IT討論區(174) - Become a professional programmer

1001 回覆
4 Like 3 Dislike
2022-09-30 23:18:39
冇人講BAU好事嚟 成個term不倫不類
2022-10-01 00:16:00
2022-10-01 00:21:56
你問緊邊個party? Exchange? Clearing? Broker? Participant? Data vendor?
你用黎做啲咩?
你講緊咩程度既down? 咩程度既persist? 咩程度既critical?

Btw呢個世界有好多野其實唔係咁critical 人命一條都係幾十萬至幾百萬 如果一野死好多人咁個均價就更低
好多時大家諗既persistent程度係over engineering左 與其用搞咁多野 不如由佢fail
唔好話咩由佢fail係妥協instead of正確 由佢fail然後坐低傾點收科先係低成本既正確做法
2022-10-01 00:23:15
咩係BAU。。。
2022-10-01 00:33:47
BAU定HBU
2022-10-01 01:58:51
Business as usual
2022-10-01 05:17:48
hft participant ,market maker 個個
我主要 concern 係有冇得做到 sql 比搞 strategy 嘅去 query
你當我去炒 crypto / 美股 realtime api 個種
我差咗一下好似類似 clickhouse 有得諗?再唔係就要用返 sqlite 但係傳統 sql 好似係頂唔到 olap query?
2022-10-01 06:18:20
有無inhouse SWE巴打平時番工都係搞掂個task就算
唔會點自己研究埋個framework / 學其他野
2022-10-01 06:30:31
其實之前都聽過有巴打咁形容
但點解會叫叫水嘢
2022-10-01 06:31:31
研究下唔使即刻做下個task 住
咁一定會研究啦
唔通做啲task 好開心咩
2022-10-01 09:09:29
2022-10-01 09:32:07
sqlite有in memory
2022-10-01 09:54:42
我睇文話 row based datastore 有機會insert delay?
2022-10-01 10:23:27
有 仲要公司用舊tech 遲d轉唔返出去
2022-10-01 10:25:43
每逢轉工先會睇返公司glassdoor 其他人搵幾多同多唔多人數臭公司
2022-10-01 10:30:23
glassdoor 人工同數臭comment 最可靠
好評如果係假會有數臭comment 踢爆
2022-10-01 11:38:01
你個use case係點

time T insert
time T+1 select sum (col) from table
咁?
2022-10-01 12:23:51
佢意思係 sqlite 會頂唔到大 insert load
我都唔清楚負責寫 strategy 嘅 friend 會想點寫
2022-10-01 12:37:06
我明你想點
你基本上想寫sql query一個in memory array

用numpy仲好
2022-10-01 12:46:33
numpy indexing 唔會 O(n) 嗎?
我手上諗到嘅 option 有
native go array + b-tree indexing
https://github.com/hashicorp/go-memdb
clickhouse
sqlite memory

我諗緊 column store vs row store 個個問題
我個 usecase 快係好重要的
唔使 transaction 都得
2022-10-01 12:47:26
所以想問下真 hft 會用咩搞
2022-10-01 12:56:03
fpga
2022-10-01 12:57:04
返工做木椅 面試造火箭
2022-10-01 12:59:41
認真你呢堆頂盡都係SIMD
唔夠GPU揪
2022-10-01 13:04:59
你個strategy要食啲咩
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