About epidemic:
Before entering the topic, opening the first chat a few words, this interview is more accidental, the main reason is because of the epidemic, so the mind is not prepared, this time with pneumonia in our study, work and life have resulted in very big impact, many schools delayed opening the school, companies postponed rework, in fact, during this time of retreat, we can just make good use of this time and want to do things for themselves after fully prepared, I hope as soon as possible pneumonia in the past, our lives back to normal.
Share the following main surface and through personal learning methods will include a lot of PDF documents, such as the interview exam (with answers + parsing), study notes, documents, and combat brain map, etc., can be shared for free.
Since the outbreak reason, after communication with Ali HR, it is the way to take the video side, a total of four all the way through the video. Compared to the video site surface gives the surface or to feel a little easier, the process is not so intense, but also more natural means of communication, there is not much pressure, as long as the technology ok, basically no problem, so that the interview successfully passed.
Ants gold dress side
self-introduction
project description (the biggest technical challenges and technical difficulties of the project)
the JVM memory which divided into several zones, each zone is what role? JVM what recovery algorithms, the corresponding collector What?
Two kinds GC determination method? Features CMS collector and G1 collector.
Java container What? What is synchronous container, which is complicated by the container?
The time complexity of insertion and access to the ArrayList and LinkedList?
After HashMap hash conflict is detected, the element is inserted at the end or beginning of the list?
Cenozoic is divided into several areas? What algorithm for garbage collection? Why use this method?
1.8 also uses a red-black tree, talk about the characteristics of the red-black tree, and why we must use the red-black tree instead of AVL, B tree like?
Cenozoic is divided into several areas? What algorithm for garbage collection? Why use this method?
Works thread pool, several important parameters, then several parameters specific to the thread pool will analyze how to do, and finally asked what the role of blocking queue is?
http and https difference, there is no other safe means of transmission used?
Spring project with more, there is no understanding of the principles of Spring? AOP and IOC principles
coding: two threads, one thread print odd and one even-numbered print, the print control alternating parity. (There are many ways to achieve, it is best to compare the pros and cons)
ant gold serving two faces
query what circumstances do not use the index?
Database index, the underlying is how to achieve, why use a B-tree index?
Mysql master-slave synchronization of principle?
MySQL is how a B + tree?
Talk about database optimistic locking and pessimistic locking?
What NoSQL databases have been used? MongoDB and Redis which scene applies?
TCC description of distributed transaction service design?
Redis and memcache What is the difference? Why Redis have an advantage over memcache?
Redis data structure of
massive data filtering, blacklist filtering a url.
Talk about AtomicInteger, why should the CAS and not synchronized?
Ants gold dress on three sides
consider redis when there is no consideration capacity? The amount of data about how much?
Redis bottom of the list zset realize
the difference between solr and mongodb, why not save data solr?
Sharing scheme distributed session of what, what advantages and disadvantages
to talk about the implementation of distributed locking, and distributed globally unique ID of the comparison?
Cluster monitor when the focus of technical indicators which need attention? How to optimize these indicators?
From millions of data to one hundred million data, which will face technical challenges? Your technical solution ideas?
Sub-library sub-table database needs how to achieve?
The complexity of sorting algorithms, quick sort non-recursive implementation.
Messaging middleware What? Advantages and disadvantages between them?
Ants gold dress surrounded by
a distributed architecture which aspects are more familiar
introduce performance optimization case your practice, and your idea of optimizing
introduce the project
to talk about the one you think you learned most of the project, using what technology challenges where
various chat projects , from an architectural project design to deployment process.
If there had learned the new technology?
What I would like to ask?
The biggest setbacks encountered in the last two years, from setbacks learned anything?
Three to five years of career planning?
HR surface
self-introduction
project description
how to learn new skills?
The biggest challenge and how to solve?
The largest university in the harvest?
How to teamwork?
Career planning
due to the limited length of the article, so this sort of A which answers to questions in the PDF documentation
on how to prepare, to get Ali Offer?
Step1: Prepare a good resume
you want to get Ali Offer, you must first have a chance to interview Ali, manufacturers want to get an interview is not an easy thing, and resume, the interview is forced open the door key , key matches, depends on a resume is excellent. Many graduating students do not know how to make your own resume, just download a copy online, change to change personal information. In fact, the interview resumes manufacturers, value is not your personal preferences, nor is it involved in any club in school students pay more attention to your personal or practical ability. So, a good resume should include your personal grasp of technical points, if there are internship experience, participate in any project, what project to solve the problem, and so on.
Step2: prompt its soft power (knowledge and skills)
The second key is necessary to perfect their own strength, whether you are graduating students, or a good job a few years, whether it is social or school recruit recruit, recruit business is always perfect own strength, that is, your knowledge base, you the level of technology to meet the requirements, and the only way to enhance their soft power is: continuous learning.
Below I will share some of my personal study documents, a friend in need get their choice:
Java core knowledge finishing
Java core knowledge
Spring family bucket (actual series)
other electronic data
Step3: brush the problem
since it is to the interview, then ultimately, brush the question, in fact, after the Spring Festival to go home, can not go anywhere, I was brush many face questions, so in the interview process to be able to be aware of, basically clear during the interview to ask what knowledge, high-frequency problem and what, so brush theme interview preparation process is very important It points.
The following is my interview possession of exam:
Written in the last
Many people are saying that "learning useless", the reason actually produces useless, because they are learning with the match not on what you want, which means that their own learning It was not enough. Whether it is learning or work, you should have the initiative, so if manufacturers have a dream, then they would have their own efforts to achieve it.
More learning materials can be shared, and finally I wish you good health and successfully get the offer favorite!
