Java中面临的延迟、欠时和totalHoursWorked问题

// 使用连接池优化数据库连接
HikariConfig config = new HikariConfig();
config.setJdbcUrl("jdbc:mysql://localhost:3306/mydb");
config.setUsername("user");
config.setPassword("password");
HikariDataSource dataSource = new HikariDataSource(config);

// 使用缓存减少数据库查询次数
LoadingCache<String, String> cache = CacheBuilder.newBuilder()
    .maximumSize(1000)
    .expireAfterWrite(10, TimeUnit.MINUTES)
    .build(new CacheLoader<String, String>() {
        public String load(String key) throws Exception {
            return queryFromDatabase(key);
        }
    });

// 使用线程池管理线程资源
ExecutorService executor = Executors.newFixedThreadPool(10);
for (int i = 0; i < 100; i++) {
    executor.submit(new Task());
}
executor.shutdown();

// 优化算法减少计算时间
public void optimizedMethod() {
    // 使用更高效的算法
}

// 使用JMX监控系统资源使用情况
MBeanServer mbs = ManagementFactory.getPlatformMBeanServer();
ObjectName name = new ObjectName("com.example:type=Hello");
Hello mbean = (Hello) MBeanServerInvocationHandler.newProxyInstance(
    mbs, name, Hello.class, true);

// 定期检查并清理无用对象
ScheduledExecutorService scheduler = Executors.newScheduledThreadPool(1);
scheduler.scheduleAtFixedRate(() -> {
    System.gc();
}, 0, 1, TimeUnit.HOURS);