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# celery_config.py
"""
Celery Configuration Module

This module provides the core Celery configuration for handling long-running tasks
in a FastAPI application with Redis as broker and result backend.

Key Features:
- Redis broker configuration with connection pooling
- Task routing and queue management

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import os
import json
from datetime import datetime, timedelta
from typing import Optional, Dict, Any
from dataclasses import dataclass
from functools import lru_cache
import threading

import boto3
from botocore.exceptions import ClientError

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ESLint Rule: Prevent Deprecated MUI Grid Props (v7+)

Material UI v7 removed the following props from the Grid component:

• item, container, xs, sm, md, lg, xl, spacing

To enforce the new API (Grid for layout, GridCol for columns/items, gap for spacing, span/md/lg for breakpoints), use this ESLint rule in your config.

---

Why?

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FastAPI Streaming Cheat‑Sheet

1  Why stream?

• Lower latency – send data as soon as it’s ready.
• Reduced memory footprint – no need to build the whole response in RAM.
• Natural fit for long‑running jobs – DB cursor paging, ML inference, log tails, etc.

---

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Angular LoadState Utility

Lightweight helper that converts any Observable<T> into an Observable<LoadState<T>>, packaging status, data, and error in a single, UI‑friendly payload.

---

1. Types

export type LoadStatus = 'idle' | 'loading' | 'empty' | 'success' | 'error';

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from PIL import Image
import os

def join_images_vertically(input_dir='img', output_file='combined_image.png'):
    """
    Combines all images in the input directory into a single vertical image.
    
    Args:
        input_dir (str): Directory containing input images
        output_file (str): Name of the output file

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import globals from "globals";
import eslint from "@eslint/js";
import tseslint from "typescript-eslint";
import tsEslintPlugin from "@typescript-eslint/eslint-plugin";
import tsParser from "@typescript-eslint/parser";
import angularPlugin from '@angular-eslint/eslint-plugin';
import angularTemplatePlugin from "@angular-eslint/eslint-plugin-template";
import angularTemplateParser from "@angular-eslint/template-parser";
import importPlugin from 'eslint-plugin-import';
import unusedPlugin from 'eslint-plugin-unused-imports';

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tldr

given an existing node install and project files (server.js), use pm2 to automatically start it after system boot.
this was completed on a raspberry pi 3 for educational purposes.

globally install pm2: sudo npm install -g pm2 start node: pm2 start server.js start on boot: pm2 startup + pm2 save

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Customer ID,Age,Gender,Loyalty Member,Product Type,SKU,Rating,Order Status,Payment Method,Total Price,Unit Price,Quantity,Purchase Date,Shipping Type,Add-ons Purchased,Add-on Total
1000,53,Male,No,Smartphone,SKU1004,2,Cancelled,Credit Card,5538.33,791.19,7,3/20/2024,Standard,"Accessory,Accessory,Accessory",40.21
1000,53,Male,No,Tablet,SKU1002,3,Completed,Paypal,741.09,247.03,3,4/20/2024,Overnight,Impulse Item,26.09
1002,41,Male,No,Laptop,SKU1005,3,Completed,Credit Card,1855.84,463.96,4,10/17/2023,Express,,0
1002,41,Male,Yes,Smartphone,SKU1004,2,Completed,Cash,3164.76,791.19,4,8/9/2024,Overnight,"Impulse Item,Impulse Item",60.16
1003,75,Male,Yes,Smartphone,SKU1001,5,Completed,Cash,41.5,20.75,2,5/21/2024,Express,Accessory,35.56
1004,41,Female,No,Smartphone,SKU1001,5,Completed,Credit Card,83,20.75,4,5/26/2024,Standard,"Impulse Item,Accessory",65.78
1005,25,Female,No,Smartwatch,SKU1003,3,Completed,Paypal,7603.47,844.83,9,1/30/2024,Overnight,,0
1005,25,Female,No,Laptop,SKU1005,3,Completed,Debit Card,4175.64,463.96