The memory is too bad, I still have to write a tutorial to summarize the tutorial on configuring javaweb. This tutorial is also a synthesis of many tutorials on the Internet.
Server: Alibaba
Author: Simo
Read the Topic metadata saved by ZooKeeper
Read topic metadata saved by zookeeper Table of Contents 1. There are the following problems 2. Solutions 3. Code 3.1. KafkaHelper class< /li> 3.2. The complete code of main.cc 1 There are
CentOS 7, install Nginx using YUM (easy)
When using the following command to install Nginx, it is found that the installation cannot be successful
yum install -y nginx Required Do a little bit of processing.
Execute the follo
Springboot connection redis for crud
Springboot connects redis for CRUD:
1. Add the following dependencies:
org.springframework.boot
spring-boot-starter-data-redis
redis.clients
jedis
2.9.0
2. Configure r
In-depth Spring Cache use and integration (attachment analysis)
In-depth understanding of the use and integration of Spring Cache (with source code analysis) Personal development environment
Java environment: Jdk1.8.0_60
Compiler: IntelliJ IDEA 201
Handling web request using SpringMVC
A request carries user information from the web to the background, and the life cycle of a request from start to end:
Request => Servlet => (Find the appropriate Controller based on Handler M
ZooKeeper Monitoring (Zabbix)
I have been monitoring, these middleware Zookeeper, Kafka…, usually only know a little bit of fur, they have been built and deployed, and have not been used. , Generally it is used by big data st
High concurrent cache consistency problem
When the data is read:
Check the cache first, and the cache can’t check the database, and then put the checked results in the cache. These are basically not controversial.
But when the
[ZooKeeper_kafka] ZooKeeper and Kafka installation
1. wget https://mirrors.cnnic.cn/apache/zookeeper/stable/zookeeper-3.4.12.tar.gz
tar -zxvf zookeeper-3.4.12. tar.gz Unzip
2. cd zookeeper-3.4.12
cp -rf conf/zoo_sample.cfg conf /z
Installation deployment of Zookeeper + Kafka Cluster
Preparation work Upload zookeeper-3.4.6.tar.gz, scala-2.11.4.tgz, kafka_2.9.2-0.8.1.1.tgz, slf4j-1.7.6.zip to the /usr/local directory
Unzip the zookeeper installation package
# tar -zx