Make parallel http requests using raw data files

Question

I've several files containg POST body requests.

I'd like to send those requests in parallel.

Related curl command is like:

curl -s -X POST $FHIR_SERVER/ -H "Content-Type: application/fhir+json" --data "@patient-bundle-01.json"

Request bodies are files like patient-bundle-xx, where xx is a number. Currently, I'd like to send up to 1500 requests using this incremental pattern.

1. How could I send above requests using incremental pattern?
2. How could I do this in parallel?

Answer 1

With GNU Parallel:

doit() {
  bundle="$1"
  curl -s -X POST $FHIR_SERVER/ -H "Content-Type: application/fhir+json" --data "@patient-bundle-$bundle.json"
}
export -f doit
export FHIR_SERVER
seq -w 99 | parallel -j77 doit

Adjust -j77 if you do not want 77 jobs in parallel.