# 致命错误：运行时：内存不足（定时器通道泄漏）

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

## 根因

创建大量 time.Timer 或 time.Ticker 而不停止它们，导致协程和通道泄漏，耗尽内存。

## 版本兼容性

| 版本 | 状态 | 引入 | 弃用 |
|------|------|------|------|
| 1.20 | active | — | — |
| 1.21 | active | — | — |

## 解决方案

1. **Always stop timers after use with defer.** (95% 成功率)
   ```
   timer := time.NewTimer(1 * time.Second)
defer timer.Stop()
select {
case <-timer.C:
    // do something
}
   ```
2. **Use time.NewTicker and stop it when done.** (90% 成功率)
   ```
   ticker := time.NewTicker(1 * time.Second)
defer ticker.Stop()
for range ticker.C {
    // periodic work
    if condition {
        break
    }
}
   ```

## 无效尝试

- **Using time.After in a loop without resetting.** — Each call to time.After creates a new timer; if not stopped, they accumulate. (90% 失败率)
- **Assuming timers are garbage collected after firing.** — Timers are not GC'd until they fire or are stopped; if not stopped, they remain in memory. (80% 失败率)