maven-assembly-plugin plug-in learning in pom files
Source of the article: https://blog.csdn.net/cx1110162/article/details/78647164?locationNum=2&fps=1
I. Use scenarios
If the project is a micro-service architecture, the probability of using this plug-in is relatively high. Normally, ordinary projects do not need such an implementation.
If a part of the common functionality ...
Posted by phpshift on Tue, 07 May 2019 14:45:04 +0200
Spring Boot Learning Tutorial: Beginning the First Spring Boot Application
This article is originally written by the author. Please indicate the source for reprinting.
SummarySpring Boot can easily create independent production-level Spring-based applications. It follows the principle of "convention is greater than configuration", uses the least configuration, and automates everything as much as possible, ma ...
Posted by matthew_ellis24 on Tue, 07 May 2019 08:35:04 +0200
RDD Conversion from Spark-SQL to DataFrame
Case: (bottom)
1. Dynamic programming of metadata to convert RDD into DataFrame - > RDD2 Data Frame Programmatically
2. Reflect RDD-> DataFrame-> RDD2 DataFrame by Reflecting
After RDD is converted to DataFrame, we can use Spark SQL to query any data that can be built into RDD, such as HDFS. This function is extre ...
Posted by webdata on Mon, 06 May 2019 13:45:04 +0200
nginx solves session consistency
session viscosity
Each request is allocated according to the hash result of accessing ip, so that each visitor can access a back-end server regularly, which can solve the session problem.
upstream backserver {
ip_hash;
server 192.168.0.14:88;
server 192.168.0.15:80;
}
However, there is a single risk. If I have logged in at ...
Posted by ckjian on Sun, 05 May 2019 09:00:05 +0200
Principle Analysis of Distributed Message Communication ActiveMQ II
This chapter focuses on:
1. unconsumed Message source code analysis
2. PrefetchSize on the consumer side
3. Message confirmation process
4. Message Retransmitting Mechanism
5. ActiveMQ multi-node high performance scheme
Message Consumption Flow Chart
Acquisition process of unconsumed Messages data
Let's see what's going on in Acti ...
Posted by techker on Sun, 05 May 2019 08:42:22 +0200