spring data cassandra example

Spring dynamic multi-data source instance Demo and spring dynamic instance demo Recently, many people have consulted Spring on how to configure multiple data sources. It is troublesome to answer the questions one by one, and the configuration in previous blog posts is also p

{ @Autowired private UserRepository userRepository; @RequestMapping("/") public ModelAndView index() { userRepository.save(new User("老王",18,"123456")); ModelAndView modelAndView = new ModelAndView("/index"); modelAndView.addObject("dataSize", userRepository.findAll().size()); return modelAndView; } } So far, the integrated Spring Data JPA has all been

Mongodb integrates with Spring by referring to Spring-data-mongodb's operations on Mongodb in Spring official documents. A simple example is provided to prevent forgetting. Documentation address: docs. spring. iospring-datadata-mo

; C. Data Source of the connection pool; Next we will talk about how to obtain the connected data source from the connection pool! (Point c) Code for configuring Bean in context: Note: The JDBC driver data source does not have a pool concept, so there is no pool attribute configuration! Now, we have established a connection to the database through the

The support for hibernate in spring is very powerful. We can see from a simple example that we will also discuss the so-called lightweight container. First, we need to configure the data source. Generally, we have two methods to obtain the connection. First, we need to write the data source by ourselves.CodeObtain

feature repository typically queries the underlying data store. Springdata these queries into a four-step process:1. Declare an interface extension library and type it, or one of its child domain classes and ID types, it will handle.Interface Personrepository extends Repository2, the method of new conditional query on the interface.Interface Personrepository extends RepositoryList}3. To create proxy instances for these interfaces, you can pass Javaco

Spring AOP dynamic multi-data source instance details, Spring AOP Examples of Spring AOP dynamic multi-data sources When read/write splitting is used in the project, we will encounter multiple data sources. Multiple

/huangz1990/annotated_redis_sourceJedis:Jedis is a Java-oriented client for Redis, which provides many interfaces for Java language calls. Can be downloaded on the Redis official website, of course, there are some open source enthusiasts to provide clients, such as Jredis, SRP, etc., recommend the use of Jedis.Spring Data RedisThe SDR is spring's official launch, which is a sub-framework of the Spring Frame

The configuration of the data source can follow the example of the Spring boot Learning (vii) Web application using the JdbcTemplate Datasourceconfig implementation in a multi-data source configuration. Add a new JPA configuration to the first data source, noting two notes w

Here is an article that is very clear: Spring boot multi-data source configuration and useHeterogeneous database multi-source supportFor example, in our project, we need support for MySQL, as well as a query for MongoDB.Entity classes declare @Entity relational database support types, declared @Document as MongoDB support types, and different

database connection pool selection algorithm By default, database connections can be configured automatically using the DataSource pool. Here is an algorithm for selecting a specific implementation: because of the performance and concurrency of the Tomcat data source connection pool, we always use it preferentially when Tomcat is available. If HIKARICP is available, we will use it. If Commons DBCP is available, we will use it, but it is not recommend

In this example, the project of the previous blog is rewritten by integrating MyBatis with Spring. To this end, copy the jar packages used by the project to the lib directory of the project. Readers can download the project in this example at the "attachment Download" section below this article. Therefore, the jar package to be used is not described here due to t

existing spring technologies. For example, it uses spring batch to support workflow scheduling and export use cases, uses spring integration to support streaming, and also uses a variety of enterprise application integration patterns. Other key spring products include: Usin

' testcompile ' org.springframework.boot: Spring-boot-starter-test '}2.2 Main entry procedurePackage Com.cnblogs.yjmyzz.spring.cloud.study;import Org.springframework.boot.springapplication;import Org.springframework.boot.autoconfigure.springbootapplication;import org.springframework.cloud.netflix.eureka.server.enableeurekaserver;/** * Created by the Bodhi tree under the Poplar on 2017/6/17. */@SpringBootApplication @enableeurekaserverpublic class

《Integration of Spring 4 (including MVC, Context, ORM) + MyBatis 3 ExampleArticle briefly introduces the latest version of the Spring MVC, IOC, MyBatis ORM integration and declarative transaction processing. Now we need to integrate the cache, and we're using Redis, and this article will cover the integration of Redis cache + Spring on the basis of this

for injection, (provided by the Java EE) by default assembly by name, @Resource (name= "Beanname")@Autowired for Injection, (Srping provided) by default assembly by type@Transactional (Rollbackfor={exception.class}) transaction Management@ResponseBody@Scope ("prototype") to set the scope of the beanand provides: Data binding support, @NumberFormatannotation support, @DateTimeFormat support, @Valid support, read/write XML support (JAXB), read/write JS

rules, personally think there is not much need to change this default rule, that is, the root directory/j_ Spring_security_check's network request, will be as a login request, and get j_username and J_password as parameters to the user name password matching, this time spring will give j_username to a provider, The task of this provider is to return an object that contains the user name, password, permission (which can be an array), based on the user

protocol features in the development of the servlet, it will encounter more or less confusing problems, especially when encountering some complex special requests: For example, File upload, return special file format to the browser, it is not very convenient to use servlet development , servlet development also has a problem may be often overlooked, is the type of data requested to convert, HTTP protocol t

in Redis,key is our custom generated Key,value is the serialized object, this key will be placed in the key named Provinc Ecities~keys Key-value Storage, refer to the "Provincecities method in Redis cache condition". Provincecities~keys can be deleted by REDIS-CLI using the Del command, but the cache for each province is not cleared. CacheManager must set the cache expiration time, otherwise the cached object will never expire, so for the reasons above, avoid some wild

Spring boot rest example Introduction: This article will help you use Spring Boot to create simple REST services. You will learn What is a REST service? How to Use Spring Initializr to guide the creation of Rest service applications? How do I create a REST service to retrieve student-registered courses? How do