iamserda

Backend Architectures

Twitter

ror, scala, jetty, erlang, thrift, mongrel, comet server, my-sql, memchached, varnish, kestrel(mq), starling, gizzard, cassandra, hadoop, vertica, munin, nagios, awstats

• Introduce Gizzard of Twitter - 트위터의 새로운 분산 관리 라이브러리 Gizzard를 소개합니다.
• The Architecture Twitter Uses to Deal with 150M Active Users, 300K QPS, a 22 MB/S Firehose, and Send Tweets in Under 5 Seconds
• Scaling Twitter: Making Twitter 10000 Percent Faster

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Day 1

• Read How to answer a coding interview.
• Read Using sliding window technique to solve coding interview questions.
• Practice coding Array 1 Two Sum
• Practice coding Array 2 Three Sum
• Practice coding Array 3 Max Consecutive Ones III
• Practice coding Array 4 Maximum Product Subarray

Day 2

• Read Using state machine to solve complex coding interview questions.

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Interviews Coding Platforms

• Hacker Rank
• Leet Code
• Algo Expert
• Educative.io
• Exponent
• Interviewing.io
• Pramp free mock interviews
• JoinTaro mentorship program
• Advent of Code

iamserda

How much prep did you do for the technical interviews?

I get asked this a lot so I thought I'd write it up to share. For context, I was interviewing for staff+ individual contributor roles at tech companies.

Technical Interviews

I was preparing to do some amount of live coding interviews, and some amount of pairing interviews.

Tech setup check-in

My friend Tom offered to do a pairing interview with me, which I also used to check my Zoom / screenshare setup. I screen shared from my 2019 XPS 13 for the pairing, but also had Zoom on an ipad for video/audio. I used Airpods for audio. This setup actually worked great, but it was nice to dial in some of the specifics--mic feedback from dialing in from two places, and just practice my schpiel about explaining what I was doing to the other person. Probably not useful for you unless you too, have Linux problems.

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GROKKING NOTES

I liked the way Grokking the coding interview organized problems into learnable patterns. However, the course is expensive and the majority of the time the problems are copy-pasted from leetcode. As the explanations on leetcode are usually just as good, the course really boils down to being a glorified curated list of leetcode problems.

So below I made a list of leetcode problems that are as close to grokking problems as possible.

Pattern: Sliding Window

• https://leetcode.com/problems/maximum-subarray/ # Close enough
• https://leetcode.com/problems/minimum-size-subarray-sum/

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The Job Interview Guide 💼

And English is a Work in Progress ⌛