Creating a quick microservice Pub

The fastest way to create a micro-service is to define a mock for a Message:

$mock first.service (name ?= "Harry") => (greeting="Hello "+name)

Which, unescaped, looks like this:

0 $mock:: first.service (name)
   . (greeting=("Hello " + name))

Done! As soon as you save the edited topic, you can invoke it like:


And receive a JSON result (note the value for "greeting" and ignore the errors for now):

{"values":{"greeting":"Hello Jane"},"failureCount":"0","errors":["Can't find the spec for first.service"]}

Or get just the resulting value:


And receive the resulting value:

Hello Jane

Note the reference to the current topic in the URL specs.Topic:Creating_a_quick_microservice.

How's that for simple ?

Fiddle with this right now

Go on, try it yourself: click this fiddle now and change the "Hello " to "Hi " and then just re-run the REST call (or click again on this link).

There's only one catch: when changing your fiddle, to see the result, you'll need to use the SketchMode++ so use this URL to call the fiddle:


Remember that you can't save in this website - you'll need to create a new reactor from the main page if you want to create some proper stories!

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By: Razie | 2016-06-22 .. 2022-10-22 | Tags: academy , dsl

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