Gorse v0.4.0

Features

• Support MongoDB as cache_store (#406).
• Support MySQL as cache_store (#415).
• Support PostgresSQL as cache_store (#414).

Fix

• Fix typos in Swagger spec (#405) by @europaer.
• Unify timezone in ClickHouse (#417).
• Fix inserting duplicate cache rows in Postgres (#417).
• Fix item timestamp modification (#417).

Performance

• Optimize inserting users/items/feedbacks (#411).

Action	Cache	Data	Before	After
Insert 1,000 users	Redis	MySQL	75ms	38ms
Insert 1,000 items	Redis	MySQL	324ms	32ms
Insert 1,000 feedbacks	Redis	MySQL	248ms	42ms

BREAK CHANGES

• New config file specification and default values are introduced in v0.4.0 (#418).
• The write-back-delay parameter of GET /api/recommend/{user-id} requires time unit now. For example:

curl -X GET "http://172.18.0.3:8087/api/recommend/zhenghaoz?write-back-type=read&write-back-delay=10m&n=10" \
    -H "accept: application/json" \
    -H "X-API-Key: 19260817"