20.1 Property defaults

Several of the libraries supported by Spring Boot use caches to improve performance. For example, Thymeleaf will cache templates to save repeatedly parsing XML source files. Whilst caching is very beneficial in production, it can be counter productive during development. If you make a change to a template file in your IDE, you’ll likely want to immediately see the result.

Cache options are usually configured by settings in your application.properties file. For example, Thymeleaf offers the spring.thymeleaf.cache property. Rather than needing to set these properties manually, the spring-boot-devtools module will automatically apply sensible development-time configuration.

	Tip
For a complete list of the properties that are applied see DevToolsPropertyDefaultsPostProcessor.