Doston Dostonlv

Task: Kuryerlar uchun to'lov (payout) hisoblash tizimi (til erkin)

Kontekst: kuryerlar buyurtma yetkazadi. Har oy oxirida har bir kuryer uchun o'sha oyda delivered bo'lgan buyurtmalar bo'yicha komissiya hisoblanadi va to'lanadigan summa (payout) chiqariladi. Bu yerda pul bilan ishlanadi, shuning uchun tizim ikki marta hisoblab qo'ymasligi va parallel so'rovlarga chidamli bo'lishi kerak.

Til, framework, kutubxona — ixtiyoringizda. Yagona shart: PostgreSQL va Docker'da bitta buyruq bilan ko'tarilishi kerak.

Kerakli jadvallar (nomi farqi yo'q, mantiq muhim):

couriers — kuryer (ism, telefon, ishga tushgan sana) orders — buyurtma (courier_id, summa, status: pending/delivered/cancelled/returned, delivered_at)

Task: Concurrent Order & Inventory Reservation Service (til erkin)

Kontekst: Mini marketplace uchun buyurtma va ombor boshqaruvchi backend service. til, framework, kutubxona — ixtiyoringizda. Yagona shart: HTTP API orqali ishlashi va Docker'da ko'tarilishi kerak.

Funktsional talablar:
POST /products — mahsulot yaratish (name, price, stock_quantity)
POST /orders — bir nechta item'li buyurtma, Idempotency-Key header majburiy (bir xil key bilan qayta yuborilsa, stock ikkinchi marta kamaymasligi kerak)

	package main

	import (
	"fmt"
	)

	type State interface {
	Next(o *Order)
	Name() string
	}

	package test

	import (
	jsoniter "github.com/json-iterator/go"
	"github.com/gofiber/fiber/v2"
	)

	var bufferPool = sync.Pool{
	New: func() any {
	return new(bytes.Buffer)

	package config

	import (
	"fmt"
	"genproto/geo_service"
	"os"

	"github.com/joho/godotenv"
	"github.com/spf13/cast"
	)

	name: CI/CD Pipeline

	on:
	push:
	branches:
	- feat/cd

	jobs:
	build_and_deploy:
	runs-on: ubuntu-latest

	name: CI/CD Pipeline for Go Services with PM2

	on:
	push:
	branches:
	- feat/ci

	jobs:
	build-and-deploy:
	runs-on: ubuntu-latest

	# Don't print a new line at the start of the prompt
	add_newline = true


	[character]
	success_symbol = "[λ](bold fg:129)"
	error_symbol = "[λ](bold fg:160)"

	[bun]
	format = "via [$symbol]($style)"

	package main

	import (
	"errors"
	"fmt"
	"log"
	"time"
	)

	// Models