摘要:内嵌容器主要有三种默认容器在中,有关内嵌的默认属性配置如下,前缀为参考官方文档另外还可以通过源码来查看的相关配置属性,位于包下中,部分源码如下
Spring Boot内嵌Web容器主要有三种:
tomcat(默认)
jetty
undertow
1. tomcat容器在spring boot中,有关内嵌tomcat的默认属性配置如下,前缀为 server.tomcat (参考官方文档):
server.tomcat.accept-count=100 # Maximum queue length for incoming connection requests when all possible request processing threads are in use. server.tomcat.accesslog.buffered=true # Whether to buffer output such that it is flushed only periodically. server.tomcat.accesslog.directory=logs # Directory in which log files are created. Can be absolute or relative to the Tomcat base dir. server.tomcat.accesslog.enabled=false # Enable access log. server.tomcat.accesslog.file-date-format=.yyyy-MM-dd # Date format to place in the log file name. server.tomcat.accesslog.pattern=common # Format pattern for access logs. server.tomcat.accesslog.prefix=access_log # Log file name prefix. server.tomcat.accesslog.rename-on-rotate=false # Whether to defer inclusion of the date stamp in the file name until rotate time. server.tomcat.accesslog.request-attributes-enabled=false # Set request attributes for the IP address, Hostname, protocol, and port used for the request. server.tomcat.accesslog.rotate=true # Whether to enable access log rotation. server.tomcat.accesslog.suffix=.log # Log file name suffix. server.tomcat.additional-tld-skip-patterns= # Comma-separated list of additional patterns that match jars to ignore for TLD scanning. server.tomcat.background-processor-delay=10s # Delay between the invocation of backgroundProcess methods. If a duration suffix is not specified, seconds will be used. server.tomcat.basedir= # Tomcat base directory. If not specified, a temporary directory is used. server.tomcat.internal-proxies=10.d{1,3}.d{1,3}.d{1,3}| 192.168.d{1,3}.d{1,3}| 169.254.d{1,3}.d{1,3}| 127.d{1,3}.d{1,3}.d{1,3}| 172.1[6-9]{1}.d{1,3}.d{1,3}| 172.2[0-9]{1}.d{1,3}.d{1,3}| 172.3[0-1]{1}.d{1,3}.d{1,3} 0:0:0:0:0:0:0:1 ::1 # Regular expression that matches proxies that are to be trusted. server.tomcat.max-connections=10000 # Maximum number of connections that the server accepts and processes at any given time. server.tomcat.max-http-post-size=2MB # Maximum size of the HTTP post content. server.tomcat.max-swallow-size=2MB # Maximum amount of request body to swallow. server.tomcat.max-threads=200 # Maximum amount of worker threads. server.tomcat.min-spare-threads=10 # Minimum amount of worker threads. server.tomcat.port-header=X-Forwarded-Port # Name of the HTTP header used to override the original port value. server.tomcat.protocol-header= # Header that holds the incoming protocol, usually named "X-Forwarded-Proto". server.tomcat.protocol-header-https-value=https # Value of the protocol header indicating whether the incoming request uses SSL. server.tomcat.redirect-context-root=true # Whether requests to the context root should be redirected by appending a / to the path. server.tomcat.remote-ip-header= # Name of the HTTP header from which the remote IP is extracted. For instance, `X-FORWARDED-FOR`. server.tomcat.resource.allow-caching=true # Whether static resource caching is permitted for this web application. server.tomcat.resource.cache-ttl= # Time-to-live of the static resource cache. server.tomcat.uri-encoding=UTF-8 # Character encoding to use to decode the URI.
