DeepFrontend
Learning Paths
Practice
System Design & DS
Design Studio
Data Structures Curriculum
Real-World Case Studies
Careers
Job Board
Resume Builder
Blog
Sign in
Search
⌘K
Go Pro
Loading compiler resources...
System Design Quiz Practice
Active Recall Drill Session
← Exit Session
Question 1 of 1
medium
System Design
A signup API synchronously sends a welcome email before responding to the client, and the email provider is briefly down. What's the effect, and what's the queue-based fix?
A
No effect — email sending never impacts the response
B
Every signup request hangs or fails while the email provider is down, even though the actual signup succeeded; enqueuing the email-send as a message and responding immediately decouples the two
C
The database write fails
D
The load balancer routes around the problem automatically
Check Answer