Maturity

Function maturity

Feature	Maturity	Strength	Problem	Advise	User
Concurrency control	Tested	concurrency control		On trial
Connection control	Tested	connection number control		On trial
Connecting certain provider straightly	Tested	Provider service for point-to-point connecting straightly,for test		Can be used in the test environment	Alibaba
Grouping polymerization	Tested	Return vlue of grouping polymerization, service for menu aggregation and other services	Used in special scenes	Can be used in the production environment
Parameters validator	Tested	parameters validator,JSR303 validation framework integration	Have effect on Performance	On trial	LaiWang
Result cache	Tested	result cache,for accelerating requests		On trial
Generic reference	Stable	Generic reference,remote call without a business interface class，for test platforms, open api proxy service, and so on		Can be used in the production environment	Alibaba
Generic service	Stable	Generic service,no interface class is required to implement any interface,for mock paltform		Can be used in the production environment	Alibaba
Echo test	Tested	echo test		On trial
Attachment	Stable	Attachment		Can be used in the production environment
Asynchronous call	Tested	Unavailable asynchronous call		On trial
Local call	Tested	Local call		On trial
Callback parameter	Tested	Callback parameter	Used in special scenes	On trial	Registry
Events notify	Tested	Events notify, triggering before and after the remote call is executed		On trial
Local stub	Stable	Performing part of the logic on the client side		Can be used in the production environment	Alibaba
Local mock	Stable	Forged return results, which can be executed when failed, or directly executed, for service degradation	Need support of registry	Can be used in the production environment	Alibaba
Delay publish	Stable	Delay publish,used to wait for the application to load warmup data,or wait for spring context to load completly		Can be used in the production environment	Alibaba
Lazy connect	Tested	Delay setting up connections,when invocation is set up		On trial	Registry
Stickness connections	Tested	Stickness connections,always make a request to the same provider service unless the service is down, and then switch to another		On trial	Registry
Token authorization	Tested	Token authorization, is used for service authorization	Need support of registry	On trial
Routing rule	Tested	Dynamically determining the call relationship	Need support of registry	On trial
Configuration rule	Tested	Distribute the configuration dynamically ,is the switch of business logic	Need support of registry	On trial
Accesslog	Tested	Accesslog,used to record call information	Local storage, impact performance, limited by disk size	On trial
Distributed transaction	Research	JTA/XA three phase submission transaction(TCC)	Unstable	Unavailable

