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time.js

Node.js script to measure the start time of an application without having to modicfy application code.

The application is spawned in a background process and a URL is tested until a HTTP 200 response is returned. The time taken to spawn the process and a HTTP 200 reponse is measured and reported to the terminal.

Build

Before the script is run for the first time, the required node.js modules require installing.


$ npm install request

Running

To measure the start time for an application invoke the script;

$ node time.js "java -jar /path/to/appication-runner.jar"  "http://localhost:8080/hello"

where;

"java -jar /path/to/application-runner.jar" - The command to start the application being tested

"http://localhost:8080/hello" - the URL to test.