The editor has compiled a core knowledge of the path of advanced Java architects, and is also a knowledge point that interviewers must ask during the interview. The chapter also includes a lot of knowledge points, including basic knowledge, Java collections, JVM, and more Thread concurrency, spring principle, microservices, Netty and RPC, Kafka, diary, design pattern, Java algorithm, database, Zookeeper, distributed cache, data structure, etc.
Because there are too many details in the pdf document, only the edited part Under the rough introduction of the chapters of knowledge, there are more detailed contents in the small nodes of each chapter! The following is a list of some chapters. Due to the limitation of the headline, the detailed explanations on the catalog cannot be listed one by one. At the end of the article, all the detailed knowledge of the following chapters is explained.
JVM
Thread
JVM memory area
JVM runtime memory
garbage collection and algorithm
JAVA four reference types
GC generational collection algorithm VS partition collection algorithm
GC garbage collector
JAVA IO / NIO
JVM class loading mechanism
Due to space limitations, I have too many details, so I only took a screenshot of some knowledge points and roughly introduced them. Each small node has more detailed content! If necessary, please continue to read
JAVA collection
Interface inheritance and implementation
List
ArrayList (array)
Vector (array implementation, thread synchronization)
LinkList (linked list)
Set
HashSet (Hash table)
TreeSet (binary tree)
JAVA multi-threaded concurrency
JAVA concurrent knowledge base
JAVA thread implementation / creation method
4 thread pool
thread life cycle (state)
termination thread 4 ways
sleep and wait difference
start and run difference
JAVA background thread
JAVA lock
thread basic method 4.1.11. Thread context switching
synchronization lock The
principle of deadlock thread pool
JAVA blocking queue principle
CyclicBarrier, CountDownLatch, Semaphore usage
The role of volatile keyword (variable visibility, prohibit reordering)
How to share data between two threads
JAVA basic
JAVA exception classification and processing
JAVA reflection
JAVA annotation
JAVA internal class
JAVA generic
JAVA serialization (creating reusable Java objects)
JAVA replication
Spring principle
Spring features
Spring core components
Spring common modules
Spring main packages
Spring commonly used annotations
Spring third-party combined with
Spring IOC principles
Spring APO principles
Spring MVC principles
Spring Boot principles
JPA principles
Mybatis cache
Tomcat architecture 
due to space limitations editor, the details are too much, so Only take a screenshot of some knowledge points for a rough introduction, and each small node has more detailed content! There is a necessary program ape (yuan) can click:
add VX free access: 13272413561 (note 51)
Microservices
Service registration discovery
API Gateway
configuration center
event scheduling (kafka)
service tracking (starter-sleuth)
service fuse (Hystrix)
Hystrix circuit breaker mechanism
API management
Netty 与RPC
Netty principle
Netty high-performance
Netty RPC implementation
key technology
core process
message encoding and decoding
communication process
RMI implementation
Distributed cache
Cache avalanche
cache penetration
cache warm-up
cache update
cache degradation
The internet
Network 7-layer architecture
TCP / IP principle
TCP three-way handshake / four times waved
HTTP principle
CDN principle
distribution service system
load balancing system
management system
Log
Slf4j
Log4j
LogBack
Logback Advantage
ELK
Zookeeper
Zookeeper concept
Zookeeper role
Zookeeper works (atomic broadcast)
Znode has four forms of directory nodes
Kafka
Kafka concept
Kafka data storage design
partition data file (offset, MessageSize, data)
data file segment segment (sequential read and write, segment command, binary search)
data file index (segment index, sparse storage)
producer design
load balancing (Partition will be evenly distributed to different brokers)
batch send
compression (GZIP or Snappy)
consumer design
RabbitMQ
RabbitMQ concept
RabbitMQ architecture
Exchange type
Hbase
Hbase concept
columnar storage
Hbase core concept
Hbase core architecture
Hbase write logic
HBase vs Cassandra
MongoDB
MongoDB concept
MongoDB features
Cassandra
Cassandra conceptual
data model
Cassandra consistent hash and virtual node
Gossip protocol
data replication
data write request and coordinator
data read request and background repair
data storage (CommitLog, MemTable, SSTable)
secondary index (value summary to be indexed, generate RowKey)
data Read and write
Design Patterns
Design Principles
Factory Method Pattern
Abstract Factory Pattern
Singleton Pattern
Builder Pattern
Prototype Pattern
Adapter Pattern
Decorator Pattern
Proxy Pattern
Appearance Pattern
Bridge Pattern
Combination Pattern
Flyweight Pattern
Strategy Pattern
Template Method Pattern
Observer Pattern
Iteration Subpattern
Responsibility Chain Pattern
Command Pattern
Memo Pattern
Load balancing
Four-layer load balancing vs seven-layer load balancing
load balancing algorithm / strategy
LVS
Keepalive
Nginx reverse proxy load balancing
HAProxy
database
The storage engine
index
database three-paradigm
database is a transactional
storage process (a set of SQL statements for specific functions)
triggers (a program that can be automatically executed)
database concurrency strategy
database locks are
based on Redis distributed lock
partition table
two-phase commit protocol
three-phase commit protocol
Flexible transaction
CAP
Consensus algorithm
Paxos
Zab
Raft
NWR
Gossip
Consistency Hash
Consistency Hash Features
Consistency Hash Principle
JAVA algorithm
Binary search
bubble sorting algorithm
insertion sorting algorithm
quick sorting algorithm
Hill sorting algorithm
merge sorting algorithm
bucket sorting algorithm
radix sorting algorithm
pruning algorithm
backtracking algorithm
shortest path algorithm
maximum subarray algorithm
longest common suborder algorithm
minimum spanning tree algorithm
data structure
Stack (
queue)
linked list (Link)
hash table (Hash Table)
sort binary tree
red black tree
B-TREE
bitmap
Encryption Algorithm
AES
RSA
CRC
MD5
Hadoop
Hadoop Concept
HDFS
Client
NameNode
Secondary NameNode
DataNode
MapReduce
JobTracker
TaskTracker
Task
Reduce Task Execution Process
Life Cycle of Hadoop MapReduce Jobs
Job submission and initialization
Task scheduling and monitoring.
Task execution environment preparation
task execution
job completion
Spark
Spark concept
core architecture
core components
SPARK programming model
SPARK calculation model
SPARK running process
SPARK RDD process
SPARK RDD
Storm
Storm concept
cluster architecture
Nimbus (master-code is distributed to Supervisor)
Supervisor (slave-manage the start and termination of Worker process)
Worker (specific process of processing component logic)
Task
ZooKeeper
programming model (spout-> tuple-> bolt)
opology runs
Storm Streaming Grouping
ResourceManager
NodeManager
ApplicationMaster
YARN running process
cloud computing
SaaS
PaaS
IaaS
Docker
OpenStack
Namespaces
process (CLONE_NEWPID achieve process isolation)
Libnetwork isolated from the network
resource isolation and CGroups
mirror and UnionFS
storage drive 
due to space constraints Detailed information Xiao Bian, pdf document is too full, too many details of it, so just Take a screenshot of some knowledge points for a rough introduction, and each small node has more detailed content! There is a necessary program ape (yuan) can click:
add VX free access: 13272413561 (note 51)
Source: https://www.toutiao.com/i6818088184354701831/Acquisition
method: add VX free access: 13272413561 (note 51)