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Publish-Subscribe (Pub/Sub)
Last Updated: May 27, 2026
Ashish Pratap Singh
High Priority
6 min read
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What Is Pub/Sub?
Queue vs Pub/Sub
Core Concepts
How Pub/Sub Works
Fan-Out and Filtering
Push vs Pull Delivery
Consumer Groups and Shared Subscriptions
Durability and Replay
Ordering
Delivery Failures
Schema Evolution
Common Patterns
Popular Implementations
When to Use Pub/Sub
Summary
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