Analyse comparative du traitement des fichiers CSV : Golang vs NestJS vs PHP vs Python

package main import ( "encoding/csv" "fmt" "os" "strconv" "time" ) func main() { start := time.Now() file, err := os.Open("../generate-csv/sales_data.csv") if err != nil { fmt.Println("Error:", err) return } defer file.Close() reader := csv.NewReader(file) _, _ = reader.Read() // Skip header totalSales := 0.0 productSales := make(map[string]float64) for { line, err := reader.Read() if err != nil { break } productID := line[1] quantity, _ := strconv.Atoi(line[2]) price, _ := strconv.ParseFloat(line[3], 64) total := float64(quantity) * price totalSales += total productSales[productID] += total } var topProduct string var topSales float64 for product, sales := range productSales { if sales > topSales { topProduct = product topSales = sales } } elapsed := time.Since(start) fmt.Printf("Golang Execution time: %s\n", elapsed) fmt.Printf("Total Sales: $%.2f\n", totalSales) fmt.Printf("Top Product: %s with sales $%.2f\n", topProduct, topSales) }

import { Injectable } from '@nestjs/common'; import * as fs from 'fs'; import * as fastcsv from 'fast-csv'; // path file CSV const GLOBAL_CSV_PATH = '../generate-csv/sales_data.csv'; @Injectable() @Injectable() export class CsvService { async parseCsv(): Promise<{ nestExecutionTime: number; totalSales: number; topProductSales: number; }> { return new Promise((resolve, reject) => { const startTime = process.hrtime(); let totalSales = 0; const productSales: { [key: string]: number } = {}; fs.createReadStream(GLOBAL_CSV_PATH) .pipe(fastcsv.parse({ headers: true, delimiter: ',' })) .on('data', (row) => { const productID = row.product_id; const quantity = parseInt(row.quantity, 10); const price = parseFloat(row.price); const total = quantity * price; totalSales += total; if (!productSales[productID]) { productSales[productID] = 0; } productSales[productID] += total; }) .on('end', () => { const topProduct = Object.keys(productSales).reduce((a, b) => productSales[a] > productSales[b] ? a : b, ); const topProductSales = productSales[topProduct] || 0; const endTime = process.hrtime(startTime); const nestExecutionTime = endTime[0] + endTime[1] / 1e9; console.log(`NestJS Execution time: ${nestExecutionTime} seconds`); console.log(`Total Sales: $${totalSales}`); console.log( `Top Product: ${topProduct} with sales $${topProductSales}`, ); resolve({ nestExecutionTime, totalSales, topProductSales, }); }) .on('error', (error) => reject(error)); }); } }

import { Controller, Get } from '@nestjs/common'; import { CsvService } from './csv.service'; @Controller('csv') export class CsvController { constructor(private readonly csvService: CsvService) {} @Get('parse') async parseCsv(): Promise<{ nestExecutionTime: number; totalSales: number; topProductSales: number; }> { return this.csvService.parseCsv(); } }

        

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import csv import time # Input file name config input_file = '../generate-csv/sales_data.csv' def parse_csv(file_path): start_time = time.time() total_sales = 0 product_sales = {} with open(file_path, mode='r') as file: reader = csv.DictReader(file) for row in reader: product_id = row['product_id'] quantity = int(row['quantity']) price = float(row['price']) total = quantity * price total_sales += total if product_id not in product_sales: product_sales[product_id] = 0 product_sales[product_id] += total top_product = max(product_sales, key=product_sales.get) execution_time = time.time() - start_time return { 'total_sales': total_sales, 'top_product': top_product, 'top_product_sales': product_sales[top_product], 'execution_time': execution_time, } if __name__ == "__main__": result = parse_csv(input_file) print(f"Python Execution time: {result['execution_time']:.2f} seconds") print(f"Total Sales: ${result['total_sales']:.2f}") print(f"Top Product: {result['top_product']} with sales ${ result['top_product_sales']:.2f}")