FB continues to hire people these days.

However, one student shared his experience of interviewing at Facebook. After failing to do a good job in the system design question, he was now worried that he had missed out on his dream company.

What’s worse, this isn’t the first time; Let’s take a look at what Facebook actually tested: Title: Load balancer

Implement a load balancer for a website that provides the following three functions:

  1. Add a new server to the cluster => add(server_id).
  2. To delete a server from the cluster => remove(server_id).
  3. Select a valid server randomly (equally likely) in the cluster => Pick ().

In the beginning, there were no servers in the cluster. Each pick () call you need to return a random server_ID in the cluster. LintCode answer

Indeed, in recent years, the major factories for job seekers system design ability is becoming more and more high, the frequency of the corresponding interview questions also increased year by year. Generally speaking, the algorithm wheel determines whether the company accepts you or not, and the performance of the system design determines the level of title given to you. System design performance is not ideal, through, add, cool cool are possible. In order to help you better grasp the system design, this issue we have prepared for you to upgrade the system design job hunting package.

System Design Job Search Package

Please refer to the end of the article for collection

Get the students must carefully look at oh, before there were students get after not seriously look, live missed Google offer!

System design interview error

Abuse key words:

Many interviewees use the following key words frequently in job interviews, but this practice is likely to reduce the impression of the interviewer.

  • Load Balancer

  • Memcache

  • NodeJS

  • MongoDB

  • MySQL

  • HDFS

  • Hadoop

Work solution or perfect solution? :

Interviewers do not judge the system by its perfection, but by the performance of the candidates and the feasibility of the system.

Therefore, it is more meaningful to show one’s ability and knowledge reserve within limited conditions and build a work solution with details and an overall framework than to hold back the incomplete perfect solution full of loopholes.

System design of interview skills

Effective communication, carry points:

Interview questions designed by the system are often concise, and interviewers will only present one final requirement, which requires the interviewees to take the initiative and communicate with them in a targeted manner.

In the process of direct communication, express their understanding of the requirements, imagination of the general framework, consideration of the details, the discovery of problems, and explore the way to solve the problem…… Each step requires a strong repository of knowledge. This means that there is little effect of mechanical brushing in preparation. The key is to find problems in brushing, summarize experience, sort out logic, and weigh the advantages and disadvantages of schemes and practices.

Skillfully use 4S analysis method:

While effective communication with your interviewer is encouraged, it’s not a good idea to ask them where to start.

In this emergency situation, maybe the 4S analysis can give you some insight.

4S Scenario, Service, Storage, Scale

  • Scenario Scenario: What functions need to be designed and to what extent?
  • Service: Splits a large system into smaller services
  • Storage: How is data stored and accessed
  • Scale upgrade: Resolve defects and deal with possible problems

In the system design interview questions, the effectiveness of the 4S method has been confirmed by the students of nine chapters, which is favored by the interviewer. Will you be the next person to get the 4s on shore?

Mr. Daniel has summarized the most systematic and detailed 4S methods and skills in the system Design Class of Nine chapters of algorithms.

Student feedback:

Lessons learned:

  • Master the skills and key points of system design interview;
  • More in-depth and comprehensive understanding of system design issues, can design systems independently;
  • In practical cases, I can better use system design ideas and analyze system functions in depth.
  • Can solve most of the system design problems encountered in the interview.

Introduction to the lecturer:

Top IT engineer of Dongxie

He used to work for a social network company with hundreds of millions of active users. He has years of experience in website development and is good at website architecture and database.

Gold medal winner of national Informatics Competition, quantitative engineer

Graduated from TOP3 universities in China and studied abroad in Harvard University in North America. Received offers from Google, Facebook, Microsoft, Goldman Sachs and other hedge funds.

Listen to the content

  • What are common problems in system design
  • How to answer system design questions
  • How to design Twitter

Listening: click the link to sign up for free audition ~ www.jiuzhang.com/course/28/?…

How to collect the System Design Job Package?

Scan code to add assistant nine chapter algorithm – round VX: Yuanyuantuba, reply password “system design design better future” can obtain welfare