Programmer Think

1, Course final release information display - back end 1. Entity class - used to encapsulate the data displayed on the page @ApiModel(value = "Course final release") @Data public class CoursePublishVo implements Serializable { private static final long serialVersionUID = 1L; //Course title private String title; //Course cover ...

Resource constraints Time limit: 1.0s memory limit: 512.0MB Problem description Professor Tom is teaching postgraduates a course on genes. One thing gives him a headache: there are thousands of base pairs on a chromosome, which number from 0 to millions, tens of millions, or even hundreds of millions. For example, when explaining the base at ...

Five basic data types of Redis For redis, all key s are strings. The basic data structure of Redis we usually talk about is the data type of stored value. The five common data types in Redis are: String, List, Set, Zset and Hash. structure type Value stored by structureStructure reading and writing abilityString stringCan be string, float ...

background MinIO is the world's leading object storage pioneer, with read / write speeds of 183 GB / s and 171 GB / s on standard hardware. MinIO is used as the main storage of cloud native applications. Compared with traditional object storage, cloud native applications need higher throughput and lower latency. By adding more clusters, you ca ...

String Used in Java java.lang.String class represents string: Before Java 9, the bottom layer used char [] to store character data Starting from Java 9, the bottom layer uses byte [] to store character dataAll String literals (such as "abc") are instances of the String classOnce a String object is created, its character content ...

Spring Transaction learning II. Spring Transaction management Record the learning of Spring and database things. The learning of Spring things here is in the form of full annotation Mind map: 1. Configure transaction manager In the configuration of Spring annotation starting things, if you want to enable things, you need to co ...

Introduction to Transactional failure scenarios When the modifier of the first Transactional annotation annotation method is non-public, @ Transactional annotation will not work. For example, the following code. Define an incorrect @ Transactional annotation implementation and modify a default accessor method /**  * @author zhoujy  **/ @Comp ...

catalogue 1, Sequential structure 2, Branching structure 🍓 if statement 🍓 switch statement 3, Cyclic structure 🍓 while loop 🍓break 🍓continue 🍓 for loop 🍓 do...while() loop 4, Input and output in Java 🍓 Output to console 🍓 Format character 🍓 Input from keyboard V. summary 🚆 Brief description: Because the content ...

1. Introduction RedisTemplate is the most advanced Abstract client provided by Spring Data Redis to users. Users can directly perform a variety of operations through RedisTemplate. 1.1 class inheritance public class RedisTemplate<K, V> extends RedisAccessor implements RedisOperations<K, V>, BeanClassLoaderAware { } RedisAccesso ...

Recent projects have to dock a web service-style interface, because this type has never been docked before, so this time I have looked up some materials to learn 1. Brief introduction of Webservice WebService is a remote invocation technology that spans programming languages and operating system platforms. Through the standard communication p ...