Can Java cold start?

A Helidon based HTTP service

In this installment of the series we are using examples running on Helidon to cold start the HTTP service.

If you want to run the experiment yourself you can download the example.tar.gz file.

Example	Process start	Process ready	Process total
Example 30 - Helidon SE	76 ms	243 ms	319 ms
Example 31 - Helidon MP	581 ms	285 ms	866 ms
Example 32 - Helidon SE (Docker)	396 ms	601 ms	997 ms
Example 33 - Helidon MP (Docker)	1,764 ms	423 ms	2,187 ms

These numbers were collected on a Mac Mini M1 with 16GB using Java 17

Process start - the amount of time it takes before the JVM is executing your code.
Process ready time - the amount of time it takes for the HTTP server to be ready for processing.
Process total - the total time (process start + process ready).

If you have any comments, suggestions or concerns, please start a discussion on GitHub.

Posted October 28th, 2021