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PHP encryption function - md5() function encryption instance usage MD5() function is the MD5 hash value of calculator string. Using MD5 algorithm, the full name of MD5 is message digest algorithm 5. Its function is to calculate data information of different length into a 128 bit value through a series of algorithms, that is, to change a byte st ...

Yunqi information:[ Click to see more industry information]Here you can find the first-hand cloud information of different industries. What are you waiting for? Come on! Redis expired monitoring scenario In the business, there is a need to wait for a certain time to execute a certain behavior, such as closing an order after 30 minutes. There a ...

1, Create project (1) Go to https://aistudio.baidu.com/aistudio/projectoverview/public (2) Create project Click Add dataset: find these two Then create it. The following projects are generated: 2, Boot environment, select GPU version Then you will enter the following interface Under / home/aistudio/data /, the two selected compr ...

overview There are two very famous improvements in java8, one is Lambda expression and the other is Stream. Stream is a stream. Its main function is to search and filter Collection data. It is similar to SQL database operation. The difference between stream and Collection is that Collection is only responsible for storing data, not for other ...

Preface It's been a month since I joined the new company, I've finished the work at hand, and the last few days I finally have time to research the code for my old project.During the process of researching the code, I found that Spring Aop was used in the project to separate the database from reading and writing, and to learn in my own way (I d ...

Install apache yum install -y httpd Start apache systemctl start httpd Set apache to power on automatically systemctl enable httpd Access public network address to check whether apache is normal Install MySQL database wget -i http://dev.mysql.com/get/mysql57-community-release-el7-10.noarch.rpm yum -y install mysql57-community-release-el7-10 ...

A recent scenario in business is that if a user has not paid for 30 minutes after placing an order in a store, the order needs to be disposed of, either deleted or marked as invalid. Why? 1. Inventory, the user will lock an inventory after placing an order. If the user does not pay, it will occupy the inventory and affect other users'purchase. ...

Linux Installation of Redis 1. Preparing the installation package 2. Unzip the installation packagetar zxvf redis-5.0.5.tar.gz 3. Enter the folder you just unzipped and enter the make command 4. After waiting for the above process to complete, enter the make install command 5. Run. / Redis server under the redis/src / folder to start Redis ...

Link: https://www.jianshu.com/p/b8595aee06ac   CascadeType Summary Cascade refers to cascade operation, which is annotated in hibernate configuration @OneToOne，@OneToMany，@ManyToMany , @ ManyToOne properties Cascading is often used when writing triggers. The function of triggers is to ensure that the data in the associ ...

order This paper mainly studies the bootstrap controller of maxwell BootstrapController maxwell-1.25.1/src/main/java/com/zendesk/maxwell/bootstrap/BootstrapController.java public class BootstrapController extends RunLoopProcess { static final Logger LOGGER = LoggerFactory.getLogger(BootstrapController.class); private final long MAX_TX_ELEMEN ...