新增了数据库的打开连接数限制，另外GC性能有提升

嗯，那可以fork 一下 $GOROOT/src/pkg/time/format.go

修改了一下。

package main

import (
"time"
"fmt"
"strings"
)

const (
DefaultTimeFormat = "2006-01-02 15:04:05.999999999"
)

func main() {
timeStr := time.Now().Format(DefaultTimeFormat)
timeStr = strings.Replace(timeStr, ".", ",", 1)
fmt.Printf("TimeNow: %s\n", timeStr)

timeStr = "2013-11-26 19:08:17,583492285"
fmt.Println("TimeTransferBefore:", timeStr)

timeStr = strings.Replace(timeStr, ",", ".", 1)

t, err := time.Parse(DefaultTimeFormat, timeStr)
if err != nil {
fmt.Println(err)
return
}

timeStr = t.Format(DefaultTimeFormat)
timeStr = strings.Replace(timeStr, ".", ",", 1)
fmt.Println("TimeTransferAfter:", timeStr)
}

e, fmt.Printf里面漏掉了一个 "。

试试这个行不行

import "time"
import "fmt"
import "strings"

const DefaultTimeFormat1 = "2006-01-02T15:04:05,999999999"
const DefaultTimeFormat2 = "2006-01-02T15:04:05.999999999"

func main() {
fmt.Printf("Time: %s\n, time.Now().Format(DefaultTimeFormat1))

// Transfer 2013-11-26 19:08:17,583492285 to time
timeStr = "2013-11-26 19:08:17,583492285"
timeStr = strings.Replace(timeStr, ",", ".", 1)

t, err := time.Prase(timeStr, DefaultTimeFormat2)
if err != nil {
fmt.Println(err)
return
}

fmt.Printf("TimeTransfer: %s\n, t.Format(DefaultTimeFormat1))
}

多看看 golang 的 api 文档就ok