This topic describes the limits of EventBridge. To prevent application exceptions, do not exceed the limits when you use EventBridge.
The following table describes the limits of EventBridge.
Category | Item | Description |
---|---|---|
Event bus | Total number of default event buses | A maximum of one default event bus is allowed. |
Total number of custom event buses | A maximum of 10 custom event buses are allowed. | |
Number of event rules for an event bus | A maximum of 10 event rules are allowed for an event bus. | |
Name of an event bus |
|
|
Frequency of calling the PutEvents API operation | A maximum of 3,000 queries per second (QPS) are allowed. | |
Event rule | Event targets of an event rule |
|
Pattern of an event rule | In the stringExpression pattern, each field can contain up to five expressions in the map data structure. | |
Name of an event rule |
|
|
Transformation of the event content |
|
|
Event | Event message |
|
Event field |
|
|
Schema | Schema name |
|
Number of schema versions | A maximum of 1,000 schema versions are allowed. | |
Event stream | Event stream name |
|
Number of event streams | A maximum of 20 event streams are allowed. | |
Pattern of an event rule | In the stringExpression pattern, each field can contain up to five expressions in the map data structure. | |
Transformation of the event content |
|
|
Event source | Name of an event source |
|
Note The number of event buses, event rules, and event streams in the preceding table are
limits for a single region.