Request cache configuration and performance testing method of http.Transport in Go language

http.Transport in Go language is a structure used to send HTTP requests. It provides some configuration options to optimize request performance. One of the important configuration options is request caching. This article will introduce how to configure http.Transport's request cache in Go language, and show an effective method to test request performance.

1. Request cache configuration of http.Transport

In the Go language, you can configure the request cache by modifying the MaxIdleConnsPerHost, MaxIdleConns and MaxConnsPerHost fields of http.Transport. These fields represent the maximum number of idle connections per target host, the maximum number of idle connections across all hosts, and the maximum number of active connections per target host.

The specific configuration method is as follows:

transport := &http.Transport{
    MaxIdleConnsPerHost:   10,
    MaxIdleConns:          100,
    MaxConnsPerHost:       100,
}
client := &http.Client{Transport: transport}

The above code will create an http.Transport object, its maximum number of idle connections for each target host is 10, and the maximum number of idle connections for all hosts The number of connections is 100 and the maximum number of active connections per target host is 100. Then, pass the http.Transport object to the Transport field of http.Client to create an http.Client object with request cache configuration.

2. Performance testing method

In order to test the request performance, we can use the go-wrk tool. go-wrk is a concurrent HTTP stress testing tool based on the Go language. It can simulate multiple concurrent requests and count key indicators such as the response time of the requests.

First, we need to install go-wrk. You can use the following command to install:

go get -u github.com/tsliwowicz/go-wrk

After the installation is complete, we can use go-wrk to test the HTTP request performance of the Go language. The following are some commonly used go-wrk command examples:

1. Test the performance of GET requests:

go-wrk -c 100 -d 10s -T "application/json" -H "Authorization: Bearer TOKEN" "http://localhost:8080/api"

The above command will simulate 100 concurrent requests with a duration of 10 seconds , send a GET request to "http://localhost:8080/api", and specify the Content-Type of the request header as "application/json", and attach the Authorization header.

2. Test the performance of POST requests:

go-wrk -c 100 -d 10s -T "application/json" -H "Authorization: Bearer TOKEN" -M POST -B '{"title": "Hello", "body": "World"}' "http://localhost:8080/api"

The above command will simulate 100 concurrent requests, with a duration of 10 seconds, and send POST requests to "http://localhost :8080/api", and specify the Content-Type of the request header as "application/json", and attach the Authorization header and request body.

By using the go-wrk tool, we can easily test the impact of the request cache configuration of http.Transport in the Go language on request performance.

3. Summary

This article introduces how to configure http.Transport request cache in Go language, and shows an effective method to test request performance. By properly configuring the request cache of http.Transport, the HTTP request performance in the Go language can be improved. At the same time, by using the go-wrk tool for performance testing, you can better evaluate request performance and optimize performance.

The above is an introduction to the request cache configuration and performance testing method of http.Transport in Go language. I hope it will be helpful to everyone.

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