Tinker10:08. Line up; every warehouse sells from its own count.North 5/1, East 5/1, West 4/0 · 1 sale
Chapter 3 of 7
The link goes down
Two buyers at once is rare. A cut line is not: one morning the phone line to West goes down for eight minutes, and West keeps taking orders.
This chapter: When the warehouses can’t talk, should West keep selling?
About this chapter
You will learn
- A partition splits the copies into sides that can’t talk
- Each side can stay available or stay consistent, not both
- The CAP theorem, in one picture
Words you’ll meet
- Partition
- A break in the network: the copies on each side can’t reach each other.
- Available
- Every request gets an answer, even while the line is down.
- Consistent
- Every answer agrees with the newest change, as if there were one copy.
Step 1 of 5
At 10:06 the line to West goes down: a . Each side still takes orders.
Cut the line.