OomStore

Lightweight and Fast Feature Store Powered by Go

Quickstart · Architecture · Benchmark

Overview

oomstore allows you to:

• Define features with YAML.
• Store features in databases of choice.
• Retrieve features for both online serving and offline training, fast.

Please see our docs for more details.

Features

oomstore's edges:

• 🍼 Simple. Being serverless and CLI-friendly, users can be productive in hours, not months.
• 🔌 Composable. We support your preferred databases of choice.
• ⚡ Fast. Benchmark shows oomstore performs QPS > 50k and latency < 0.3 ms with Redis.
• 🌊 Streaming. We support streaming features to ensure your predictions are up-to-date.

Architecture

You can interact with oomstore with CLI, Go API or Python API. See Architecture for more details.

Quickstart

1. Install oomcli following the guide.

2. oomcli init to initialize oomstore. Make sure there is a ~/.config/oomstore/config.yaml as below.

online-store:
  sqlite:
    db-file: /tmp/oomstore.db

offline-store:
  sqlite:
    db-file: /tmp/oomstore.db

metadata-store:
  sqlite:
    db-file: /tmp/oomstore.db

1. oomcli apply -f config.yaml to register metadata. See config.yaml below.

kind: Entity
name: user
description: 'user ID'
groups:
- name: account
  category: batch
  description: 'user account info'
  features:
  - name: state
    value-type: string
  - name: credit_score
    value-type: int64
  - name: account_age_days
    value-type: int64
  - name: has_2fa_installed
    value-type: bool
- name: transaction_stats
  category: batch
  description: 'user transaction statistics'
  features:
  - name: transaction_count_7d
    value-type: int64
  - name: transaction_count_30d
    value-type: int64

1. Import CSV data to Offline Store.

oomcli import \
  --group account \
  --input-file account.csv \
  --description 'sample account data'
oomcli import \
  --group transaction_stats \
  --input-file transaction_stats.csv \
  --description 'sample transaction stat data'

1. Sync data from Offline Store to Online Store.

oomcli sync --revision-id 1
oomcli sync --revision-id 2

1. Fetch features by key.

oomcli get online \
  --entity-key 1006 \
  --feature account.state,account.credit_score,account.account_age_days,account.has_2fa_installed,transaction_stats.transaction_count_7d,transaction_stats.transaction_count_30d

+------+---------------+----------------------+--------------------------+---------------------------+----------------------------------------+-----------------------------------------+
| user | account.state | account.credit_score | account.account_age_days | account.has_2fa_installed | transaction_stats.transaction_count_7d | transaction_stats.transaction_count_30d |
+------+---------------+----------------------+--------------------------+---------------------------+----------------------------------------+-----------------------------------------+
| 1006 | Louisiana     |                  710 |                       32 | false                     |                                      8 |                                      22 |
+------+---------------+----------------------+--------------------------+---------------------------+----------------------------------------+-----------------------------------------+

1. Generate training datasets via point-in-time join.

oomcli join \
	--feature account.state,account.credit_score,account.account_age_days,account.has_2fa_installed,transaction_stats.transaction_count_7d,transaction_stats.transaction_count_30d \
	--input-file label.csv

+------------+------------+---------------+----------------------+--------------------------+---------------------------+----------------------------------------+-----------------------------------------+
| entity_key | unix_milli | account.state | account.credit_score | account.account_age_days | account.has_2fa_installed | transaction_stats.transaction_count_7d | transaction_stats.transaction_count_30d |
+------------+------------+---------------+----------------------+--------------------------+---------------------------+----------------------------------------+-----------------------------------------+
|       1002 | 1950236233 | Hawaii        |                  625 |                      861 | true                      |                                     11 |                                      36 |
|       1003 | 1950411318 | Arkansas      |                  730 |                      958 | false                     |                                      0 |                                      16 |
|       1004 | 1950653614 | Louisiana     |                  610 |                     1570 | false                     |                                     12 |                                      26 |
|       1005 | 1950166137 | South Dakota  |                  635 |                     1953 | false                     |                                      7 |                                      30 |
|       1006 | 1950403162 | Louisiana     |                  710 |                       32 | false                     |                                      8 |                                      22 |
|       1007 | 1950160030 | New Mexico    |                  645 |                       37 | true                      |                                      5 |                                      40 |
|       1008 | 1950274859 | Nevada        |                  735 |                     1627 | false                     |                                     12 |                                      51 |
|       1009 | 1949958846 | Kentucky      |                  650 |                       88 | true                      |                                     11 |                                      23 |
|       1010 | 1949920686 | Delaware      |                  680 |                     1687 | false                     |                                      2 |                                      39 |
+------------+------------+---------------+----------------------+--------------------------+---------------------------+----------------------------------------+-----------------------------------------+

See Quickstart for more complete details.

Supported Databases

Online Store

• Amazon DynamoDB
• Redis
• TiKV
• Cassandra
• PostgreSQL
• MySQL
• TiDB
• SQLite

Offline Store

• Snowflake
• Amazon Redshift
• Google BigQuery
• PostgreSQL
• MySQL
• TiDB
• SQLite

Metadata Store

• PostgreSQL
• MySQL
• TiDB
• SQLite

Community

Feel free to join the community for questions and requests!