Cast himself head several Internet companies, Ali is one of them, I also expect the company. Since the objectives laid down, we naturally have to make every effort to achieve, before the interview Ali wave, but ultimately lost to MySQL, several problems answer was not satisfactory, so the results also imagine, hanging very fast. But this year because of the epidemic, major Internet companies have also been some resistance, but also taking advantage of this idle occasion, I settle down, lost in the "MySQL" the first 33 days, Ali won four Amoy Department offer!
Note: The following article contents, related to the interview questions (+ answers parsing), mind maps, core knowledge pdf and other documentation, can share free, there is little need partners, direct private letter I [growth] to free package take ~
Ali Amoy Department of interview questions (core section)
The following are my main sort out these two core face interview questions, which marked the coarse fraction is asked of MySQL-related, due to limited space, so I order the full version in a PDF document, including the feelings of the interview , detailed process, ideas and suggestions. It requires the full version can be private letter I [Ali] interview.
- If you let yourself realize a Bloom filter should be how to achieve?
- What have you seen the source code of open source frameworks?
- How do you design a RPC framework? Say probably it works dubbo framework
- Distributed Services how to support high-concurrency?
- Java application online could support QPS 1000-2000, but actually only support 100-200, how to troubleshoot the problem?
- Synchronize and talk about the difference between the ReentrantLock?
- JVM threads and operating system threads there a difference? Or the same thing?
- What Ioc and aop is, why have cglib jdk dynamic proxy and proxy?
- What document database? ES and MongoDB What is the difference? Why ES Search quicker?
- What are the types of databases, relational databases and NoSQL What is the difference?
- Which micro-services framework, or middleware have ah?
- What are the components SpringCloud ah, open source and Ali these any different? If you want to use how you choose?
- If you could improve a system, how would you do? If you could design a system, you have to consider what?
- MySQL index is what kind of data structure?
- Commonly used storage engine InnoDB and MyISAM MySQL is the difference?
- How to choose the storage engine MyISAM and InnoDB?
- MyISAM and InnoDB way to achieve BTree index difference in what?
- Why use an index? (Indexing benefits?)
- The index is how to improve query speed?
- Since the index so many benefits, why not give each column of the table creates an index? (Drawback index?)
- Use index What precautions? (When using an index, SQL statements, how to optimize?)
- What is the most left-prefix principle?
- What is covered by the index?
- HashMap and HashSet have anything to do? HashSet HashMap achieve with how to do? KeySet it with the HashMap as HashSet, the underlying source code read it? Read HashMap, know the key to find value, in case where the array HashCode find the key corresponding to several Entry, how to find? Traverse the list, need to use the equals method to find the key of Entry?
Ali core answer interview questions + resolution (full version):
How to review? How rallied to win Ali offer?
(A) identify their weaknesses, cramming
With the first experience interviewing Ali defeated, knowing his own shortcomings, the key point is that the first step is to brush up their own weaknesses, due to the lack of more aspects of MySQL, so we start from MySQL, from master to master, a little bit to get through.
Learning about MySQL, I have also put together a lot of information, first of all they have in mind a mind map, mind map so in accordance with the learning curve is very easy.
- MySQL mind map
- MySQL Performance 21 Best Practices
- The most complete MySQL interview questions and answers to resolve 50
(Ii) the systematic review leak filled
About the systematic review, in fact, a leak filled process, a lot of people at the time of the review, always feel that they know something you do not need to go to learn, in fact, it is prone to "they know for themselves" in this case Therefore systematic review is critical. Of course, systematic review is a skill, can organize some core knowledge points, these points thoroughly understand the core knowledge can be.
About the systematic review, I also put together a set of core knowledge of Java, this core knowledge organize very detailed and complete, including Java basics, data structures and algorithms, open-source framework, distributed and micro service, multi threads, JVM, Spring, MyBatis, MQ and other knowledge points to explain in great detail in place.
(C) take short cuts: brush title
In preparation for the interview, be sure to take time to brush the question, many people misinterpreted the purpose of the question brush, brush the title is considered to have luck, chance of interview is asked to consider the original title is very small, but actually brush title this step to do is learn to "extrapolate" the implication is that in the course of the brush in question, establish a: What is the core of the problem is? Why do you ask? About how this core I want to answer!
About brush questions, share a set of my own manufacturers exam:
Written at the end of the text
Finally, I do not want to say too much nonsense, only a summary: CV is a stepping stone to get a chance to be interviewed, but the ability is the key to win the interview through checkpoints.
Therefore, it is necessary to upgrade themselves, and learning, can not stop.
All the relevant knowledge of the document, face questions, mind maps and other finishing above my personal information can be shared free of charge to everyone, I hope you to a good result in this year's gold and three silver four able to harvest!
Forwards + comments, concerns small series, private letters [growth] to take away all the free information ~
