小编Mut*_*ace的帖子

我想知道如果我创建一个OkHttpClient实例来服务我的"整个Android应用程序",是否会出现任何性能瓶颈或问题.即在我的Application类中,我创建了一个静态公共变量,它将包含一个OkHttpClient实例,每当我需要执行一个http请求时,我基本上构建一个请求对象,然后使用创建的okhttpclient实例来触发请求.

代码是这样的

public class MyApplication extends Application {
    public static OkHttpClient httpClient;

    @Override
    public void onCreate() {
        super.onCreate();

        httpClient = new OkHttpClient();
    }

}

// Making request 1
Request request1 = new Request.Builder().url(ENDPOINT).build();
Response response = MyApplication.httpClient.newCall(request1).execute();

// Making request 2
Request request2 = new Request.Builder().url(ENDPOINT).build();
Response response = MyApplication.httpClient.newCall(request2).execute();

我正在进行一些系统测试,并期待MySQL(5.7.21)的空结果,但对获得结果感到惊讶.

我的交易表看起来像这样:

Column        Data type
----------------------------
id           | INT
fullnames    | VARCHAR(40)
---------------------------

我有一些记录

--------------------------------
id           | fullnames
--------------------------------
20           | Mutinda Boniface
21           | Boniface M
22           | Some-other Guy
-------------------------------

我的示例查询:

select * from transactions where id = "20"; -- gives me 1 record which is fine
select * from transactions where id = 20; -- gives me 1 record - FINE as well

现在,当我尝试这些时,它变得有趣:

select * from transactions where id = "20xxx"; -- gives me 1 record …