Leon Lee

leon lee，work with db engine

[陶瑞 TaoRay @TaoRay]

我强烈推荐大家都去买沈栋先生的《红色赌盘》这本书去读一读。如果你想了解中国的政商环境，以及为什么历史会走到今天这个地步，就不得不读。我读了两遍。最早的英文版读了一遍，后来出了中文版，我又买来读了一遍。亚马逊上就有，纸质和电子版都有。沈先生的推文也很值得关注，观���犀利，入木三分！

[周览资源 @grgerwcwetwet]

硬核高能！

强烈建议每一个想提高效率的人，看懂 埃隆·马斯克 的五步工作法。

这是他在 SpaceX 和 特斯拉 内部反复验证的方法论。

核心只有5步，但几乎能解决90%的低效问题。

很多人忙了一整天，其实都在做“无效工作”。

如果你经常感觉效率低、任务堆积、节奏混乱，看完这一套会非常清醒。

——建议收藏，反复看。

[🌞Sunny哥 @BTC__Sunny]

真心劝所有还在投资里摸爬滚打的兄弟，一定要去看《投资的底层逻辑》

这是孟岩耗时两年精心打磨的作品，绝对是我见过最实在、最接地气的投资科普内容

短短30分钟，直接把货币，经济，供需，投资的核心逻辑讲得明明白白

尤其是还在因为亏损焦虑，被贪婪恐惧左右，整天迷茫不知所措的人，看完保证茅塞顿开，思路瞬间通透！

[0x鸣人 @LuBtc888]

强烈推荐所有兄弟们，去看这部《投资的底层逻辑》。

这是孟岩花了两年时间打磨出来的，我觉得是目前最实在、最接地气的投资科普片。

只要30分钟，就能把货币、经济、供需、投资的根本逻辑彻底搞懂。

尤其是还在恐惧、贪婪、亏损、迷茫里纠结的人，看完绝对茅塞顿开，思路一下就清晰了。

[太阳闯关记 @asd3312223]

清华心理系的学生，用9分钟！教会你看懂这个世上98%的人。

此视频在抖音已经被举报下架，全程高能！！

[Zaid Humayun @redixhumayun]

Notes from the paper. The big takeaway is that io_uring isn't useful without architecting the application to make use of it.

It's remarkable how similar Turso's architecture is to the paper's recommendations.

- batch I/O operations
- batch I/O operations better (with adaptive batching). Use a counter to determine how many SQE's to submit at once
- without I/O batching, io_uring will tie you to device latency
- benefit only comes through at high I/O concurrency. Otherwise you're better off with pread/pwrite
- async execution model is a pre-requisite - coroutines/fibers that yield on I/O allow you to generate high queue depth.
- use ring-per-thread with computation and I/O colocated on same thread. pin worker threads and NIC's to the same chiplet (chiplets consist of cores). this is effectively thread-per-core with a ring-per-core.
- register buffers up front to avoid cost of validation and pinning physical pages for DMA access
- use NVMe passthrough + IOPoll under high load. Bypasses a lot of layers but IOPoll burns a CPU core.
- for network, zero-copy send + recv via io-uring will give benefit over epoll but only for messages above ~1KiB.
- use SQPoll so kernel thread continuously polls SQ for entries. burns a core but useful in high throughput I/O scenarios

[KK.aWSB @KKaWSB]

麻省理工学院教授帕特里克·温斯顿发表了一场名为“如何说话”的传奇 1 小时演讲。

它拥有超过1800万的观看量。

他的框架：
你的想法就像你的孩子
• 求职面试的五分钟法则
• 为什么笑话一开始就不好笑

15堂沟通课：

[Leon Lee @leonlee_1992]

@AqueductHQ 众所周知

[Rust Trending @RustTrending]

risinglightdb / risinglight: RisingLight is an OLAP database system for educational purpose ★241 https://t.co/UjnwApiQdo

[Immanuel Trummer @ImmanuelTrummer]

Join us for the @Cornell #Database seminar!
Time: Mondays, 1-2 PM EST
Details: https://t.co/IhHhnXblmx
Zoom: https://t.co/Hhdd2xGsJX
Schedule below.
#Databases #SQL #DataScience #ML #BigData #Retweet

[Julian Hyde @julianhyde]

XTDB has a SQL adapter powered by @ApacheCalcite. I always love to hear about databases that offer SQL as well as another language (in this case Datalog and full-text search). https://t.co/ggTTkUzbBU

[Starburst @starburstdata]

You won't want to miss @SanjMo, @daniel_abadi and @zhamakd at #Datanova 2022 in this panel discussion on the difference between #DataMesh and #DataFabric, happening Wednesday, Feb 9!

Register now: https://t.co/QC76WEULw9

[Database Community News @dbworld_]

https://t.co/bcPrAk0Vom Relational Memory: Native In-Memory Accesses on Rows and Columns. (arXiv:2109.14349v2 [cs.DB] UPDATED) #databases

[Andy Pavlo (@andypavlo.bsky.social) @andy_pavlo]

Because the pandemic won't end, @Lin_Ma_ and I are hosting another @CMUDB Vaccination DB Seminar Series - Booster Edition! https://t.co/0x53QGGFPw

All talks open to public. Youtube afterwards.
Thnx again @OtterTuneAI and Steven Moy Foundation for Keeping it Real for sponsoring.

[Leon Lee @leonlee_1992]

https://t.co/0oA79T6eEc

[Association for Computing Machinery @TheOfficialACM]

Born on this day in 1944, Jim Gray received the 1998 #ACMTuringAward for seminal contributions to database and transaction processing research and technical leadership in system implementation.

In the video, Gray shares his thoughts on database transactions and the ACID test:

[Leon Lee @leonlee_1992]

sigmod 19上关于ai优化数据库的tutorial：
https://t.co/KBhYw49T10

https://t.co/zV3Msn2qar

[Leon Lee @leonlee_1992]

this is my first test post on twitter