另外还可以通过源码来查看tomcat的相关配置属性,位于org.springframework.boot.autoconfigure包下org.springframework.boot.autoconfigure.web.ServerProperties 中,部分源码如下:
/** * Tomcat properties. */ public static class Tomcat { /** * Access log configuration. */ private final Accesslog accesslog = new Accesslog(); /** * Regular expression that matches proxies that are to be trusted. */ private String internalProxies = "10.d{1,3}.d{1,3}.d{1,3}|" // 10/8 + "192.168.d{1,3}.d{1,3}|" // 192.168/16 + "169.254.d{1,3}.d{1,3}|" // 169.254/16 + "127.d{1,3}.d{1,3}.d{1,3}|" // 127/8 + "172.1[6-9]{1}.d{1,3}.d{1,3}|" // 172.16/12 + "172.2[0-9]{1}.d{1,3}.d{1,3}|" + "172.3[0-1]{1}.d{1,3}.d{1,3}|" // + "0:0:0:0:0:0:0:1|::1"; .......(省略) /** * Maximum amount of worker threads. */ private int maxThreads = 200; /** * Minimum amount of worker threads. */ private int minSpareThreads = 10; .......(省略) /** * Maximum number of connections that the server accepts and processes at any * given time. Once the limit has been reached, the operating system may still * accept connections based on the "acceptCount" property. */ private int maxConnections = 10000; /** * Maximum queue length for incoming connection requests when all possible request * processing threads are in use. */ private int acceptCount = 100; .......(省略) }
在默认情况下,经常会关注的几个属性值:
server.tomcat.max-threads=200:最大工作线程数是200
server.tomcat.min-spare-threads=10:最小工作线程数是10
server.tomcat.max-connections = 10000:最大连接数为10000
如果需要覆盖默认的配置,可以在application.properties或者application.yml中指定相关属性值
server: tomcat: uri-encoding: UTF-8 max-threads: 20 min-spare-threads: 5 max-connections: 10002. jetty容器
有关jetty的默认属性配置如下:
server.jetty.acceptors=-1 # Number of acceptor threads to use. When the value is -1, the default, the number of acceptors is derived from the operating environment. server.jetty.accesslog.append=false # Append to log. server.jetty.accesslog.date-format=dd/MMM/yyyy:HH:mm:ss Z # Timestamp format of the request log. server.jetty.accesslog.enabled=false # Enable access log. server.jetty.accesslog.extended-format=false # Enable extended NCSA format. server.jetty.accesslog.file-date-format= # Date format to place in log file name. server.jetty.accesslog.filename= # Log filename. If not specified, logs redirect to "System.err". server.jetty.accesslog.locale= # Locale of the request log. server.jetty.accesslog.log-cookies=false # Enable logging of the request cookies. server.jetty.accesslog.log-latency=false # Enable logging of request processing time. server.jetty.accesslog.log-server=false # Enable logging of the request hostname. server.jetty.accesslog.retention-period=31 # Number of days before rotated log files are deleted. server.jetty.accesslog.time-zone=GMT # Timezone of the request log. server.jetty.max-http-post-size=200000B # Maximum size of the HTTP post or put content. server.jetty.selectors=-1 # Number of selector threads to use. When the value is -1, the default, the number of selectors is derived from the operating environment.
默认情况下,spring-boot-starter-web 使用的容器为 tomcat,如果想要替换成jetty,只需要在pom文件中移除tomcat依赖,然后引入jetty依赖即可
3. undertow容器org.springframework.boot spring-boot-starter-web org.springframework.boot spring-boot-starter-tomcat org.springframework.boot spring-boot-starter-jetty
有关内嵌的undertow的默认属性配置如下:
server.undertow.accesslog.dir= # Undertow access log directory. server.undertow.accesslog.enabled=false # Whether to enable the access log. server.undertow.accesslog.pattern=common # Format pattern for access logs. server.undertow.accesslog.prefix=access_log. # Log file name prefix. server.undertow.accesslog.rotate=true # Whether to enable access log rotation. server.undertow.accesslog.suffix=log # Log file name suffix. server.undertow.buffer-size= # Size of each buffer. server.undertow.direct-buffers= # Whether to allocate buffers outside the Java heap. The default is derived from the maximum amount of memory that is available to the JVM. server.undertow.eager-filter-init=true # Whether servlet filters should be initialized on startup. server.undertow.io-threads= # Number of I/O threads to create for the worker. The default is derived from the number of available processors. server.undertow.max-http-post-size=-1B # Maximum size of the HTTP post content. When the value is -1, the default, the size is unlimited. server.undertow.worker-threads= # Number of worker threads. The default is 8 times the number of I/O threads.
主要关注的两个属性:
server.undertow.io-threads:默认情况下IO线程数等于CPU处理器个数
server.undertow.worker-threads:默认情况下Worker线程数等于IO线城数的8倍
同上,如果想要使用undertow容器,只需要在pom文件中移除tomcat依赖,然后引入undertow依赖即可
org.springframework.boot spring-boot-starter-web org.springframework.boot spring-boot-starter-tomcat org.springframework.boot spring-boot-starter-undertow
参考资料:
https://docs.spring.io/spring...
https://github.com/spring-pro...
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