Saga Started Flight Started Flight Ended Hotel Started Hotel Ended Car Started Car Ended Payment Started Payment Ended Saga Ended EndSaga Saga request StartSaga Saga Started Flight Started Flight Flight Ended Hotel Started Hotel Aborted EndSaga Saga request Flight Compensated Saga Ended Transaction Rollback 对服务的要求 • 幂等 T = T T … T car rental saga T T' time • 可交换补偿 T C = T C T 对服务的要求 Saga ServiceComb Saga演进 Saga Coordinator Saga Saga Saga ID: x Saga Log Saga Started T1 Started T1 Ended T2 Started params { T1:[a,b], C1:[c,d], ... } config { T1: name, path, C1:name, path, ...

系统架构 – 基于图形 requests { T1:[a,b], C1:[c,d], ... } Caller 1 2 3 Saga Log Saga Started T1 Started T1 Ended T2 Started Service Registry Transport Saga Execution Component GraphBuilder FromJsonFormat actor模型 requests { T1:[a,b], C1:[c,d], ... } Caller 1 2 3 Saga Log Saga Started T1 Started T1 Ended T2 Started Service Registry Transport Saga Execution Component ActorBuilder FromJsonFormat Flight Started Saga Flight Ended Saga Started 案例 – 正常情况 request Saga Started Flight Started Hotel Started Saga Flight Ended 案例 – 正常情况 request Hotel Ended Saga Started Flight Started Hotel

Saga Started Flight Started Flight Ended Hotel Started Hotel Ended Car Started Car Ended Payment Started Payment Ended Saga Ended EndSaga Saga request StartSaga Saga Started Flight Started Flight Flight Ended Hotel Started Hotel Aborted EndSaga Saga request Flight Compensated Saga Ended Transaction Rollback 对服务的要求 • 幂等 T = T T … T car rental saga T T' time • 可交换补偿 T C = T C T 对服务的要求 Saga ServiceComb Saga演进 Saga Coordinator Saga Saga Saga ID: x Saga Log Saga Started T1 Started T1 Ended T2 Started params { T1:[a,b], C1:[c,d], ... } config { T1: name, path, C1:name, path, ...

privileges in order to start apache, so that it can bind to this privileged port. Once the server has started and performed a few preliminary activities such as opening its log files, it will launch several The status module will also use a G to indicate those children which are still serving requests started before the graceful restart was given. At present there is no way for a log rotation script using configuration files. Changes to the main configuration files are only recognized by Apache when it is started or restarted. The server also reads a file containing mime document types; the filename is set by

privileges in order to start apache, so that it can bind to this privileged port. Once the server has started and performed a few preliminary activities such as opening its log files, it will launch several The status module will also use a G to indicate those children which are still serving requests started before the graceful restart was given. At present there is no way for a log rotation script using configuration files. Changes to the main configuration files are only recognized by Apache when it is started or restarted. The server also reads a file containing mime document types; the filename is set by

privileges in order to start apache, so that it can bind to this privileged port. Once the server has started and performed a few preliminary activities such as opening its log files, it will launch several The status module will also use a G to indicate those children which are still serving requests started before the graceful restart was given. At present there is no way for a log rotation script using configuration files. Changes to the main configuration files are only recognized by Apache when it is started or restarted. The server also reads a file containing mime document types; the filename is set by

privileges in order to start apache, so that it can bind to this privileged port. Once the server has started and performed a few preliminary activities such as opening its log files, it will launch several The status module will also use a G to indicate those children which are still serving requests started before the graceful restart was given. At present there is no way for a log rotation script using configuration files. Changes to the main configuration files are only recognized by Apache when it is started or restarted. The server also reads a file containing mime document types; the filename is set by

privileges in order to start apache, so that it can bind to this privileged port. Once the server has started and performed a few preliminary activities such as opening its log files, it will launch several The status module will also use a G to indicate those children which are still serving requests started before the graceful restart was given. At present there is no way for a log rotation script using configuration files. Changes to the main configuration files are only recognized by Apache when it is started or restarted. The server also reads a file containing mime document types; the filename is set by

_______________________________________________________________ | URL: http://192.168.41.130/ | Started: Thu Apr 17 13:49:37 2014 [!] The WordPress 'http://192.168.41.130/readme.html' file exists [+] _______________________________________________________________ | URL: http://192.168.41.130/ | Started: Thu Apr 17 13:50:49 2014 [!] The WordPress 'http://192.168.41.130/readme.html' file exists [+] _______________________________________________________________ | URL: http://192.168.41.130/ | Started: Thu Apr 17 13:54:51 2014 [!] The WordPress 'http://192.168.41.130/readme.html' file exists [+]

和微服务实践 分布式Saga系统 Saga Coordinator Saga Saga Saga ID: x Saga Log Saga Started T1 Started T1 Ended T2 Started params { T1:[a,b], C1:[c,d], ... } config { T1: name, path, C1:name Pre Processor Alpha Post Processor Transaction A started A ended B started B ended Request (tx id) Request Interceptor Saga started 2018 Building Microservice NO.1 深圳站： Cloud Native 架构下的