Principle analysis of Apache Flink CDC batch stream fusion technology
This article is reproduced from the official account of "good future technology". The use of Flink CDC 2 is introduced in the case of Flink SQL, and the core design of CDC is interpreted. The main contents are as follows:caseCore designCode explanationGitHub address https://github.com/apache/flinkWelcome to like Flink and send star~In ...
Posted by murdocsvan on Wed, 10 Nov 2021 15:35:58 -0800
In depth analysis of RocketMQ source code - message storage module
1, Introduction
RocketMQ is Alibaba's open source distributed messaging middleware. It draws on Kafka's implementation and supports functions such as message subscription and publishing, sequential message, transaction message, timing message, message backtracking, dead letter queue and so on. RocketMQ architecture is mainly divided into four ...
Posted by stallingjohn on Tue, 09 Nov 2021 02:39:19 -0800
Native servlet s cannot get data using fileupload
fileupload website URL: you can view detailed documentation, as well as sample code FileUpload – Homehttp://commons.apache.org/proper/commons-fileupload/
Project environment: My front end is written in vue, and the back end is written in native servlet s
upload.parseRequest(req);
This statement was supposed to get a List, but what I g ...
Posted by trillion on Thu, 04 Nov 2021 09:19:26 -0700
Zookeeper 3.7.0 installation and deployment
1, Introduction
1.1 general
Zookeeper
It is an open source distributed framework that provides coordination services for distributed frameworks
Apache
project
Working mechanism:
1.2 features
1.3 data structure
Structure and of ZooKeeper data model
Unix
The fil ...
Posted by wildteen88 on Wed, 03 Nov 2021 15:20:03 -0700
Serverless engineering practice | self built Apache opentask platform
Author Liu Yu (Jiang Yu)Opentask is an open source, serverless cloud platform. It can respond to various events by executing extended code in the runtime container without users' concern for the relevant infrastructure.Introduction to opentaskOpentask is a cloud based distributed event driven programming service. Opentask provides a programming ...
Posted by jboku on Mon, 01 Nov 2021 06:58:55 -0700
CDH6.3.2 integration with Apache Flink1.12.0
edition: Centos7.6 JDK1.8 Scala2.11 Python2.7 Git1.8.3.1 Apache Maven3.6.3 CDH6.3.2 Apache Flink1.12.0
The above software needs to be installed in advance!!!
1, Compile Flink
1 download the flink source code
git clone https://github.com/apache/flink.git
git checkout release-1.12.0
2. Add maven image
Add the following mirrors in the m ...
Posted by mustatin on Mon, 01 Nov 2021 04:52:28 -0700
Apache RocketMQ: understand the official OrderExample example
1. Declaration
The current content is mainly to learn and analyze the official OrderExample example and understand its meaning. Refer to Official documents
2. Official demo
Serial number message producer
public class OrderedProducer {
public static void main(String[] args) throws Exception {
// Instantiate with a producer group name.
D ...
Posted by richever on Sat, 30 Oct 2021 18:39:52 -0700
Android advanced decryption reading notes -- the startup process of four components
Startup process of root Activity
There are two types of Activity startup: one is the startup process of root Activity, and the other is the startup process of ordinary Activity. Root Activity refers to the first Activity started by the application, so the startup process of root Activity can also be understood as the startup process of the app ...
Posted by digitalflash on Wed, 27 Oct 2021 16:06:02 -0700
"21 days of good habits" phase I-4
I learned BroadcastReceiver from my teacher today. Let's record it.
Send standard broadcast (use static registration, that is, manually write the registration code in AndroidManifest.xml)
Take a look at my project structure
The MainActivity code is as follows
import android.content.ComponentName;
import android.conten ...
Posted by jb489 on Mon, 25 Oct 2021 16:05:37 -0700
Deploy the LAMP platform, compile and install Apache, MySQL, PHP, and forum
preface
Here we will introduce the deployment of LAMP platform and the steps of compiling and installing the source code of each component.
1, Introduction to LAMP
1. LAMP platform overview
LAMP architecture is one of the mature enterprise website applica ...
Posted by phpuser1985 on Sun, 24 Oct 2021 20:09:24 -0700