Inżynieria systemów backendowych & Nowoczesny Kod

package com.kowalski.it.core;

@Service
public class BackendOptimizationService {
    private final MetricsRegistry metrics;

    public CompletableFuture<ServiceResponse> executePipeline() {
        return CompletableFuture.supplyAsync(() -> {
            System.out.println("[ENGINE] Initializing Java runtime...");
            return new ServiceResponse(200, "High-throughput active");
        });
    }
}

import asyncio
from typing import Dict, Any

class DataStreamEngine:
    def __init__(self, workers: int = 8):
        self.workers = workers
        self.is_running = True

    async def process_stream(self, payload: Dict[str, Any]) -> bool:
        """Wysokowydajna analityka i automatyzacja procesów."""
        await asyncio.sleep(0.05)
        return True

WITH HighVolumeTransactions AS (
    SELECT 
        t.id, t.created_at, t.payload_size,
        ROW_NUMBER() OVER (PARTITION BY t.client_id ORDER BY t.created_at DESC) AS rank
    FROM cluster_records t
    WHERE t.status = 'COMPLETED'
)
SELECT * FROM HighVolumeTransactions WHERE rank <= 10;
-- Optymalizacja indeksu B-Tree zredukowała czas o 92%