Links: 102 AWS DVA Index
- In case of asynchronous invocations and event mappers it was very hard for us to see if they had failed or succeeded.
- The idea is to send the result of an asynchronous invocation or failure of an event mapper somewhere.
- For asynchronous invocations we can define destinations for both successful and failed events.
- Destinations for asynchronous invocations are:
- EventBridge bus
AWS recommends you use destinations instead of DLQ now (but both can be used at the same time)
- They are newer
- DLQs only allows you to only send failures of asynchronous invocations to SQS or SNS
Event Source Mapping¶
- For discarded event batches
- In case of failure instead of blocking the entire batch we send them to destinations
If you have lambda reading from an SQS queue you can either set up a DLQ or setup a destination.
Last updated: 2022-05-24