Tinker09:00
09:00. Slowest page so far: 1 min.0 in line · 1 busy · 0 done
Chapter 1 of 7
Waiting at the till
Larkspur’s spring sale is about to open. Today the till handles each order right there: book the courier, print the label, email, then answer.
This chapter: What does a customer see when the till does all the work?
About this chapter
You will learn
- Work done inside a request makes the customer wait
- A busy till makes everyone behind wait too
- Why slow work belongs somewhere else
Words you’ll meet
- Request
- What a customer’s browser sends when they press Buy; the page waits for the answer.
- Inline
- Done inside the request, before the answer goes back.
Step 1 of 5
Each order is a . The till books the courier, prints and emails , then answers.
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