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Platform Event Bus

Development🟢 Beginner

Definition

The Salesforce event streaming infrastructure that delivers platform events and Change Data Capture events to subscribers in near real-time, using a publish-subscribe model based on CometD/gRPC protocols.

Real-World Example

When a Salesforce developer at CodeBridge needs to streamline operations, they turn to Platform Event Bus to create a robust integration between Salesforce and an external system. Using Platform Event Bus, the developer builds an efficient solution that syncs data in near real-time, handles error scenarios gracefully, and includes detailed logging for troubleshooting.

Why Platform Event Bus Matters

The Platform Event Bus is the Salesforce event streaming infrastructure that delivers platform events and Change Data Capture events to subscribers in near real-time, using a publish-subscribe model based on CometD/gRPC protocols. Publishers (Salesforce records, Apex code, or external systems) emit events, and subscribers (Apex triggers, processes, flows, or external systems) receive them. The bus handles delivery, retention, and replay.

The Platform Event Bus is foundational to event-driven architecture in Salesforce. Compared to traditional polling integrations (where external systems repeatedly check Salesforce for changes), event-based integration is more efficient and faster. Mature integration architectures use Platform Events and CDC for change notifications, with the Platform Event Bus as the underlying delivery mechanism. The bus supports replay (reading past events), making it possible to recover after subscriber outages.

How Organizations Use Platform Event Bus

  • TerraForm TechBuilt event-driven integrations using Platform Events and CDC, with the Platform Event Bus as the delivery mechanism.
  • Quantum LabsUses event replay to recover from subscriber outages, ensuring no events are lost.
  • CodeBridgeTreats the Platform Event Bus as foundational to modern Salesforce integration architecture.

🧠 Test Your Knowledge

1. What is the Platform Event Bus?

2. What protocols does it support?

3. What's a key feature?

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