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JAVA basics

JAVA abnormal classification and treatment
Anomaly classification
Exception handling
The difference between Throw and throws
JAVA reflection
Dynamic language
The concept of reflection mechanism (all the attributes and methods of the class are known in the running state)
Java reflection API
Steps to use reflection (obtain Class object, call object method)
3 ways to get the Class object
Two ways to create objects
JAVA annotation
JAVA inner class
JAVA generic
JAVA serialization (creating reusable Java objects)
JAVA copy

Because there are too many details in the pdf document, only the chapters with some knowledge points are edited. Under the rough introduction, each chapter has more detailed content in the small nodes! The following is part of the chapter list. Due to space limitations, the detailed explanations on the catalog cannot be listed one by one. At the end of the article, there is a detailed explanation of all the following chapters.

JAVA collection

Interface inheritance and implementation
List
ArrayList (array)
Vector (array implementation, thread synchronization)
LinkList (linked list)
Set
HashSet（Hash表）
TreeSet (binary tree)

JVM

Thread
JVM memory area
JVM runtime memory
Garbage collection and algorithms
JAVA four reference types
GC generational collection algorithm VS partition collection algorithm
GC garbage collector
JAVA IO / NIO
JVM class loading mechanism

JAVA multithreaded concurrency

JAVA Concurrent Knowledge Base
JAVA thread implementation / creation method
4 types of thread pools
Thread life cycle (state)
4 ways to terminate threads
The difference between sleep and wait
The difference between start and run
JAVA background thread
JAVA lock
Basic thread method 4.1.11. Thread context switch
Synchronization and deadlock
Principle of Thread Pool
JAVA blocking queue principle
Usage of CyclicBarrier, CountDownLatch, Semaphore
The role of volatile keyword (variable visibility, prohibit reordering)
How to share data between two threads

Spring principle

Spring features
Spring core components
Spring common modules
Spring main package
Spring common annotations
Spring third-party integration
Spring IOC principle
Spring APO principle
Spring MVC principle
Spring Boot principle
JPA principle
Mybatis cache
Tomcat architecture

Microservice

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 codec
Communication process
RMI implementation

Distributed cache

Cache avalanche
Cache penetration
Cache warm-up
Cache update
Cache degradation

Zookeeper

Zookeeper concept
Zookeeper role
Working principle of Zookeeper (atomic broadcast)
Znode has four types of directory nodes

Slf4j
Log4j
LogBack
Logback advantages
ELK

RabbitMQ

RabbitMQ concept
RabbitMQ architecture
Exchange type

Kafka

Kafka concept
Kafka data storage design
Data files of partition (offset, MessageSize, data)
Data file segmentation (sequential read and write, segment command, binary search)
Data file index (segment index, sparse storage)
Producer design
Load balancing (partitions will be evenly distributed to different brokers)
Batch send
Compression (GZIP or Snappy)
Consumer design

Cassandra

Cassandra concept
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 (Generate RowKey for the value summary to be indexed)
Data read and write

Hbase

Hbase concept
Columnar storage
Hbase core concept
Hbase core architecture
Hbase write logic
HBase vs Cassandra
MongoDB
MongoDB concept
MongoDB features

Design Patterns

Design Principles
Factory method pattern
Abstract factory pattern
Singleton mode
Builder mode
Prototype mode
Adapter mode
Decorator mode
Agency model
Appearance mode
Bridge mode
Combination mode
Flyweight model
Strategy mode
Template method pattern
Observer mode
Iterative subpattern
Chain of Responsibility Model
Command mode
Memo mode

Load balancing

Layer 4 load balancing vs. Layer 7 load balancing
Load balancing algorithm/strategy
LVS
Keepalive
Nginx reverse proxy load balancing
HAProxy

database

Storage engine
index
Three paradigms of database
Database is transaction
Stored procedure (a set of SQL statements for a specific function)
Trigger (a program that can be executed automatically)
Database concurrency strategy
Database lock
Distributed lock based on Redis
Classification table
Two-phase commit agreement
Three-phase commit agreement
Flexible transaction
CAP

Consensus algorithm

Paxos
Oats
Raft
NWR
Gossip
Consistency Hash
Consistent Hash feature
Consistency Hash principle

JAVA algorithm

Binary search
Bubble sort algorithm
Insertion sort algorithm
Quick sort algorithm
Hill sorting algorithm
Merge sort algorithm
Bucket sorting algorithm
Base sorting algorithm
Pruning algorithm
Backtracking algorithm
Shortest path algorithm
Largest array algorithm
Longest public order algorithm
Minimum spanning tree algorithm

data structure

Stack
Queue
Link
Hash Table
Sorted binary tree
Red black tree
B-TREE
bitmap

Encryption Algorithm

Hadoop

Hadoop concept
HDFS
Client
NameNode
Secondary NameNode
DataNode
MapReduce
JobTracker
TaskTracker
Task
Reduce Task execution process
Hadoop MapReduce job life cycle
Job submission and initialization
Task scheduling and monitoring.
Task operating environment preparation
Task execution
Homework completed

Spark

Spark concept
Core architecture
Core components
SPARK programming model
SPARK calculation model
SPARK operation process
SPARK RDD process
SPARK RDD

Storm

Storm concept
Cluster architecture
Nimbus (master-code distribution to Supervisor)
Supervisor (slave-manages the start and termination of the Worker process)
Worker (process that specifically handles component logic)
Task
ZooKeeper
Programming model (spout->tuple->bolt)
opology operation
Storm Streaming Grouping
ResourceManager
NodeManager
ApplicationMaster
YARN operation process

cloud computing

SaaS
PaaS
IaaS
Docker
Openstack
Namespaces
Process (process isolation implemented by CLONE_NEWPID)
Libnetwork and network isolation
Resource isolation and CGroups
Mirroring and UnionFS
Storage driver

Due to space limitations, the detailed information of the pdf document is too comprehensive, and there are too many details, so only some of the knowledge points are screenshots for a rough introduction, and each small node has more detailed content! Forward + follow, and then add VX (tkzl6666 to get the free way to receive "Java Core Technology Finishing"

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