Curl multiple requests parallel

1. How do I run multiple curl requests in parallel?
2. How do you pass multiple headers in curl?
3. Is curl synchronous or asynchronous?
4. Does xargs run in parallel?
5. Which server can process multiple requests at a time?
6. Can a server handles multiple processes concurrently?
7. Can I have 2 Authorization headers?
8. Can you have multiple accept headers?
9. Does Curl automatically add headers?
10. Does xargs run in parallel?
11. How do I create a parallel HTTP request?
12. Which loops can be run in parallel?
13. Can you parallelize a for loop?
14. What can I use instead of xargs?

How do I run multiple curl requests in parallel?

The solution to this is to use the xargs command as shown alongside the curl command. The -P flag denotes the number of requests in parallel. The section <(printf '%s\n' 1.. 10) prints out the numbers 1 – 10 and causes the curl command to run 10 times with 5 requests running in parallel.

How do you pass multiple headers in curl?

To pass multiple headers in a curl request you simply add additional -H or --header to your curl command.

Is curl synchronous or asynchronous?

Short answer is no it isn't asynchronous. Longer answer is "Not unless you wrote the backend yourself to do so." If you're using XHR, each request is going to have a different worker thread on the backend which means no request should block any other, barring hitting process and memory limits.

Does xargs run in parallel?

xargs will run the first two commands in parallel, and then whenever one of them terminates, it will start another one, until the entire job is done. The same idea can be generalized to as many processors as you have handy. It also generalizes to other resources besides processors.

Which server can process multiple requests at a time?

A concurrent server handles multiple clients at the same time.

Can a server handles multiple processes concurrently?

Some server processes can initiate multiple processes simultaneously to accomplish the task.

Can I have 2 Authorization headers?

As per RFC7230 (section 3.2. 2), API Gateway should not send multiple Authorization headers, it should send one headers with concatenated values ("Authorization : Bearer XXXXX, Basic YYYYY").

Can you have multiple accept headers?

The Accept header field can specify multiple acceptable content types, either by listing them (application/json, text/html, text/xml, and so on), or by using wildcards (text/*).

Does Curl automatically add headers?

Curl by default adds headers such as Content-type and User-agent .

Does xargs run in parallel?

xargs will run the first two commands in parallel, and then whenever one of them terminates, it will start another one, until the entire job is done. The same idea can be generalized to as many processors as you have handy. It also generalizes to other resources besides processors.

How do I create a parallel HTTP request?

In parallel HTTP request, more than one requests are sent by a client to the server and server processes the request and response back in parallel, making this technique more time-efficient and reducing resource utilization as well.

Which loops can be run in parallel?

A parallel for loop is a for loop in which the statements in the loop can be run in parallel: on separate cores, processors or threads.

Can you parallelize a for loop?

You can convert a for-loop to be parallel using the multiprocessing. Pool class. In this tutorial you will discover how to convert a for-loop to be parallel using the multiprocessing pool.

What can I use instead of xargs?

GNU parallel is an alternative to xargs that is designed to have the same options, but is line-oriented. Thus, using GNU Parallel instead, the above would work as expected.