Scope of Spring Bean
The scope of Spring's Bean includes the following:
- (1) singleton: Singleton mode, a BeanFactory has and only one instance.
- (2) prototype: Prototype mode, every time a Bean is obtained from the BeanFactory, a new instance will be created. (Multiple examples, principle clone copies of prototypes)
- (3) request: A new bean is created for each request request, and this scope is only valid in the case of a web-based Spring ApplicationContext.
- (4) session: Each session request will create a new bean, and this scope is only valid in the case of web-based Spring ApplicationContext.
- (5) application: All sessions share a bean, and this scope is only valid in the case of web-based Spring ApplicationContext.
When writing code, you usually use the ApplicationContext container to enjoy more functions and convenience.
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| \ | open source project name | dependent type | version number | describe |
|---|---|---|---|---|
| 1 | spring-boot-starter-trie | pom | 1.0.0-SNAPSHOT | The query speed under specific requirements far exceeds that of open source search tools, and the B+ tree under innodb or the inverted index in ES cannot compare with it. |
| 2 | spring-boot-starter-trie | jar | 1.0.0-M1 | Provides SpringCloud-based service nodes, which can be used for service discovery through the Nacos registry, realizing dynamic expansion and contraction of the tree, and dynamic online and offline services. |
| 3 | Data-Provider | pom | 1.0.0-SNAPSHOT | It provides queries from multiple data sources and data type synchronization. As a Jar, it can rely on dynamically providing data on other services. |