dubbo:provider

The default configuration of service provider. The corresponding class is com.alibaba.dubbo.config.ProviderConfig. This tag provider default values for <dubbo:service> and <dubbo:protocol>.

Attribute Corresponding URL parameter Type Required Default Value Function Description Compatibility
id string False dubbo Configuration association Bean Id of the protocol, can be referenced in <dubbo:service proivder=""> Above 1.0.16
protocol <protocol> string False dubbo Performance optimize Protocol name Above 1.0.16
host <host> string False Find local IP automatically Service discovery The host name of services, to specify VIP and domain, or having multiple network cards. If null, it will find local IP automatically. It's recommended to let Dubbo find local IP automatically Above 1.0.16
threads threads int False 100 Performance optimize The size of the services' Thread Pool(Fixed) Above 1.0.16
payload payload int False 88388608(=8M) Performance optimize The length limit of request and response, unit is byte Above 2.0.0
path <path> string False Service discovery Context path of the service provider, the prefix of the service path Above 2.0.0
server server string False Default is netty for dubbo protocol, servlet for http protocol Performance optimize The server implement of the protocol. For example, mina and netty for dubbo ptotocol, jetty and servlet for http protocol. Above 2.0.0
client client string False Default is netty for dubbo protocol Performance optimize The client implement of the protocol. For example, mina and netty for dubbo protocol. Above 2.0.0
codec codec string False dubbo Performance optimize Protocol encoding Above 2.0.0
serialization serialization string False Default is hessian2 for dubbo protocol, json for http protocol Performance optimize Protocol serialization, It's used when a protocol has multiple serializations. For example, dubbo protocol has 4 serializations, they are dubbo, hessian2, java and compactedjava, http protocol has json and xml. Above 2.0.5
default boolean False false Configuration association To specify the default protocol for support multiple protocols. Above 1.0.16
filter service.filter string False Performance optimize The filter name of the RPC process of the provider, use , to separate multiple filter names. Above 2.0.5
listener exporter.listener string False Performance optimize The listener name of the provider, use , to separate multiple listener names. Above 2.0.5
threadpool threadpool string False fixed Performance optimize The type of Thread Pool, fixed/cached are available Above 2.0.5
accepts accepts int False 0 Performance optimize The maximum connection count of the service provider Above 2.0.5
version version string False 0.0.0 Service discovery Service version. It's recommended to use 2 digitals such as 1.0. It's necessary to upgrade version only when the service is not compatible. Above 2.0.5
group group string False Service discovery The group of the service providers. It can distinguish services when it has multiple implements. Above 2.0.5
delay delay int False 0 Performance optimize The delay time(ms) for registering services. When set to -1, it indicates that the services will expose to registry after the Spring context is initialized Above 2.0.5
timeout default.timeout int False 1000 Performance optimize The RPC timeout(ms) Above 2.0.5
retries default.retries int False 2 Performance optimize The retry count for RPC, not including the first invoke. Please set it to 0 if don't need to retry. Above 2.0.5
connections default.connections int False 0 Performance optimize The maximum connections of every provider. For short connection such as rmi, http and hessian, it's connection limit, but for long connection such as dubbo, it's connection count. Above 2.0.5
loadbalance default.loadbalance string False random Performance optimize Strategy of load balance, random, roundrobin and leastactive are available. Above 2.0.5
async default.async boolean False false Performance optimize Asynchronous execution, not reliable. It does not block the execution thread just only ignores the return value. Above 2.0.5
stub stub boolean False false Service governance true means use the default proxy class name, which is the interface name with Local as the suffix. Above 2.0.5
mock mock boolean False false Service governance true means use the default mock class name, which is the interface name with Mock suffix. Above 2.0.5
token token boolean False false Service governance Enable token validation. Disable token if it's null. It will generate token randomly when it is enable. Above 2.0.5
registry registry string False By default, register to all registries Configuration association Register services to specified registry while having multiple registries. It is the id value of the <dubbo:registry>. If don't want to register to any registry, set it as N/A Above 2.0.5
dynamic dynamic boolean False true Service governance Whether the service is registered dynamically. If false, services will be showed as disable, you need to enable it manually. And you also need to disable it when provider shut down. Above 2.0.5
accesslog accesslog string/boolean False false Service governance true will write access log to logger. Specifying it to a log path, you can write access logs to special log file. Above 2.0.5
owner owner string False Service governance The owner of the service. It's used for service governance. Above 2.0.5
document document string False Service governance Service document URL Above 2.0.5
weight weight int False Performance optimize The weight of the service Above 2.0.5
executes executes int False 0 Performance optimize The maximum parallel execution request count per method per service for the provider. Above 2.0.5
actives default.actives int False 0 Performance optimize The maximum concurrent calls per method per service of the consumer. Above 2.0.5
proxy proxy string False javassist Performance optimize The proxy implement, jdk/javassist are available. Above 2.0.5
cluster default.cluster string False failover Performance optimize failover/failfast/failsafe/failback/forking are available. Above 2.0.5
deprecated deprecated boolean False false Service governance Mark the service is deprecated. If true, there will log an error log on the client side. Above 2.0.5
queues queues int False 0 Performance optimize The queue size of the Thread Pool. It's recommended not to specify it in order to invoke other provides rather than queueing unless you have special requirement. Above 2.0.5
charset charset string False UTF-8 Performance optimize Serialization encoding Above 2.0.5
buffer buffer int False 8192 Performance optimize The buffer size of networking IO Above 2.0.5
iothreads iothreads int False CPU + 1 Performance optimize The size of io Thread Pool(Fixed). These threads are used to receive, serialize and deserialize IO data. See threads for configuring business thread pool. It's not recommended to configure this. Above 2.0.5
telnet telnet string False Service governance Supported telnet commands, use , to separate commands. Above 2.0.5
contextpath contextpath String False Empty string Service governance
layer layer string False Service governance The biz layer of the service provider, such as biz, dao, intl:web and china:acton. Above 2.0.7

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