前沿：
这两天试着用golang做一些高性能的api，不想把压力到聚合在平台的接口上。平台因为要做很多耗时间的操作，uwsgi下会出现少许错误，找了一圈不知道如何解决该问题。 暂时先绕道而行，先拿简单的接口来做测试，慢慢的把复杂的操作也迁移到golang上。
话说以前高性能的接口，我用的最多的方案还是nginx lua的组合，超强，大家可以看看我以前写的nginx lua的文章，各方面没得说。只是这段时间正在看golang 的，就试着用golang实现redis的api，先来个简单的试试手。
先搞下golang的redis模块
cd $GOPATH/src git clone git://github.com/alphazero/Go-Redis.git redis cd redis go install
简单说下golang操作redis的例子
//xiaorui.cc
package main
import (
"os";
"bufio";
"log";
"fmt";
"redis";
)
/*
hello world, redis style.
*/
func main () {
// create the client. Here we are using a synchronous client.
// Using the default ConnectionSpec, we are specifying the client to connect
// to db 13 (e.g. SELECT 13), and a password of go-redis (e.g. AUTH go-redis)
spec := redis.DefaultSpec().Db(13).Password("go-redis");
client, e := redis.NewSynchClientWithSpec (spec);
if e != nil { log.Println ("failed to create the client", e); return }
key := "examples/hello/user.name";
value, e := client.Get(key);
if e!= nil { log.Println ("error on Get", e); return }
if value == nil {
fmt.Printf("\nHello, don't believe we've met before!\nYour name? ");
reader:= bufio.NewReader(os.Stdin);
user, _ := reader.ReadString(byte('\n'));
if len(user) > 1 {
user = user[0:len(user)-1];
value = []byte(user);
client.Set(key, value);
} else {
fmt.Printf ("vafanculo!\n");
return;
}
}
fmt.Printf ("Hey, ciao %s!\n", fmt.Sprintf("%s", value));
}
我写的实例，大家看懂了后，完全可以做更多的扩展。
其实golang自带的http很有mvc的感觉，三者做了一些分离，很像python里面的web.py tornado。。。
测试结果：
服务端的启动
客户端的测试
//xiaorui.cc
package main
import(
"fmt"
"net/http"
"io/ioutil"
"log"
"time"
"redis"
)
//xiaorui.cc
const AddForm = `
<html><body>
<form method="POST" action="/add">
Name: <input type="text" name="name">
Age: <input type="text" name="age">
<input type="submit" value="Add">
</form>
</body></html>
`
const setform = `
<html><body>
<form method="POST" action="/set">
key: <input type="text" name="key">
value: <input type="text" name="value">
<input type="submit" value="set">
</form>
</body></html>
`
func Handler( w http.ResponseWriter,r *http.Request ){
path := r.URL.Path[1:]
if path == "favicon.ico" {
http.NotFound(w, r)
return
}
if path == ""{
path = "index.html"
}
contents,err:= ioutil.ReadFile( path )
if err !=nil{
fmt.Fprintf( w,"404" )
return
}
fmt.Fprintf( w,"%s\n",contents )
}
func Add( w http.ResponseWriter,r *http.Request ){
name := r.FormValue("name")
age := r.FormValue("age")
if name == "" || age == "" {
fmt.Fprint(w, AddForm)
return
}
fmt.Fprintf(w, "Save : Your name is %s , You age is %s",name,age)
}
func redisset( w http.ResponseWriter,r *http.Request ){
key := r.FormValue("key")
value := r.FormValue("value")
if key == "" || value == "" {
fmt.Fprint(w, setform)
return
}
spec := redis.DefaultSpec().Db(0).Password("");
client, e := redis.NewSynchClientWithSpec (spec);
if e != nil { log.Println ("服务器连接有异常", e); return }
inva := []byte(value)
client.Set(key, inva);
fmt.Fprintf(w, "哥们，你输入的key %s 和value %s 已经插入到redis里面了",key,key)
}
func redisget( w http.ResponseWriter,r *http.Request ){
key := r.FormValue("key")
if key == "" {
fmt.Fprint(w, setform)
return
}
spec := redis.DefaultSpec().Db(0).Password("");
client, e := redis.NewSynchClientWithSpec (spec);
if e != nil { log.Println ("服务器连接有异常", e); return }
value, e := client.Get(key);
fmt.Fprintf(w, "哥们，你要查询的key %s 和value %s ",key,value)
}
func valueget(w http.ResponseWriter, r *http.Request) {
params := r.URL.Query()
user := params.Get("user")
fmt.Fprintf(w, "you are get user %s", user)
}
func main(){
http.HandleFunc( "/",Handler)
http.HandleFunc( "/add",Add)
http.HandleFunc( "/redisset",redisset)
http.HandleFunc( "/redisget",redisget)
http.HandleFunc( "/valueget",valueget)
s := &http.Server{
Addr: ":80",
ReadTimeout: 30 * time.Second,
WriteTimeout: 30 * time.Second,
MaxHeaderBytes: 1 << 20,
}
log.Fatal(s.ListenAndServe())
}
