github.com/chillum/httpstress (go): CLI utility for stress testing of HTTP servers with many concurrent connections  Usage:  Options:  Example:  Returns 0 if no errors, 1 if some requests failed, 2 on kill and 3 in case of invalid options.  Prints elapsed time and error count for each URL to stdout (if any; does not count successful attempts). Usage and runtime errors go to stderr.  Output is JSON-formatted. Example:  It follows HTTP redirects. Non-200 HTTP return code is an error.  Be sure to set `ulimit -n` on Unix systems high enough.
Keywords: cli-utilities|load-testing|stress-test