Andrew-Chen-Wang

"""
Created by: @Andrew-Chen-Wang
Parallel calling OpenAI with rate limit handling.

Required packages:
- openai
- tenacity (optional if you remove the decorators. Useful for 500 errors)

Usage:
You must call with with_raw_response to get rate limit headers like:

Andrew-Chen-Wang

from bs4 import BeautifulSoup

# remove all attributes
def _remove_all_attrs(soup):
    for tag in soup.find_all(True): 
        tag.attrs = {}
    return soup

# remove all attributes except some tags
def _remove_all_attrs_except(soup):

Andrew-Chen-Wang

Listmonk setup and usage guide

When I first set up Listmonk it was to use with Amazon SES. At the time Amazon would give you free 62,000 emails/mo if you sent them from an EC2 instance. So EC2 was the best server to use. In mid 2023 Amazon ended that, so now you can use whatever server you like, which makes things much easier. It shouldn't be too hard to convert these directions to another server host of your choice.

I used Hetzner with another build, and once my free EC2 year ended the AWS t2.micro cost me $14/mo. Hetzner has better specs and costs me $5/mo, so I added an nginx vhost and moved listmonk to the same server. Here's a $20 credit for Hetzner.

There is also the possibility to use the 1-click installers for their featured hosts: https://listmonk.app/ - listed under "Hosting providers". I'm not familiar with any of them but there are lots of new guides

Andrew-Chen-Wang

How To: Debug React with Breakpoints with JetBrain IDE

Overview

Tired of writing console.log when debugging React? Want to use a debugger with breakpoints, stopping React and taking the time to analyze variables?

Welcome to adding a debugger for frontend development:)

Pre-requisite

Andrew-Chen-Wang

# Verify at https://github.com/Andrew-Chen-Wang/factory-boy-django-async

import inspect

import factory
from asgiref.sync import sync_to_async
from django.db import IntegrityError
from factory import errors
from factory.builder import BuildStep, StepBuilder, parse_declarations

Andrew-Chen-Wang

Example database setup of fine-grained role-based access control

For full code example using an ORM and all SQL queries shown, please visit: https://github.com/Andrew-Chen-Wang/role-based-fine-grained-access-control

This is an example implementation of relational database tables for fine-grained access control with custom permissions and roles, similar to AWS IAM roles and policies/permissions.

The example demonstration utilizes Django models as an easier way to interpret. It is also because I ripped it off my current application for others to inspect.

At Lazify, we allow roles to be dynamically created for our enterprise customers. We assume permissions are not allowed to be generated. This is because permissions, in our application, are baked into our backend logic. If dynamic permissions are allowed, prefer the method described in point 1 using a Permission table and an M2M between Permission and your User; just note that the below Python implementation does not demonstrate this.

Andrew-Chen-Wang

Kubernetes Cost Comparison EC2 vs EKS

EKS Kubernetes

AWS EKS service provides the Kubernetes control plane. Price for EKS Service is $0.20 per hour / cluster.

EKS Use Case Monthly Cost

Three clusters with four worker nodes.

Andrew-Chen-Wang

sudo apt-get update -y
sudo apt-get install -y \
    ca-certificates \
    curl \
    gnupg \
    lsb-release
sudo mkdir -p /etc/apt/keyrings
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /etc/apt/keyrings/docker.gpg
echo \
  "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.gpg] https://download.docker.com/linux/ubuntu \

Andrew-Chen-Wang

// Full demo found in https://github.com/Andrew-Chen-Wang/ios-django-picture-upload

//
//  ViewController.swift
//  jwt-ios
//
//  Created by Andrew Chen Wang on 3/2/20.
//  Copyright © 2020 Andrew Chen Wang. All rights reserved.
//

Andrew-Chen-Wang

#
# Copyright 2022 Andrew Chen Wang, Ur LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software