Add StructuralConcurrency example

[jabrena]

• https://github.com/jamesward/easyracer/blob/main/java-loom/src/main/java/Main.java
• https://jamesward.github.io/easyracer/lambdaconf_2024.html?view=pdf

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jamesward.github.io_easyracer_lambdaconf_2024.html_view=pdf.pdf

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A scenario server validates the implementations of 10 scenarios:

Race 2 concurrent requests

GET /1 The winner returns a 200 response with a body containing right

Race 2 concurrent requests, where one produces a connection error

GET /2 The winner returns a 200 response with a body containing right

Race 10,000 concurrent requests

GET /3 The winner returns a 200 response with a body containing right

Race 2 concurrent requests but 1 of them should have a 1 second timeout

GET /4 The winner returns a 200 response with a body containing right

Race 2 concurrent requests where a non-200 response is a loser

GET /5 The winner returns a 200 response with a body containing right

Race 3 concurrent requests where a non-200 response is a loser

GET /6 The winner returns a 200 response with a body containing right

Start a request, wait at least 3 seconds then start a second request (hedging)

GET /7 The winner returns a 200 response with a body containing right

Race 2 concurrent requests that "use" a resource which is obtained and released through other requests. The "use" request can return a non-20x request, in which case it is not a winner.

GET /8?open GET /8?use= GET /8?close= The winner returns a 200 response with a body containing right

Make 10 concurrent requests where 5 return a 200 response with a letter

GET /9 When assembled in order of when they responded, form the "right" answer

[jabrena]

• https://chatgpt.com/share/f128d346-e420-4173-b8d8-29d206ff31e3

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Move this issue to functional roseta stone

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• https://docs.oracle.com/en/java/javase/21/core/structured-concurrency.html