January 2024
Intermediate to advanced
472 pages
15h 11m
English
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14 Design a text messaging app
This chapter covers
- Designing an app for billions of clients to send short messages
- Considering approaches that trade off latency vs. cost
- Designing for fault-tolerance
Let’s design a text messaging app, a system for 100K users to send messages to each other within seconds. Do not consider video or audio chat. Users send messages at an unpredictable rate, so our system should be able to handle these traffic surges. This is the first example system in this book that considers exactly-once delivery. Messages should not be lost, nor should they be sent more than once.
14.1 Requirements
After some discussion, we determined the following functional requirements:
-
Real-time or eventually-consistent? Consider either ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.