Speak ahead
There is a very hot topic on Zhihu: Is the number of programmers in China saturated or surplus?
This year everyone has a common feeling: it is hard to find a job, and the interview is getting harder and harder.
In fact, this phenomenon is not only due to the fact that many companies have closed down this year due to the impact of the epidemic. Many companies have scaled down and laid off employees, resulting in a shortage of jobs. More importantly, there is a surplus of juniors, a lack of intermediates, and a shortage of seniors.
For classmates who learn Java and engage in server-side services, how many people understand the reference counting and recycling mechanism? So, as a programmer, if you don’t want to learn or improve your skills, then you will be shot dead on the beach by the waves. Then you might as well change your career as soon as possible. Perhaps the income from street stalls is much higher than your current income. .
Not much to say, go directly to the dry goods, thoroughly understand this "Java Intermediate and Senior Programmer Essential Core Knowledge" summary, and head towards the intermediate and senior programmers!
Directory outline
Due to the excessive content of the document, there are a total of 524 pages, so in order to avoid affecting everyone's reading experience, only a part of the content is shown in screenshots. The detailed and full version can be forwarded + followed by private message [Advanced] to get it!
Java
basis
container
Concurrent
JVM
There are so many people who want to enter the big factory every year, and how many people are really able to do so. From all the resume pools, 100 randomly selected, less than 10 can pass the T3 level interview of the wolf factory. Just a written test can kill more than half. The real reason is: the foundation.
Some people don't even understand the JVM and concurrency, how do you interview the ideal company, and JVM and concurrency are the most important foundations in Java.
basis
Concurrent
JVM
The internet
Computer network knowledge
TLS in HTTPS
As a Java programmer, of course, it is not just about learning Java. When you want to be a programmer to go online, you must rely on the network.
Each knowledge point has a detailed summary
Linux
Getting to know the operating system
Explore Linux
Linux file system overview
Linux basic commands
You can use any system to develop any software. Linux is of course more convenient than windows to develop linux software. More people use Linux only because more people need to develop software that runs on Linux, write embedded Linux programs, write Arduino programs, Linux is a must of. And Linux does not toss, and there is very little toss.
Data Structures and Algorithms
Data structure (bloom filter)
algorithm
Data structures and algorithms are internal functions , which can basically be integrated into any language, even database systems. After reading it, you will know why the collections in Java are designed in this way. The understanding of time and space can be improved. One level.
database
MySQL
Redis
Without a database, where is the front-end interaction?
system design
RestFul API
Common framework
1. Spring FAQ
2. Spring common annotations
3. Spring transaction
4. Detailed explanation of Spring IOC and AOP
5. Scope and life cycle of Bean in Spring
6. Detailed explanation of SpringMVC working principle
7. What design patterns are used in Spring?
Authentication and authorization (JWT, SSO)
distributed
Large site architecture
Microservice
These contents should be all necessary knowledge for a senior programmer, especially distributed, large-scale websites and micro-service technologies are very hot and popular technical knowledge on the Internet.
Must know tools
Git
Docker
Interview guide
How should a programmer write a resume
How to prepare for an interview
Java learning route and method recommendation
Friends who need it quickly forward it, only after forwarding + following, scan
Grow together, progress together!