How to handle repeated (concurrent) requests gracefully?
In some cases, some user requests may be sent repeatedly. If it is a query operation, it will not be a big problem, but some of them involve write operations. Once repeated, it may lead to serious consequences. For example, the transaction interface may place repeated orders if repeated requests.
Repeated scenarios may be:
The hacker inter ...
Posted by pp4sale on Sun, 17 Apr 2022 01:11:51 +0300
Docker Compose: deploy SpringBoot applications (including mysql, redis, Nacos and rabbitmq)
catalogue
preface
Docker Compose installation, common commands and template files
To use Docker Compose
Deploying SpringBoot applications using Docker Compose
1. Operation configuration requirements
2. Containerized SpringBoot application
3. SpringBoot dependency service script
devecimag-docker-compose-env.yml
Parameter variable env
...
Posted by jesseledwards on Sat, 16 Apr 2022 22:12:46 +0300
Spring Boot demo Series: Redis cache
1 Overview
This article demonstrates how to use Redis as a cache in Spring Boot. The specific contents include:
Environment construction
Project construction
test
2 Environment
Redis
MySQL
MyBatis Plus
3. Redis installation
Redis installation is very simple. Take Manjaro as an example and install it directly in paru:
paru -S redis
Ubuntu, ...
Posted by rainerpl on Sat, 16 Apr 2022 04:57:19 +0300
Online education business notes
Online education business notes 03 - lecturer banner management module
1, New banner micro service
1. Create a sub module service CMS under the service module
2. Generate banner code using code generator
2.1. Alicloud address of sql file
https://cor2022314.oss-cn-beijing.aliyuncs.com/guli_cms.sql
2.2. Mybatis plus code generator
package cod ...
Posted by BobLennon on Thu, 14 Apr 2022 01:59:45 +0300
Python redis usage (notes)
Introduction to the use of Python redis (see how to use it through the source code)
redis is a key value database. Value supports string, list, set, Zset, hash and other types.
1. Install and start redis
1.1 install with brew
1. Check whether Redis is installed in the system
brew info redis
This command will display the redis informa ...
Posted by bharrison89 on Wed, 13 Apr 2022 07:01:56 +0300
Detailed explanation and deployment of Redis master-slave replication and sentinel mode under Centos
Detailed explanation and deployment of Redis master-slave replication and sentinel mode under Centos
This article will introduce the Redis master-slave replication and sentinel mode, and then set up the master-slave replication and sentinel modes with the help of different ports of a single host
The actual production environment requires ...
Posted by Awestruck on Tue, 12 Apr 2022 08:47:16 +0300
Redis has three other special types
reids launched geo location in version 3.2
The function of calculating the geographical distance between people in the two places can be used to calculate the geographical distance between people in the two places!
Related commands:
Adding data rules: two levels cannot be added directly, and can be imported at one time through java program ...
Posted by Crazy Horse on Tue, 12 Apr 2022 05:06:51 +0300
Notes on building big data components
1, Hadoop fully distributed deployment
(1) Configure network, firewall and NTP
Select VMnet8 for network adapter, VMnet8 for virtual network editor, and ip192 for subnet 168.196.0Configure IP address
vi /etc/sysconfig/network-scripts/ifcfg-ens33
BOOTPROTO=static
ONBOOT=yes
IPADDR=192.168.196.101 (virtual machine IP (address)
NETMASK=255.255. ...
Posted by alpachino on Mon, 11 Apr 2022 07:56:59 +0300
It may be the first project using RediSearch in the whole network
Actual project address newbeemall , RediSearch is integrated. The open source code has been uploaded. If it is supported, you can click star 😁RediSearch It is an application developed based on Redis that supports secondary index, query engine and full-text search. In version 2.0, take a brief look at the official website test report:Index cons ...
Posted by johnsiilver on Wed, 06 Apr 2022 19:35:54 +0300
Redisson distributed lock quick start tutorial
Qingming has nothing to do at home, and can only stay at home because of the Shanghai epidemic. It suddenly occurred to me that I planned to write a Redisson distributed lock quick start tutorial. I can only use it easily at work, so the article may be relatively simple. I hope the boss will not spray it. This article is also used as a personal ...
Posted by adam1984 on Tue, 05 Apr 2022 16:15:44 +0300