Streaming API Developer Guide

Getting Started with Streaming API
Code Examples
Client Connection Considerations
PushTopic Events
Generic Events
Replay Generic Streaming Events with Durable Generic Streaming
Generic Streaming Quick Start
Generic Streaming Allocations
Reference: StreamingChannel
Reference: Streaming Channel Push REST API
Monitoring Event Usage
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Generic Streaming Allocations

These default allocations apply to consumers of generic streaming.
Description Performance and Unlimited Editions Enterprise Edition Professional Edition Free Orgs
Maximum streaming channels per org 1,000 1,000 1,000 200
Maximum number of concurrent clients (subscribers) across all channels and for all event types 2,000 1,000 20 20
Maximum number of delivered event notifications within a 24-hour period, shared by all CometD clients, with Durable Generic Streaming (API version 37.0 and later) 1,000,000 200,000 100,000 10,000
Maximum number of delivered event notifications within a 24-hour period, shared by all CometD clients, with generic streaming (API version 36.0 and earlier) 100,000 100,000 100,000 10,000

Free orgs include Developer Edition orgs and trial orgs (all editions), such as partner test and demo orgs created through the Environment Hub. Sandboxes get the same allocations as their associated production orgs.

Note

If you exceed the default event delivery allocation, you receive this error: 403::Organization total events daily limit exceeded. The error is returned in the Bayeux /meta/connect channel when a CometD subscriber first connects or in an existing subscriber connection. For more information, see Streaming API Error Codes. Generic event notifications that are generated after exceeding the allocation are stored in the event bus. You can retrieve stored event messages as long as they are within the retention window of 24 hours.

If you have scenarios that warrant an increase in the number of delivered event notifications within a 24-hour period, contact Salesforce.