coret.txt

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> API: http bidding
 - double request TTL
 - get bid collection (user id, product id)
    - bidded balance sum
 - check balance query ke user get blanace (current bid - bidded balance)
    - message "wow balance invalid"
 - deduct balance
 - publish NSQ topic A: update redis
 - publish NSQ topic B: insert payment
 - return front end

> TOPIC UpdateScoreBoard (func CheckHighestBid)
 - check redis current highest bid / leaderboard
   - update current highest bid / leaderboard
 - ctx.finish (krn maxinflight 1)

> TOPIC B
 - create payment
 - create bid_collection

=============================
> CRON: stop auction
- get all auction where timewindow expired (join query)
- publish topic C

> TOPIC C: deactivate Auction
- deactivate Auction list
=============================



Redis use cases
- (new entry) ZADD --> ZADD BID [BID_VALUE] [USER_ID]
- (get top) ZREVRANGE currentBid 0 0 withscores
- no TTL; pas cron sweeping auction (deactivate) jalan, del key
- 



- user_id, sort

// seller
- get ke product (param user id)
- get auction  (param product id)

// buyer
- get bid (without param, get all)