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Install alirocketmq version from scratch on CentOS7: release-4.0.1 [pro test ha ha] Install git # Update package $ yum update # Install git $ yum install git # Verify git installation success $ git --version # So git can be installed successfully Install wget dependency package # Update package $ yum install wget # You can ...

abstract The Maven central warehouse does not support direct upload of jar packages, so it is necessary to publish the jar packages to some designated third-party Maven warehouses, such as the Sonatype OSSRH warehouse, and then the warehouse synchronizes the jar packages to Maven. This paper records the whole publishing and synchronization pro ...

[TOC] 1. Get to know Hystrix Hystrix is a delay and fault-tolerant library, which aims to isolate remote systems, services and third-party libraries, organize cascading failures, and realize recovery capability in distributed systems with load. In the case of multiple systems and microservices, a mechanism is needed to deal with delays and fail ...

The separation of static and dynamic doesn't explain. There are a lot of theories on the Internet, but the implementation means I understand is that specific requests use specific processing methods. For nginx installation, please refer to this: https://blog.csdn.net/tangyaliang11/article/details/78675535 For tomcat installa ...

The online environment is mostly Linux, sometimes the code execution is slow, but you can't locate where it's slow, or it's more difficult to locate. This article introduces a way to facilitate your problem location.     First of all, let's talk about a tool: Arthas, which is mainly an open-source tool of Alibaba. For details, please ...

We know that PyFlink is newly added in Apache Flink version 1.9, so can the speed of Python UDF function support in Apache Flink 1.10 meet the urgent needs of users? The development trend of Python UDF Intuitively, the function of PyFlink Python UDF can also be changed from a seedling to a tree as shown in the above figure. Why do you have thi ...

Environmental preparation Kafka Version: kafka_2.10-0.10.2.0 (2.10 for Scala version 0.10.2.0 for Kafka version) Official download address: http://kafka.apache.org/downloads Zookeeper Version: zookeeper-3.4.13 Official download address: http://zookeeper.apache.org/releases.html JDK Version: jdk1.8.0_ Official download address: h ...

Customize JAVA class and inherit BaseRegionObserver package com.charley.example.hbase2es; import org.apache.hadoop.hbase.Cell; import org.apache.hadoop.hbase.CellUtil; import org.apache.hadoop.hbase.CoprocessorEnvironment; import org.apache.hadoop.hbase.client.Durability; import org.apache.hadoop.hbase.client.Put; import ...

order This paper mainly studies the latency fault tolerance of rocketmq LatencyFaultTolerance rocketmq-client-4.6.0-sources.jar!/org/apache/rocketmq/client/latency/LatencyFaultTolerance.java public interface LatencyFaultTolerance<T> { void updateFaultItem(final T name, final long currentLatency, final long notAvailableDuration); ...

[CRUD is often written in the project, but in practice, I think if there is a complete code specification, it can be generated automatically and speed up the development efficiency The technical principle of code generator is not complicated. Generally, a template is written to generate a series of codes. I saw that the code genera ...