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Yummy Feature Server

The yummy feature server is based on the rust implementation wrapped by pyo3 thus you don’t need to install rust environment and you can simply run it using command line:

yummy serve -h 0.0.0.0 -p 6566 -f feature_store.yaml

Rust feature server have been implemented using Actix server. The server is fully compatible with feast feature server and is blazing fast (~1ms - full benchmark will delivered soon). You can use it with the features materialized with Feast to online store. Currently Redis online store implementation is available and http protocol is supported.

The payload is fully compatible with Feast server:

Example request/response:

Request with features list:

{          
  "features": [
                "driver_hourly_stats:conv_rate",
                "driver_hourly_stats:acc_rate",
                "driver_hourly_stats:avg_daily_trips",                      
            ],
  "entities": {"driver_id": [1001,1002,1003,1004,1005]},
  "full_feature_names": true,
"

Request with feature service:

{
  "feature_service": "driver_activity_basic",
  "entities": {"driver_id": [1001,1002,1003,1004,1005]},
  "full_feature_names": true,
}

Example response:

{"metadata": {"feature_names": ["driver_id",
   "driver_hourly_stats__conv_rate",
   "driver_hourly_stats__acc_rate",
   "driver_hourly_stats__avg_daily_trips"]},
 "results": [{"values": [1001, 1002, 1003, 1004, 1005],
   "statuses": ["PRESENT", "PRESENT", "PRESENT", "PRESENT", "PRESENT"],
   "event_timestamps": ["2022-10-04T22:46:16",
    "2022-10-04T22:46:16",
    "2022-10-04T22:46:16",
    "2022-10-04T22:46:16",
    "2022-10-04T22:46:16"]},
  {"values": [0.44467267, null, 0.775576, 0.719485, null],
   "statuses": ["PRESENT", "PRESENT", "PRESENT", "PRESENT", "PRESENT"],
   "event_timestamps": ["2022-10-04T22:46:16",
    "2022-10-04T22:46:16",
    "2022-10-04T22:46:16",
    "2022-10-04T22:46:16",
    "2022-10-04T22:46:16"]},
  {"values": [0.36920926, null, 0.8855987, 0.09924329, null],
   "statuses": ["PRESENT", "PRESENT", "PRESENT", "PRESENT", "PRESENT"],
   "event_timestamps": ["2022-10-04T22:46:16",
    "2022-10-04T22:46:16",
    "2022-10-04T22:46:16",
    "2022-10-04T22:46:16",
    "2022-10-04T22:46:16"]},
  {"values": [821, null, 381, 587, null],
   "statuses": ["PRESENT", "PRESENT", "PRESENT", "PRESENT", "PRESENT"],
   "event_timestamps": ["2022-10-04T22:46:16",
    "2022-10-04T22:46:16",
    "2022-10-04T22:46:16",
    "2022-10-04T22:46:16",
    "2022-10-04T22:46:16"]}]}