go resource_error ai_generated true

sql: 连接池耗尽：连接过多

sql: connection pool exhausted: too many connections

ID: go/sql-connection-pool-exhausted

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80%修复率
82%置信度
0证据数
2024-02-20首次发现

版本兼容性

版本状态引入弃用备注
1.20 active — — —

根因分析

并发数据库请求超过可用连接数，达到连接池最大限制。

English

More concurrent database requests than available connections; pool max limit reached.

generic

解决方案

  1. 90% 成功率 
    Use connection pooling with SetMaxOpenConns and SetMaxIdleConns, and use context timeouts: db.SetMaxOpenConns(10); db.SetConnMaxLifetime(time.Minute)
  2. 85% 成功率 
    Implement a semaphore to limit concurrent queries: sem := make(chan struct{}, 10); sem <- struct{}{}; defer func(){<-sem}()

无效尝试

常见但无效的做法:

  1. 60% 失败

    Unlimited connections can overwhelm database server.

  2. 50% 失败

    May not be feasible; pool still limited.