General Configuration

Sentinel provides the following ways to configure the common items:

• JVM -D parameter
• properties file (since 1.7.0)

The project.name item should be configured with JVM -D parameter, while other items support both approaches.

Users can configure the path of the properties file via the -Dcsp.sentinel.config.file property item, which also supports files in classpath (such as classpath:sentinel.properties). Sentinel will attempt to read the configuration from the classpath:sentinel.properties file (the default charset is UTF-8).

Note: If you're using Spring Boot or Spring Cloud, you may leverage Spring Cloud Alibaba Sentinel to provide Sentinel configuration in your Spring config file directly.

Sentinel Core

Basic configuration items

Item	Description	Type	Default Value	Required	Notes
project.name	The name of your microservice	String	null	no	It's recommended to provide the name.
csp.sentinel.app.type	The type of your microservice	int	0 (APP_TYPE_COMMON)	no	introduced since 1.6.0
csp.sentinel.metric.file.single.size	The max size of single metric log file	long	52428800 (50MB)	no
csp.sentinel.metric.file.total.count	The max amount of metric log files	int	6	no
csp.sentinel.statistic.max.rt	Maximum allowed response time (in ms). If exceeding this value, it will be recorded as this value.	int	4900	no	introduced since 1.4.1
csp.sentinel.spi.classloader	The SPI classloader mechanism	String	default	no	If the value is context, then Sentinel will use the thread context classloader as the SPI classloader.

Logging configuration items

Item	Description	Type	Default Value	Required	Notes
csp.sentinel.log.dir	The log directory	String	${user.home}/logs/csp/	no	introduced since 1.3.0
csp.sentinel.log.use.pid	Whether the log files include the process ID	boolean	false	no	introduced since 1.3.0
csp.sentinel.log.output.type	The output destination of the record logs (console for the terminal, file for the file)	String	file	no	introduced since 1.6.2