Durable Lambda Functions

[tycen-tsn]

I know it was just announced, but are there plans to add in Zappa support for durable functions?

[ismaildasci]

aws durable lambda functions were announced recently and allow workflows that can pause and resume.

for zappa integration, there are a few considerations:

1. zappa currently deploys standard lambda functions. durable functions require aws step functions or the new durable execution service.

2. as a workaround until zappa adds native support, you can:

   • use zappa for your api/web handlers as normal
   • create step functions separately using serverless framework or sam
   • call step functions from your zappa handlers

3. for long-running tasks that need durability, consider alternatives:

   • sqs with zappa for async task processing
   • aws step functions created outside zappa
   • celery with elasticache/redis

4. if you want to request this feature, open an issue on the zappa github repo. the maintainers can evaluate adding step functions integration.

5. for simple durability (surviving lambda restarts), you can use:

   • dynamodb for state persistence
   • s3 for checkpointing
   • parameter store for configuration

the challenge is zappa is primarily a deployment tool for wsgi/asgi apps. orchestration features like durable functions would need significant architecture changes.

what specific use case do you need durability for? there might be a simpler solution depending on your requirements.