F家过经(保佑h1b transfer)

松鼠山 发表于 2020-5-6 12:49
请问什么叫  要精简 让面试官得到想要的所有signal
就是回答得简洁吗？那没法把一个故事讲完整啊
另外  ...

恩 BQ最重要的signal， 特别对于E5以上， 是两个能力
1. ability to lead the team
2. ability to resolve conflicts
所以你给出的例子需要反映出这两个能力

既要完整，也要简洁，这就是难得地方了。STAR framework 可以试试
https://www.vawizard.org/wiz-pdf/STAR_Method_Interviews.pdf

tm1234 发表于 2020-5-5 13:31
lz可以详细说一下系统设计是怎么答得吗，还有你是用的geohash吗 面试官有要求用quadtree什么的吗？已加米多 ...

很多朋友都在问系统设计，我自己画了画图 +详细walkthrough
请看补充答案！ 麻烦加米花了好多时间写这个
https://docs.google.com/drawings ... 9g/edit?usp=sharing

Abstract

the simplest solution is basically store lat,lon for every new place. When we get the user's lat, lon, we do a dumb scan across tables to get the closest places. This is obviously not gonna fly.
A better solution is to use Geohasing. Imagine world map is a large grid and we use 8 digits for hashing with 64 choices. Each `digit` is dividing the map to 64 partitions. Adding one digit is `zooming in` on the map. We store the mapping of
hash -> place_id of where hashes are the length of 6,7,8.
So we are storing different resolutions of the map.

We will use an additional DB for store those Geo hashes

wsrrzxl 发表于 2020-5-5 12:53
恭喜楼主
请问系统设计 ranking是怎么回答的呀

我想单开一个帖子讲我自己怎么准备system design
一般这种经验分享在哪个区域啊 各位大佬？

先给你分享个reading list 把
Books
1. System design primer - https://github.com/donnemartin/system-design-primer. <— really good
2. Software Systems Architecture: Working With Stakeholders Using Viewpoints and Perspectives - https://www.goodreads.com/book/s ... ystems_Architecture

Papers/Articles
1. DynamoDB https://www.allthingsdistributed ... dynamo-sosp2007.pdf
2. Google Big Table https://static.googleusercontent ... bigtable-osdi06.pdf
3. CRUSH - https://www.ssrc.ucsc.edu/Papers/weil-sc06.pdf
4. Cassandra - http://www.cs.cornell.edu/Projec ... shman-ladis2009.PDF

我想单开一个帖子讲我自己怎么准备system design
一般这种经验分享在哪个区域啊 各位大佬？

很多同学问系统设计，很详细的解法在这个google drawing 里面， 大家可以看看
https://docs.google.com/drawings ... 9g/edit?usp=sharing
我是用Geo Hash做的

Abstract

the simplest solution is basically stored lat,lon for every new place. When we get the user's lat, lon, we do a dumb scan across tables to get the closest places. This is obviously not gonna fly.
A better solution is to use Geohasing. Imagine world map is a large grid and we use 8 digits for hashing with 64 choices. Each `digit` is dividing the map to 64 partitions. Adding one digit is `zooming in` on the map. We store the mapping of
hash -> place_id of where hashes are the length of 6,7,8.
So we are storing different resolutions of the map.

We will use an additional DB for store those Geo hashes

马克，赞楼主

zzqandrew 发表于 2020-5-7 22:44
马克，赞楼主

多求点米啊 大佬

论坛匿名账号 发表于 2020/05/07 22:36:20
我想单开一个帖子讲我自己怎么准备system design
一般这种经验分享在哪个区域啊 各位大佬？

有个系统设计板块👍

游客 142.79.193.x 发表于 2020-5-7 22:36
我想单开一个帖子讲我自己怎么准备system design
一般这种经验分享在哪个区域啊 各位大佬？

多谢楼主
有个系统设计板块

游客 142.79.193.x 发表于 2020-5-7 22:33
很多朋友都在问系统设计，我自己画了画图 +详细walkthrough
请看补充答案！ 麻烦加米花了好多时间写这个 ...

谢谢楼主的分享
有一个疑问：8个digits 变成64个choices这块是什么意思啊