The version is updated as follows:

feature：

• [#1966] add single send request for client
• [#2004] add config center synchronization script
• [#1997] provides a tool for generating graphics that show the state machine execution path
• [#1992] support dynamic disable
• [#1898] support dynamic config
• [#1983] add hessian codec for rpc serialization
• [#1960] Provide a visual graph designer for Seata Saga StateMachine based on GGEditor
• [#1900] Saga state language support "Retry" service when error occurred
• [#1885] add configuration for build docker image in server module
• [#1914] support where condition exists for Oracle
• [#1878] support exists in where condition
• [#1871] adapt springcloud-alibaba-seata autoconfig
• [#1844] StateMachine ServiceTask supports asynchronous execution
• [#1742] add seata-spring-boot-starter
• [#1460] support gzip compressor
• [#1492] support gRpc

bugfix：

• [#2066] fix thread unsafe which missing double check when initial eureka client
• [#2059] fix repeated rollback caused by asynchronous rollback thread
• [#2050] fix if add configListener but dataId not exist, it will throw NPE
• [#2053] fix when tableName is keyword, the insert operation will get afterImage fail
• [#2054] fix RetryRollbackingSessionManager lost Rollbacking
• [#2043] fix startup failure when dynamic proxy is turned on and use druid-spring-boot-starter
• [#1668] fix sql statement escape symbol
• [#2029] fix seata-spring-boot-starter does not work
• [#2037] fix mysql connection unable to release
• [#2032] fix Etcd3Configuration FILE_CONFIG reference incorrect
• [#1929] fix duplicated table meta cache key
• [#1996] fix auto proxying of datasource which has final modifier
• [#2001] replace deprecated jvm args
• [#1984] fix presuppose environment variable and replace base image for tool
• [#1978] fix FileTransactionStoreManagerTest failed on wins OS
• [#1953] fix get table meta failed with catalog
• [#1973] fix error of get server port in container
• [#1905] solve the lock_key length problem
• [#1927] fix class with private access constructors should not be loaded by SPI.
• [#1961] fix travis-ci exceeded the maximum log length
• [#1893] fix saga dose not delete branches when transaction ended
• [#1932] fix issue of doesn't match environment when build docker image
• [#1912] fix string.format() method formatting error
• [#1917] fix NullPointerException in DB mock during CI
• [#1909] fix xidInterceptorType is null
• [#1902] fix NPE in UndoExecutorFactory
• [#1789] fix xid header lowercase
• [#1889] fix register branch thread hang on tcc mode
• [#1813] fix TCC does not support cross-service
• [#1825] fix global status inconsistent when rollback and branch register are concurrent
• [#1850] fix server restart not recover max sessionId on db mode
• [#1879] fix jdbc parameter set null
• [#1874] fix when write the new file throw ClosedChannelException
• [#1863] fix the other of column type cause rollback fail
• [#1837] fix saga ExpressionEvaluator not support null value
• [#1810] fix statemachine def can't store to db and provide query the state logs
• [#1834] fix StateInstance log can't record output parameters
• [#1856] fix protostuff undo log get default content
• [#1845] fix when branchCommit failed,it will trigger retry of multi-tc and throw npe
• [#1858] fix Global transaction does not work
• [#1846] fix multi-thread concurrent add listener problem
• [#1839] fix filter repeated lock
• [#1768] fix problem when set useInformationSchema true and table name was keyword
• [#1796] fix unexcepted exception can roll back
• [#1805] fix connectionproxy prepareStatement not in global transaction
• [#1780] fix can't use select for update in oracle
• [#1802] changing HashMap to LinkedHashMap for deterministic iterations
• [#1793] fix auto proxy for multiple-datasource does not work
• [#1788] fix mysql can not get primary key value
• [#1764] fix jdk 11 remoteAddress is null
• [#1778] fix clean up resources in time to avoid mutual influence between unit tests
• [#1777] fix DeleteExecutor buildBeforeImageSQL keyword checker by db type

optimize：

• [#2068] optimize get database connection
• [#2056] remove non-javadoc element
• [#1775] optimize datasource manager branch rollback exception log
• [#2000] classify script to correspond directory
• [#2007] enhance test coverage of seata common
• [#1969] add ops script for Docker-Compose, Kubernetes and Helm
• [#1967] Add Dockerfile
• [#2018] optimize about ConfigFuture
• [#2020] optimize saga log output
• [#1975] Flatten Saga nested transactions
• [#1980] show the applicationId when register TM
• [#1994] rename zk configuration root path.
• [#1990] add netty config constant keys.
• [#1979] optimize get select for update recognizer
• [#1957] load keywordChecker through SPI
• [#1956] modify no available server error more clearly, and fixed NP
• [#1958] transform desinger json to statemachine standard json
• [#1951] add using organization logo
• [#1950] leak of error trace while handleAsyncCommitting
• [#1931] nacos-config.py support namespace
• [#1938] optimize the speed when batch insert or batch update
• [#1930] reduce HashMap initial size
• [#1919] force check code style
• [#1918] optimize assert throw exception
• [#1911] javadoc should be used for classes, class variables and methods.
• [#1920] use iterator to remove timeout future.
• [#1907] encapsulation determines the supported database type
• [#1903] batch query branchSession by xid list
• [#1910] all Override methods must be annotated with @override
• [#1906] add exception system exit code when rpcServer init.
• [#1897] remove clientTest it's not use
• [#1883] restructure SQLRecognizer and UndoExecutor
• [#1890] reformat saga module
• [#1798] improving method format performance
• [#1884] optimize auto closeable
• [#1869] add phase one successful reporting switch
• [#1842] add some init script
• [#1838] simplify and groom configuration items
• [#1866] server lack of error trace
• [#1867] optimization of seata-spring-boot-starter
• [#1817] add unit test for seata-tm module
• [#1823] reduce server rpc with db
• [#1835] SagaTransactionalTemplate provide reloadTransaction method
• [#1861] optimize no primary key output log
• [#1836] change "IsPersist" property value type from String to Boolean
• [#1824] remove deprecated JVM arguments in Java 11
• [#1820] adjust check style
• [#1806] format error log
• [#1815] update codecov.yml
• [#1811] adjust codecov configuration
• [#1799] reduce unnecessary synchronized
• [#1674] increase rm code coverage by db mock
• [#1710] add prefix counter for NamedThreadFactory
• [#1790] format seata server register eureka instance id
• [#1760] put message to logQueue
• [#1787] make rpc remoting log easier to read
• [#1786] simplify code
• [#1766] remove unused method
• [#1770] string splice and release lock

Thanks to these contributors for their code commits. Please report an unintended omission.

• slievrly
• long187
• jsbxyyx
• l81893521
• helloworlde
• xingfudeshi
• zjinlei
• CharmingRabbit
• objcoding
• cmonkey
• lzf971107
• ggndnn
• lightClouds917
• ruqinhu
• yuhuangbin
• anrror
• a364176773
• caohdgege
• contextshuffling
• echooymxq
• github-ygy
• iapplejohn
• jKill
• Justice-love
• lovepoem
• niaoshuai
• ph3636
• wangwei-ying
• whjjay
• yangfuhai
• zhongfuhua
• lizwmaster

Also, we receive many valuable issues, questions and advices from our community. Thanks for you all.