user-segmentation-service

It is required to implement a service that stores the user and the segments to which he belongs (creating, changing, deleting segments, as well as adding and deleting users in the segment).

To start the service:

• Rename .env.example to .env, specify all the necessary variables
• Run the file migrations/create_tables.sql to create all the necessary tables.

Launch the application:

go run cmd/main.go

Usage

Basic HTTP requests to the server:

POST: /segment/ - add segment

{
	"slug": "AVITO_VOICE_MESSAGES"
}

The server will return the same response.

DELETE: /segment/ - delete segment

{
	"slug": "AVITO_VOICE_MESSAGES"
}

POST: /user/

For adding and removing users to segments.

{
	"user_id": "1000",
	"add_segments": ["SEGMENT_1", "SEGMENT_2"],
	"delete_segments": ["SEGMENT_3"]
}

GET: /user/

Returns user segments.

{
	"user_id": "1000"
}

Response:

["SEGMENT_1", "SEGMENT_2"]

POST: /user/

An example of using the time limiter from the second task. The user with this ID will be added to the specified segment with TTL:

{
	"user_id": "1000",
	"add_segments": ["SEGMENT_1"],
	"delete_segments": [],
	"ttl": 2
}

The deadline in this JSON request is set to 2 minutes. To make sure your data disappears after the expiration date, use:

GET: /user/

{
	"user_id": "1000"
}

Endpoints

• POST: /segment/ - adding segment by slug

• DELETE: /segment/ - delete segment by slug

• GET: /user/ - get all segments by userId

• POST: /user/ - add and delete user from segments

TODO

• Segment creation method. Accepts a slug (name) of a segment.
• Segment removal method. Accepts a slug (name) of a segment.
• Method for adding a user to a segment. Receives a list of slugs (names of segments that need to be added to the user, a list of slugs (names) of segments that need to be removed from the user, user id.
• Method for obtaining active user segments. Accepts user id as input.

✅ Additional task 2

There are situations when we need to add a user to an experiment for a limited period. For example, give a discount for only 2 days.

Task: implement the ability to set TTL (time for automatically removing a user from a segment)

Example: We want the user to be in a segment for 2 days - for this, in the method for adding segments to the user, we pass the time the user was removed from the segment as a separate field