# 致命错误：运行时：内存不足（定时器泄漏）

- **ID:** `go/goroutine-timer-leak`
- **领域:** go
- **类别:** resource_error
- **验证级别:** ai_generated
- **修复率:** 80%

## 根因

创建time.Timer或time.Ticker而不停止它们，导致协程泄漏和内存耗尽。

## 版本兼容性

| 版本 | 状态 | 引入 | 弃用 |
|------|------|------|------|
| 1.0 | active | — | — |
| 1.20 | active | — | — |

## 解决方案

1. **Always stop timers and tickers when done** (95% 成功率)
   ```
   ticker := time.NewTicker(time.Second)
defer ticker.Stop()
for range ticker.C {
    // do work
}
   ```
2. **Use time.After with select and timeout** (85% 成功率)
   ```
   select {
case <-ch:
case <-time.After(5 * time.Second):
    // timeout
}
   ```

## 无效尝试

- **Using time.After repeatedly without reset** — time.After creates new timer each call; old timers are not garbage collected until fired. (90% 失败率)
- **Ignoring ticker stop in defer** — Ticker continues to tick; goroutine leaks. (80% 失败率)