Rule engine and trigger framework

The core idea

Rule engine and trigger framework is lesson 15.03 in the module "Workflows, schedulers, and contention". These notes are a placeholder: replace this file with your own writing and the page will render it with the course styling.

The shape that works well for a lesson is short. Open with the one idea a reader should leave with, show where it bites in a real system, name the tradeoff, and finish with the default this course recommends.

Where it shows up

Every module in this course builds toward a system you could actually run. Use this section to connect the idea to that system: what breaks without it, and what it costs to add.

What decision does this force?

State the decision in one sentence. Then give the reader the two or three answers that are usually on the table.

What is the default?

Say which answer the course picks for the running example, and why it is the safe starting point.

What to check

When you see this	Ask	Default for this version
A number without a unit	What is it measured against?	Restate it per second, per request, or per byte
A component added "just in case"	Which requirement asked for it?	Remove it until a requirement does
A promise about speed	How would a test check it?	Turn it into a target with a percentile

Engineering note. Keep placeholder text like this out of a published lesson. The point of the template is the structure, not the words.

Where it leads

The next lesson picks up from here. Link forward and back so the module reads as one argument rather than a list of topics.