Why the area is outside the page
Outside is what survives. Surviving is the claim, and surviving is what a reload test proves.
The one thing never stored
A secret. A secret in a store is a secret a reader of the store can read.
Storage as a keyed area
A page is thrown away on reload. Storage that lives in the page is thrown away too, and the area is why a choice survives.
What you will see
refuse secret stored. A store is read by a reader.
About 1 min of reading
Try It
Prove a store survives
1
Name the area
printf 'area=mysite\n' > /tmp/a.txt; cat /tmp/a.txt
Before you run it, say out loud what it will print. Then open the answer.
What it prints
One name. One name is what keeps two extensions apart.
2
List the keys
printf 'hidden\nhidden\nhidden\n' | sort -u | wc -l
Before you run it, say out loud what it will print. Then open the answer.
What it prints
1. A list is what a reader checks for a key never set.
3
Refuse a secret
printf 'key=token\n' | awk '{print ($1=="key") ? "refuse secret stored" : "ok"}'
Before you run it, say out loud what it will print. Then open the answer.
What it prints
refuse secret stored. A store is read by a reader.
Data Flow
A choice to a surviving area
1
The area is named by the extension
↓
2
The keys are written as a list
↓
3
A choice is written to a key
↓
4
A reload reads the same area
Why this works
Examples
The area is named by the extension
One name for one extension. One name is what makes two extensions not overwrite each other.
The key is written
The key is a name in a list. A list is what a reader checks for a key that was never set.
The page is never the store
A page is a place a reader changes. A store that is a page is a store that can be changed by the page.
Words this lesson uses
Each one is defined here on this site. Open the entry for the full definition and the other words it points at.
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