CPU today I'd likely implement the architecture to benefit from the existing tooling.

Mostly based upon the RISC-V ISA spec v2.0. Some updates have been made for v2.2

Original Foreword: Some Opinion

The RISC-V ISA has pursued minimalism to a fault. There is a large emphasis on minimizing instruction count, normalizing encoding, etc. This pursuit of minimalism has resulted in false orthogonalities (such as reusing the same instruction for branches, calls and returns) and a requirement for superfluous instructions which impacts code density both in terms of size and

@cb372
cb372 / riscv.md
Last active April 9, 2025 19:53
Writing an OS in Rust to run on RISC-V

(This is a translation of the original article in Japanese by moratorium08.)

(UPDATE (22/3/2019): Added some corrections provided by the original author.)

Writing your own OS to run on a handmade CPU is a pretty ambitious project, but I've managed to get it working pretty well so I'm going to write some notes about how I did it.

@lattner
lattner / TaskConcurrencyManifesto.md
Last active May 11, 2025 07:07
Swift Concurrency Manifesto
@harshavardhana
harshavardhana / nginx-minio-static.md
Last active May 6, 2025 07:55 — forked from koolhead17/gist:4b8dd8d95ec86368634693cf9ad9391c
How to configure static website using Nginx with MinIO ?

How to configure static website using Nginx with MinIO ?

1. Install nginx

2. Install minio

3. Install mc client

4. Create a bucket:

$ mc mb myminio/static
Bucket created successfully ‘myminio/static’.
@yancyn
yancyn / git-svn.md
Last active March 2, 2025 18:05
Migrate Archive Google Code SVN to Git

Migrate Archive Google Code SVN to Git

Requirements

  • git
  • git-svn

Setup¹

$ sudo apt-get install git
$ sudo add-apt-repository ppa:git-core/ppa
@yossorion
yossorion / what-i-wish-id-known-about-equity-before-joining-a-unicorn.md
Last active April 15, 2025 22:49
What I Wish I'd Known About Equity Before Joining A Unicorn

What I Wish I'd Known About Equity Before Joining A Unicorn

Disclaimer: This piece is written anonymously. The names of a few particular companies are mentioned, but as common examples only.

This is a short write-up on things that I wish I'd known and considered before joining a private company (aka startup, aka unicorn in some cases). I'm not trying to make the case that you should never join a private company, but the power imbalance between founder and employee is extreme, and that potential candidates would

FWIW: I (@rondy) am not the creator of the content shared here, which is an excerpt from Edmond Lau's book. I simply copied and pasted it from another location and saved it as a personal note, before it gained popularity on news.ycombinator.com. Unfortunately, I cannot recall the exact origin of the original source, nor was I able to find the author's name, so I am can't provide the appropriate credits.


Effective Engineer - Notes

What's an Effective Engineer?

@rrafal
rrafal / sqlx_json.go
Created March 31, 2016 00:02
Use JSON field with golang sqlx driver
package main
import (
"encoding/json"
"errors"
"database/sql/driver"
"fmt"
"github.com/jmoiron/sqlx"
_ "github.com/lib/pq"
"log"