dropshipping-test

Business context

Client sending some request to API We want to process request asynchronously with some throtling and pre-conditions Event examples:

• Listing an item
  • Upload image to CDN
  • Generate similarity vector
  • List on core platform
• Update item
  • Pre-condition: item must be listed
• Delete an item
  • Pre-condition: item must be listed How could we implement this? What's data model based on example of item listing.

Task

We have defined events and processor
In main class present sequential processing of events

V1 updates

• Pre-condition for event
  • Photo upload
    • Process only if state == pending
  • Item creation
    • Process only if state == photo_uploaded OR photo with same name was already uploaded
• 5 items limit for listing process.