高并发秒杀系统的设计思路

import java.util.concurrent.Semaphore;

public class TrafficLimiter {
    private final Semaphore semaphore;

    public TrafficLimiter(int permits) {
        this.semaphore = new Semaphore(permits);
    }

    public boolean tryAcquire() {
        return semaphore.tryAcquire();
    }

    public void release() {
        semaphore.release();
    }
}

import redis.clients.jedis.Jedis;

public class RedisCache {
    private Jedis jedis;

    public RedisCache(String host, int port) {
        this.jedis = new Jedis(host, port);
    }

    public void set(String key, String value) {
        jedis.set(key, value);
    }

    public String get(String key) {
        return jedis.get(key);
    }
}

import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;

public class AsyncProcessor {
    private final ExecutorService executorService;

    public AsyncProcessor(int threadPoolSize) {
        this.executorService = Executors.newFixedThreadPool(threadPoolSize);
    }

    public void submit(Runnable task) {
        executorService.submit(task);
    }
}