What is mysql's master-slave replication?
MySQL master-slave replication refers to the replication of data from one MySQL database server master node to one or more slave nodes.MySQL replicates asynchronously by default, so that the master server is not always accessed by the slave node to update its own data, which can be updated over a remote ...
Posted on Wed, 15 Jan 2020 20:55:58 -0500 by Cinquecento
BTC node building
The first step of BTC is to build nodes. Because BTC is the most popular and popular, there are many articles about BTC node building on the network, or problems in synchronizing nodes. I won't go into details here (mainly there is no environment for building nodes). Here is an article: Building Bitcoin test node under b ...
Posted on Wed, 15 Jan 2020 03:54:32 -0500 by jmboblee
def __init__(self, name, age):
self._name = name
self._age = age
def age(sel ...
Posted on Wed, 15 Jan 2020 03:22:21 -0500 by chrisdburns
[spring] AOP learning notes
1. Take a chestnut
2. Transaction control
2, Dynamic agent
1. JDK agent
2. CGLIB agent
3, Here comes the point
2. Relevant terms
4. Steps of AOP configuration based on XML
5. Writing of pointcut expression
6. Five notification types ...
Posted on Wed, 15 Jan 2020 03:04:52 -0500 by bluejay002
jps (JVM Process Status Tool): displays all HotSpot virtual machine processes in the specified system
jstat (JVM Statistics Monitoring Tool): users collect all aspects of the operation data of the HotSpot virtual machine
jinfo (Configuration Info for Java): view and adjust parameters of virtual machine in real time, and integrate into jhsdb ...
Posted on Tue, 14 Jan 2020 23:49:41 -0500 by komquat
ScheduleAlgorithm is an interface responsible for selecting a suitable node for pod. This section mainly analyzes how to implement an extensible and configurable general algorithm framework to achieve general scheduling, how to uniformly register and build algorithms, how to transfer metadata and scheduling process context data
1. Design consid ...
Posted on Tue, 14 Jan 2020 22:08:16 -0500 by mortal991
Note: Although the method area is discussed in this article, knowledge about Class file structure and Class loading is also involved in order to answer some questions.
java7 and before, method area implementations were permanent, and after java8, method area implementations were Metaspace
5.1 D ...
Posted on Tue, 14 Jan 2020 20:51:50 -0500 by Gho
I learned a little bit about ByteBuddy today.
Its official warehouse address is: https://github.com/raphw/byte-buddy.
Official description: Runtime code generation for the Java virtual machine.
Anyone who has written Java knows that Java only supports interface based dynamic proxies. If your class does not implement an interface, and yo ...
Posted on Tue, 14 Jan 2020 06:07:37 -0500 by FidelGonzales
11.1 mapping map operation of set elements
11.1.1 look at a real demand
Requirement: Please * 2 all elements in List(3,5,7), and return the result in a new collection, that is, return a new List(6,10,14). Please write a program to implement it
11.1.2 using traditional methods to solve
//Traditional wri ...
Posted on Tue, 14 Jan 2020 03:33:57 -0500 by ashok_bam
Introduction to Netty
Netty is a widely used Java network programming framework.
Characteristics of Netty technology and method
Unified interface for multiple transport types - blocking and non blocking
Simple but more powerful threading model
True connectionless datagram socket support
Link logic supports reuse
Posted on Tue, 14 Jan 2020 02:09:49 -0500 by colesw