Spring Boot 4.0.0 RC2 Configuration Changelog

Configuration property changes between 4.0.0-RC1 and 4.0.0-RC2

Deprecated in 4.0.0-RC2

None.

Added in 4.0.0-RC2

Key	Default value	Description
management.brave.tracing.span-joining-supported	false	Whether the propagation type and tracing backend support sharing the span ID between client and server spans.
management.logging.export.otlp.enabled	true	Whether auto-configuration of logging is enabled to export logs over OTLP.
management.opentelemetry.logging.export.otlp.compression	none	Method used to compress the payload.
management.opentelemetry.logging.export.otlp.connect-timeout	10s	Connect timeout for the OTel collector connection.
management.opentelemetry.logging.export.otlp.endpoint		URL to the OTel collector’s HTTP API.
management.opentelemetry.logging.export.otlp.headers		Custom HTTP headers you want to pass to the collector, for example auth headers.
management.opentelemetry.logging.export.otlp.timeout	10s	Call timeout for the OTel Collector to process an exported batch of data.
management.opentelemetry.logging.export.otlp.transport	http	Transport used to send the logs.
management.opentelemetry.tracing.export.include-unsampled	false	Whether unsampled spans should be exported.
management.opentelemetry.tracing.export.max-batch-size	512	Maximum batch size for each export.
management.opentelemetry.tracing.export.max-queue-size	2048	Maximum number of spans that are kept in the queue before they will be dropped.
management.opentelemetry.tracing.export.otlp.compression	none	Method used to compress the payload.
management.opentelemetry.tracing.export.otlp.connect-timeout	10s	Connect timeout for the OTel collector connection.
management.opentelemetry.tracing.export.otlp.endpoint		URL to the OTel collector’s HTTP API.
management.opentelemetry.tracing.export.otlp.headers		Custom HTTP headers you want to pass to the collector, for example auth headers.
management.opentelemetry.tracing.export.otlp.timeout	10s	Call timeout for the OTel Collector to process an exported batch of data.
management.opentelemetry.tracing.export.otlp.transport	http	Transport used to send the spans.
management.opentelemetry.tracing.export.schedule-delay	5s	The delay interval between two consecutive exports.
management.opentelemetry.tracing.export.timeout	30s	Maximum time an export will be allowed to run before being cancelled.
management.tracing.export.otlp.enabled	true	Whether auto-configuration of tracing is enabled to export OTLP traces.
management.tracing.export.zipkin.connect-timeout	1s	Connection timeout for requests to Zipkin.
management.tracing.export.zipkin.enabled	true	Whether auto-configuration of tracing is enabled to export Zipkin traces.
management.tracing.export.zipkin.encoding	json	How to encode the POST body to the Zipkin API.
management.tracing.export.zipkin.endpoint	http://localhost:9411/api/v2/spans	URL to the Zipkin API.
management.tracing.export.zipkin.read-timeout	10s	Read timeout for requests to Zipkin.
spring.jackson.xml.read		Jackson on/off token reader features that are specific to XML.
spring.jackson.xml.write		Jackson on/off token writer features that are specific to XML.
spring.jersey.application-path		Path that serves as the base URI for the application.
spring.jersey.filter.order	0	Jersey filter chain order.
spring.jersey.init		Init parameters to pass to Jersey through the servlet or filter.
spring.jersey.servlet.load-on-startup	-1	Load on startup priority of the Jersey servlet.
spring.jersey.type	servlet	Jersey integration type.
spring.test.mockmvc.htmlunit.url	http://localhost	URL to use when HtmlUnit expands relative paths.
spring.test.mockmvc.htmlunit.webclient.enabled	true	Whether HTMLUnit’s WebClient should be auto-configured when it’s on the classpath.
spring.test.mockmvc.htmlunit.webdriver.enabled	true	Whether Selenium’s WebDriver should be auto-configured when it’s on the classpath.

Removed in 4.0.0-RC2

Key	Replacement	Reason
management.opentelemetry.logging.export.compression
management.opentelemetry.logging.export.connect-timeout
management.opentelemetry.logging.export.enabled
management.opentelemetry.logging.export.endpoint
management.opentelemetry.logging.export.headers
management.opentelemetry.logging.export.timeout
management.opentelemetry.logging.export.transport
management.otlp.tracing.compression	management.opentelemetry.tracing.export.otlp.compression
management.otlp.tracing.connect-timeout	management.opentelemetry.tracing.export.otlp.connect-timeout
management.otlp.tracing.endpoint	management.opentelemetry.tracing.export.otlp.endpoint
management.otlp.tracing.export.enabled	management.tracing.export.otlp.enabled
management.otlp.tracing.headers	management.opentelemetry.tracing.export.otlp.headers
management.otlp.tracing.timeout	management.opentelemetry.tracing.export.otlp.timeout
management.otlp.tracing.transport	management.opentelemetry.tracing.export.otlp.transport
management.tracing.brave.span-joining-supported	management.brave.tracing.span-joining-supported
management.tracing.enabled	management.tracing.export.enabled
management.tracing.opentelemetry.export.include-unsampled	management.opentelemetry.tracing.export.include-unsampled
management.tracing.opentelemetry.export.max-batch-size	management.opentelemetry.tracing.export.max-batch-size
management.tracing.opentelemetry.export.max-queue-size	management.opentelemetry.tracing.export.max-queue-size
management.tracing.opentelemetry.export.schedule-delay	management.opentelemetry.tracing.export.schedule-delay
management.tracing.opentelemetry.export.timeout	management.opentelemetry.tracing.export.timeout
management.zipkin.tracing.connect-timeout	management.tracing.export.zipkin.connect-timeout
management.zipkin.tracing.encoding	management.tracing.export.zipkin.encoding
management.zipkin.tracing.endpoint	management.tracing.export.zipkin.endpoint
management.zipkin.tracing.export.enabled	management.tracing.export.zipkin.enabled
management.zipkin.tracing.read-timeout	management.tracing.export.zipkin.read-timeout
spring.freemarker.enabled		No longer required.
spring.groovy.template.enabled		No longer required.
spring.mustache.enabled		No longer required.
spring.test.mockmvc.webclient.enabled	spring.test.mockmvc.htmlunit.webclient.enabled
spring.test.mockmvc.webdriver.enabled	spring.test.mockmvc.htmlunit.webdriver.enabled
spring.thymeleaf.enabled		No longer required.