31 years old took the offer of Ali p6. Is it still necessary to go?

I saw a very realistic and heartbreaking question a few days ago ：31 I took Ali P6 Of offer, Are you going ?

First of all, let's give you a simple popularization , It's estimated that many friends are interested in Ali P6 The concept of , Many people even think Ali P A few ah or something , It's all awesome b, It's not .

P Level is only Ali's current job level division system , It is important for the school to recruit students into Ali P5, That is, junior and intermediate engineers , The number of promotions increases 1,P6 Corresponding to senior engineer ,P7 Corresponding to technical experts ,P8 It's a senior expert ,P9 It's the technical director .

That's it , Let's talk about the salary of real gold and silver . This is also a lot on the Internet , Just search everywhere , I found one that is close to my intuitive understanding , You can look at it as a reference .

My thoughts

This is a difficult question to answer , The difficult point to answer is that the subject gives too little information , We have no idea what this is offer, I don't know how he is now , For example, what else do you have offer And so on. , So we can only analyze and answer hypothetically .

The disadvantages are obvious , Everyone can see . There are only two aspects ： Income and development .

When it comes to income, everyone knows , current BAT It's not the first echelon that gives the most money , Don't say PDD、 These rising stars , Even Huawei, a company that has not attracted many people's attention, may not be able to compete for salary .

Not to mention external views and pressures , Just himself , Looking at the group, there are many people younger than him and with higher income , Working in such an environment for a long time , Can you really have peace of mind ?

But what? , School recruitment can enter BAT, To 31 You can basically mix up at the age of P7. therefore 31 year P6 Of offer It looks cheap , It seems meaningless . But here's the problem , Be able to recruit students to BAT How many people are there ？ Can get BAT offer How many people are there ？ How many programmers are there in the country ？ Aren't a lot of programmers who earn thousands of yuan a month in small factories human ？

This is a matter of different opinions , There is no standard answer , Everyone has different values and will naturally make different choices .

In my opinion , When the salary difference is not very large , I will choose Ali . Except Ali is more stable , Beyond better welfare , Another important reason is that Ali can learn more . What you can learn here is the manuals written by Daniel of various technologies in the intranet 、 Technology sharing , There are also ways to do things learned from excellent colleagues 、 thinking model . More importantly, you can also learn a little management philosophy , And the operation mode of mature companies .

Here are my specific learning routes and notes in recent years , Hope to help those who want to improve their technology !, Whether it's used to consolidate the foundation , Or in the interview to improve competitiveness, you can collect one , Take a look at it when you have time , Here are some screenshots .

Free download method is attached at the end of the article

( One ). Basics

1、Java Basic skill

• Java introduction ( Basic concepts and common sense )
• Java grammar
• Basic data type
• Method ( function )

2、Java object-oriented

• Classes and objects
• Three characteristics of object orientation
• Modifier
• Interfaces and abstract classes
• Other important knowledge points

3、Java The core technology

• aggregate
• abnormal
• Multithreading
• File with the I\O flow

( Two ). Concurrent

1、 Concurrent container

• JDK Summary of concurrent containers provided
• ConcurrentHashMap
• CopyOnWriteArrayList
• ConcurrentLinkedQueue
• BlockingQueue
• ConcurrentSkipListMap

2、 Thread pool

• The benefits of using thread pools
• Executor frame
• ( important )ThreadPoolExecutor Class introduction
• ( important )ThreadPoolExecutor Examples of use
• Several common thread pools are explained in detail
• ScheduledThreadPoolExecutor Detailed explanation
• Thread pool size determination

3、 Optimistic lock and pessimistic lock

• What is pessimistic lock and optimistic lock
• There are two common ways to implement optimistic locks
• Disadvantages of optimistic lock
• CAS And synchronized The use of

( 3、 ... and ). JVM

1、Java Memory area

• summary
• Run time data area
• HotSpot Exploring virtual machine objects
• Key supplementary content

2、JVM Garbage collection

• uncover JVM The mystery of memory allocation and recovery
• The object has died ?
• Garbage collection algorithm
• Garbage collector

3、JDK Monitoring and troubleshooting tools

• JDK Command line tools
• JDK Visual analysis tools

（ Four ） The Internet 、linux、 Data structure and algorithm 、 database 、 The system design 、 Must know tool 、 Interview guide

Because the space is limited , Other contents will not be shown one by one , This advanced note has a total of 512 page . It should be very helpful for small partners who want to advance , I hope it can help you .

You can click on the business card below for free .