Strategy maturity

Feature	Maturity	Strength	Problem	Advise	User
Zookeeper registry	Stable	Support the cluster,have various of related open source products, dubbo-2.3.3 and above versions are recommended	Depended on the stability of zookeeper	Can be used in the production environment
Redis registry	Stable	Support the client - based double - write clustering method with high performance	Please ensure server time synchronization,be used to check the expired dirty data of heartbeat	Can be used in the production environment
Multicast registry	Tested	Decentration,no registry needs to be installed	Depending on the network topology and routing, there is a risk across the server rooms	Can be used in a small range , in developement/test environment
Simple registry	Tested	Dogfooding,the registry itself is also a standard RPC service	No cluster support, may occur single-point failure	On trial
Feature	Maturity	Strength	Problem	Advise	User
Simple monitor system	Stable	Support JFreeChart statistics report	No cluster support, may occur single-point failure,but the failure does not affect the RPC call	Can be used in the production environment
Feature	Maturity	Strength	Problem	Advise	User
Dubbo protocol	Stable	Use NIO to reuse a single long connection and use a thread pool to process requests concurrently, Reduce handshake and increase concurrency efficiency, good performance	A single connection will become a bottleneck in the transmission of large files	Can be used in the production environment	Alibaba
Rmi protocol	Stable	Interoperable with native RMI, based on the TCP protocol	Occasionally the connection fails, and the stub needs to be rebuilt	Can be used in the production environment	Alibaba
Hessian protocol	Stable	Interoperable with native Hessian, based on the HTTP protocol	Hessian.jar support is required, and the overhead of HTTP short connections is large	Can be used in the production environment
Feature	Maturity	Strength	Problem	Advise	User
Netty Transporter	Stable	The NIO framework of JBoss, has good performance	A request sends two events and needs to shield useless events	Can be used in the production environment	Alibaba
Mina Transporter	Stable	Classic NIO framework，stable	The dispatch of the message queue is not timely, under great pressure, there will be FullGC	Can be used in the production environment	Alibaba
Grizzly Transporter	Tested	The NIO framework of Sun,applied in the GlassFish container	The thread pool is not extensible, and Filter can't intercept the next filter	On trial
Feature	Maturity	Strength	Problem	Advise	User
Hessian Serialization	Stable	Good performance,multilingual support (recommended)	The compatibility of various versions of Hessian is not good, it may be in conflict with the Hessian used in the application, and the Dubbo is embedded with the source code of the hessian3.2.1	Can be used in the production environment	Alibaba
Dubbo Serialization	Tested	The performance is better in a large number of POJO transmission by not transmitting the class information of POJO.	When a field is added to the parameter object, an external file declaration is required	On trial
Json Serialization	Tested	pure text,can be cross-language parsed,default using FastJson	Poor performance	On trial
Java Serialization	Stable	Java native support	Poor performance	Can be used in the production environment
Feature	Maturity	Strength	Problem	Advise	User
Javassist ProxyFactory	Stable	Bytecode generation instead of reflection,good performance(recommended)	Depending on the javassist.jar and taking up the JVM's Perm memory, the Perm may have to be larger:java -XX:PermSize=128m	Can be used in the production environment	Alibaba
Jdk ProxyFactory	Stable	JDK native support	Poor performance	Can be used in the production environment
Feature	Maturity	Strength	Problem	Advise	User
Failover Cluster	Stable	Failure automatically switches, when failure occurs, retries other servers, usually used for read operations.(recommended)	Retry will lead to longer delays	Can be used in the production environment	Alibaba
Failfast Cluster	Stable	Fast failure, only one call, failure to be reported immediately, usually used for non idempotent writing.	If a server is being restarted, a call failure may occur	Can be used in the production environment	Alibaba
Failsafe Cluster	Stable	Failsafe, when abnormal, directly ignored, usually used to write to the audit log and other operations	Call information loss	Can be used in the production environment	Monitor
Failback Cluster	Tested	Failure auto recovery, backstage record failure request, regular retransmission, usually used for message notification operations	Unreliable, lost when restart the server	Can be used in the production environment	Registry
Forking Cluster	Tested	Multiple servers are invoked in parallel, as long as one success is returned, often used for high real-time reading operations.	Need to waste more service resources	Can be used in the production environment
Broadcast Cluster	Tested	A broadcast calls all providers, one by one, and any error is wrongly reported, usually used to update the provider's local state	The speed is slow, and any false report is wrong.	Can be used in the production environment
Feature	Maturity	Strength	Problem	Advise	User
Random LoadBalance	Stable	Random probability, set random probability according to weight(recommended)	The probability of a collision on a cross section is high. When retrying, there may be an unequal instantaneous pressure.	Can be used in the production environment	Alibaba
RoundRobin LoadBalance	Stable	Round Robin,setting wheel based ratio according to the weight after the Convention	There is a slow machine accumulation request problem, and extreme circumstances may cause an avalanche	Can be used in the production environment
LeastActive LoadBalance	Stable	The least active call number, the random number of the same active number, the active number is the count difference before and after the call, making the slow machine receive less request.	Do not support the weight, in the capacity planning, not to pressure a machine oriented pressure measurement by weight capacity	Can be used in the production environment
ConsistentHash LoadBalance	Stable	The consistency hash, the same parameters always request to the same provider, when one provider hung, originally sent to the provider's request, based on virtual nodes, spread to other providers, will not cause dramatic changes	Uneven distribution of pressure	Can be used in the production environment
Feature	Maturity	Strength	Problem	Advise	User
Condition routing rule	Stable	Routing rules based on conditional expressions, simple and easy to use	There are some complex multi branch conditions, and the rules are difficult to describe	Can be used in the production environment	Alibaba
Script routing rules	Tested	Routing rules based on the script engine, powerful	No sandbox is running, scripting ability is too powerful and may be the back door	On trial
Feature	Maturity	Strength	Problem	Advise	User
Spring Container	Stable	Automatically load all Spring configurations under the META-INF/spring directory		Can be used in the production environment	Alibaba
Jetty Container	Stable	Start an embedded Jetty for reporting state	When a large number of pages are accessed, the threads and memory of the server are affected	Can be used in the production environment	Alibaba
Log4j Container	Stable	Configuring the configuration of the log4j automatically, automatically subdirecting the log files by process at the startup of multiple processes	The user can't control the configuration of log4j, inflexible	Can be used in the production environment	Alibaba