秒杀系统限流防刷防攻击静态页面等方案：

限流：在秒杀活动开始前，可以设置一个限流阈值，限制用户每秒钟的请求次数。可以使用Redis等缓存工具实现限流功能。防刷：可以使用验证码等方式来防止用户通过脚本等方式刷单。可以使用谷歌的reCAPTCHA或者阿里云的人机验证等第三方工具，也可以自己实现验证码功能。防攻击：可以使用反爬虫技术来防止恶意攻击。可以使用IP黑名单、User-Agent过滤等方式来判断是否是恶意请求。静态页面：为了减轻服务器压力，可以使用静态页面来展示商品信息、秒杀倒计时等内容。可以使用Vue.js、React等前端框架来实现静态页面。分布式部署：为了防止单点故障，可以将秒杀系统部署在多台服务器上，使用负载均衡技术来分发请求。可以使用Nginx、HAProxy等负载均衡工具。数据库优化：为了提高系统性能，可以使用数据库读写分离、缓存等技术来优化数据库性能。可以使用MySQL、Redis等数据库和缓存工具。

综上，以上方案可以综合使用，来提高秒杀系统的性能和安全性。

Java代码示例：

限流方案示例： 使用Redis实现令牌桶算法的限流功能。

public class RedisRateLimiter {    private static final String REDIS_KEY_PREFIX = "rate_limiter:";    private static final String REDIS_TOKEN_BUCKET = "token_bucket";    private static final String REDIS_LAST_REFILL_TIME = "last_refill_time";    private static final int DEFAULT_RATE = 10; // 每秒钟放入多少个令牌    private static final int DEFAULT_CAPACITY = 100; // 令牌桶的容量    private RedisTemplate<String, Object> redisTemplate;    private int rate;    private int capacity;     public RedisRateLimiter(RedisTemplate<String, Object> redisTemplate) {        this(redisTemplate, DEFAULT_RATE, DEFAULT_CAPACITY);    }     public RedisRateLimiter(RedisTemplate<String, Object> redisTemplate, int rate, int capacity) {        this.redisTemplate = redisTemplate;        this.rate = rate;        this.capacity = capacity;        init();    }     private void init() {        String key = getRedisKey();        Long now = System.currentTimeMillis();        redisTemplate.opsForHash().putIfAbsent(key, REDIS_TOKEN_BUCKET, capacity);        redisTemplate.opsForHash().putIfAbsent(key, REDIS_LAST_REFILL_TIME, now);    }     public boolean acquire() {        String key = getRedisKey();        Long now = System.currentTimeMillis();        Long lastRefillTime = (Long) redisTemplate.opsForHash().get(key, REDIS_LAST_REFILL_TIME);        Long elapsedTime = now - lastRefillTime;        int tokensToAdd = (int) (elapsedTime * rate / 1000); // 计算需要添加的令牌数        if (tokensToAdd > 0) {            redisTemplate.opsForHash().put(key, REDIS_LAST_REFILL_TIME, now);            redisTemplate.opsForHash().increment(key, REDIS_TOKEN_BUCKET, tokensToAdd);        }        int tokens = (int) redisTemplate.opsForHash().get(key, REDIS_TOKEN_BUCKET);        if (tokens > 0) {            redisTemplate.opsForHash().decrement(key, REDIS_TOKEN_BUCKET);            return true;        }        return false;    }     private String getRedisKey() {        return REDIS_KEY_PREFIX + rate + ":" + capacity;    }}

public class CaptchaValidator {    private static final String GOOGLE_RECAPTCHA_VERIFY_URL = ";;    private String secretKey;     public CaptchaValidator(String secretKey) {        this.secretKey = secretKey;    }     public boolean validate(String token, String remoteIp) {        try {            URL url = new URL(GOOGLE_RECAPTCHA_VERIFY_URL);            HttpURLConnection conn = (HttpURLConnection) url.openConnection();            conn.setRequestMethod("POST");            conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");            conn.setDoOutput(true);            String params = "secret=" + secretKey + "&response=" + token + "&remoteip=" + remoteIp;            OutputStreamWriter writer = new OutputStreamWriter(conn.getOutputStream());            writer.write(params);            writer.flush();            BufferedReader reader = new BufferedReader(new InputStreamReader(conn.getInputStream()));            String line;            StringBuilder response = new StringBuilder();            while ((line = reader.readLine()) != null) {                response.append(line);            }            reader.close();            JSONObject json = new JSONObject(response.toString());            return json.getBoolean("success");        } catch (Exception e) {            e.printStackTrace();            return false;        }    }}

public class RequestFilter {    private Set<String> ipBlacklist;    private Set<String> userAgentBlacklist;     public RequestFilter(Set<String> ipBlacklist, Set<String> userAgentBlacklist) {        this.ipBlacklist = ipBlacklist;        this.userAgentBlacklist = userAgentBlacklist;    }     public boolean isRequestValid(HttpServletRequest request) {        String ip = request.getRemoteAddr();        String userAgent = request.getHeader("User-Agent");        if (ipBlacklist.contains(ip)) {            return false;        }        if (userAgentBlacklist.contains(userAgent)) {            return false;        }        return true;    }}

html<!DOCTYPE html><html xmlns:th=";><head>    <meta charset="UTF-8">    <title>秒杀商品列表</title></head><body>    <h1>秒杀商品列表</h1>    <table>        <thead>            <tr>                <th>商品名称</th>                <th>价格</th>                <th>库存</th>                <th>秒杀开始时间</th>                <th>秒杀结束时间</th>                <th>操作</th>            </tr>        </thead>        <tbody>            <tr th:each="item : ${items}">                <td th:text="${item.name}"></td>                <td th:text="${item.price}"></td>                <td th:text="${item.stock}"></td>                <td th:text="${item.startTime}"></td>                <td th:text="${item.endTime}"></td>                <td><a th:href="@{/seckill/{id}(id=${item.id})}">立即秒杀</a></td>            </tr>        </tbody>    </table></body></html>

nginxupstream seckill {    server 192.168.1.1:8080;    server 192.168.1.2:8080;    server 192.168.1.3:8080;} server {    listen 80;    server_name example.com;     location /seckill/ {        proxy_pass ;    }}