How does Google Cloud Pub/Sub ensure message delivery reliability?

  • At-least-once Delivery
  • Exactly-once Delivery
  • Best-effort Delivery
  • No Delivery Guarantees
Understanding how Pub/Sub ensures message delivery reliability is crucial for designing resilient and fault-tolerant systems that rely on real-time messaging. Knowing the different delivery modes helps architects choose the appropriate level of reliability for their use cases.
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