# Introduction
In this PR we're migrating the serverless function service that was
using the SF repo directly to the v2 build and runner.
The whole serverless engine now deals with flat entities only
## Resolvers
Refactored the resolvers ( serverlessFunction, route, database and cron
trigger) :
- return types to `dto`
- Standardized the flat to dto transpilation within the resolvers
- Find and findMany passing by the cached data
## Services
Refactored the services ( serverlessFunction, route, database and cron
trigger) :
- return type to be `flat`
- always calling v2 and computing cache
## New additional caches
- application variables ( cf
https://github.com/twentyhq/core-team-issues/issues/2116 )
- serverless function layer
## What to test:
- CRUD ( database trigger ✅ , route trigger, cron trigger, serverless
function through workflows ✅ )
- Duplicating a workflow with a serverless function code node ✅
## Concerns
We need to implement the cron that will hard delete soft deleted s3
serverless functions, not in this PR though ( cf
https://github.com/twentyhq/twenty/pull/17285#discussion_r2709168570 and
https://github.com/twentyhq/core-team-issues/issues/2118 )
