给出Java编写熔断和限流的代码

以下是Java编写熔断和限流的示例代码：

熔断：

public class CircuitBreaker {
    private int failureThreshold;
    private int resetTimeout;
    private long lastFailureTime;
    private int failureCount;

    public CircuitBreaker(int failureThreshold, int resetTimeout) {
        this.failureThreshold = failureThreshold;
        this.resetTimeout = resetTimeout;
        this.lastFailureTime = ;
        this.failureCount = ;
    }

    public boolean allowRequest() {
        if (failureCount >= failureThreshold) {
            long now = System.currentTimeMillis();
            if (now - lastFailureTime >= resetTimeout) {
                failureCount = ;
            } else {
                return false;
            }
        }
        return true;
    }

    public void markSuccess() {
        failureCount = ;
    }

    public void markFailure() {
        failureCount++;
        lastFailureTime = System.currentTimeMillis();
    }
}

限流：

public class RateLimiter {
    private int maxRequests;
    private int requestCount;
    private long intervalStart;

    public RateLimiter(int maxRequests) {
        this.maxRequests = maxRequests;
        this.requestCount = ;
        this.intervalStart = System.currentTimeMillis();
    }

    public synchronized boolean allowRequest() {
        long now = System.currentTimeMillis();
        if (now - intervalStart >= 100) {
            requestCount = ;
            intervalStart = now;
        }
        if (requestCount >= maxRequests) {
            return false;
        }
        requestCount++;
        return true;
    }
}