wonrax

1. Nginx

$ wrk -t12 -c400 -d2s http://127.0.0.1:8080
Running 2s test @ http://127.0.0.1:8080
  12 threads and 400 connections
  Thread Stats   Avg      Stdev     Max   +/- Stdev
    Latency     7.71ms    3.16ms  23.05ms   69.17%
    Req/Sec     3.44k     1.98k    7.80k    58.22%
  63697 requests in 2.00s, 17.86MB read

The Go language for experienced programmers

Why use Go?

Like C, but with garbage collection, memory safety, and special mechanisms for concurrency
Pointers but no pointer arithmetic
No header files
Simple, clean syntax
Very fast native compilation (about as quick to edit code and restart as a dynamic language)
Easy-to-distribute executables

It took a few years, but I finally understand why member functions of classes in JavaScript aren't automatically bound to their objects, in particular when used in callback arguments.

In most object-oriented languages, functions are members of a class--they exist in memory only once, and when they are called, this is simply a hidden argument of the function which is assigned to the object that's calling it. Python makes this explicit by requiring that the first argument of a class's member function be self (Python's equivalent of this--you can name self whatever you want, but self is the convention).

class MyClass:

Local Postgres

This gist is an example of how you can simply install and run and extended Postgres using docker-compose. It assumes that you have docker and docker-compose installed and running on your workstation.

Install

Requires docker and docker-compose
Clone via http: git clone https://gist.github.com/b0b7e06943bd389560184d948bdc2d5b.git
Make load-extensions.sh executable
Build the image: docker-compose build

Optimizing Rust container builds

I'm a Rust newbie, and one of the things that I've found frustrating is that the default docker build experience is extremely slow. As it downloads crates, then dependencies, then finally my app - I often get distracted, start doing something else, then come back several minutes later and forget what I was doing

Recently, I had the idea to make it a little better by combining multistage builds with some of the amazing features from BuildKit. Specifically, cache mounts, which let a build container cache directories for compilers & package managers. Here's a quick annotated before & after from a real app I encountered.

Before

This is a standard enough multistage Dockerfile. Nothing seemingly terrible or great here - just a normal build stage, and a smaller runtime stage.

These are VMs running built with JavaScript/WASM allowing you to run an operating system within your browser, all client side.

Emulators

VMs

Anti-hype LLM reading list

Goals: Add links that are reasonable and good explanations of how stuff works. No hype and no vendor content if possible. Practical first-hand accounts of models in prod eagerly sought.

Foundational Concepts

	// Easy Frontend
	// Học FE đơn giản, dễ hiểu và đặc biệt phải vui ❤️
	// JS NÂNG CAO - Xử lý expired token trong Javascript như thế nào?


	// ❓ Chuyện gì xảy ra nếu giữa chừng token bị expired?
	// Ví dụ: 3 api requests đồng thời với nhau

	// TRƯỜNG HỢP 1: Token chưa expired, vẫn còn tốt chán 🤣
	// --request 1-->

	# nix-env --install --file ./default.nix
	let
	nixpkgs = builtins.fetchTarball {
	url = "https://github.com/NixOS/nixpkgs/archive/c473cc8714710179df205b153f4e9fa007107ff9.tar.gz";
	sha256 = "0q7rnlp1djxc9ikj89c0ifzihl4wfvri3q1bvi75d2wrz844b4lq";
	};

	config = {
	allowUnfree = true;
	};