Study the technical architecture and performance optimization of Jetty Extra in Java Library Jetty Extra :: Asynchronous HTTP Client
Jetty Extra :: ASYNCHRONOUS HTTP Client framework technical architecture and performance optimization
Overview:
Jetty Extra :: Asynchronous HTTP Client is a high -performance and scalable Java class library for asynchronous HTTP request processing in the application.This article will introduce the technical structure of the framework and provide some performance optimization suggestions.
Technology Architecture:
Jetty Extra :: Asynchronous HTTP Client is technically based on the Jetty HTTP client library, but it provides more powerful asynchronous functions above it.Its framework uses event -driven HTTP requests and responses to achieve efficient asynchronous treatment.
The following are the main components and functions of the framework:
1. AsynchronoushttpClient: This class is the core of the entire framework, which is used to create and manage asynchronous HTTP clients.It provides a rich API for sending HTTP requests, processing responses, setting timeout, etc.
2. Request: This class represents an HTTP request that can set the request method, URL, head information, etc.You can also add request parameters, cookies, etc.The request can be Get, Post or other HTTP methods.
3. Response: This class represents an HTTP response, which contains the status code, head information, content, etc. of the response.The response content can be obtained in the form of byte array, string or input stream.
4. HTTPClientListener: This interface defines the incident monitor of the request, such as the start of the request, the request to be completed, etc.Developers can realize the asynchronous callback processing of the interface that define the request.
Performance optimization suggestions:
1. Use the connection pool: In the high concurrency request, the use of the connection pool can effectively reduce the creation and destruction overhead of the connection.Jetty Extra :: Asynchronous HTTP Client provides support for connecting pools, and developers can improve performance by configured the connection pool size.
2. Enable HTTP Keep-Alive: The "Connection" field that sets the request header is "Keep-Alive", which can enable multiple requests to reuse the same TCP connection.This can reduce the overhead of establishing and closing connections and improve performance.
3. Set up appropriate timeout time: When sending HTTP requests, setting appropriate timeout time can avoid long -term waiting.It is recommended to set the connection timeout, read timeout, and writeout according to the actual situation.
4. Use the appropriate thread pool size: According to the number of concurrent requests and hardware resources of the application, adjust the size of the thread pool to maintain the best performance.
Example code and configuration:
The following is a sample code that uses Jetty Extra :: ASYNCHRONOUS HTTP Client to initiate asynchronous HTTP requests:
import org.eclipse.jetty.client.HttpClient;
import org.eclipse.jetty.client.api.ContentResponse;
import org.eclipse.jetty.client.api.Request;
public class AsynchronousHttpClientExample {
public static void main(String[] args) {
HttpClient httpClient = new HttpClient();
try {
httpClient.start();
Request request = httpClient.newRequest("http://example.com");
request.send(result -> {
if (result.isSucceeded()) {
ContentResponse response = result.getResponse();
System.out.println("Response status code: " + response.getStatus());
System.out.println("Response content: " + response.getContentAsString());
} else {
Throwable failure = result.getFailure();
failure.printStackTrace();
}
});
// Do other tasks while the request is being processed asynchronously
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
httpClient.stop();
} catch (Exception e) {
e.printStackTrace();
}
}
}
}
In the above example, first create an HTTPClient object and call the start () method to start the client.Then create a Request object and specify the URL to be sent.Use the send () method to send a request and process asynchronous response through the callback function.Finally, call the Stop () method to stop the client.
Related configurations can be set on the HTTPClient object, such as setting the connection pool size and timeout time.You can also set the attributes of the request object to define the request processing, such as adding head information, request parameters, etc.
in conclusion:
Jetty Extra :: Asynchronous HTTP Client provides a high -performance, functional Java library that can be used to process asynchronous HTTP requests.Through reasonable configuration and using this framework, we can achieve more efficient asynchronous request processing and improve the performance of the application.
