blocks|key|1515475|text|通常，您需要设计应用程序，使所有更新都通过GemFire从应用程序流向Oracle。您可以使用GemFire+CacheWriter同步更新Oracle数据库，甚至将其包装在(JTA)+transaction中，以便只有在成功更新GemFire时才更新Oracle数据库。请参阅更多详细信息here。您甚至可以使用AsyncEventQueues和Listeners异步(写后)执行更新，请参阅here和更一般的here。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1515476|您可能有其他非基于GemFire的应用程序直接访问Oracle数据库。在这种情况下，您将不得不依靠外部手段来检测数据库更新并将其提供给GemFire。当然，有很多方法可以做到这一点，例如通过定期检查数据库更新并将其放入GemFire的计划服务。将核心Spring框架的Task+Scheduling基础设施与Spring+Data+JPA+(甚至只是Spring's+JDBC+Abstraction)相结合，将大大简化这项工作。|1515477|或者，如果是我，我可能会选择Spring+XD，并设置一个"stream“，根据需要将Oracle+Database+(JDBC)+"source”与一些transformations/filters/etc混合在一起，然后设置一个GemFire+"sink“。|1515478|希望这对你有帮助，祝你好运。|1515479|干杯!|1515480|entityMap|0|LINK|mutability|MUTABLE|url|http://gemfire.docs.pivotal.io/latest/javadocs/japi/com/gemstone/gemfire/cache/CacheWriter.html|1|http://gemfire81.docs.pivotal.io/latest/userguide/index.html#developing/transactions/JTA_transactions_with_GemFire.html|2|http://gemfire81.docs.pivotal.io/latest/userguide/index.html#developing/outside_data_sources/sync_outside_data.html|3|http://gemfire81.docs.pivotal.io/latest/userguide/index.html#developing/events/implementing_write_behind_event_handler.html|4|http://gemfire81.docs.pivotal.io/latest/userguide/index.html#developing/events/event_handler_overview.html|5|http://docs.spring.io/spring/docs/current/spring-framework-reference/htmlsingle/#scheduling|6|http://projects.spring.io/spring-data-jpa|7|http://docs.spring.io/spring/docs/current/spring-framework-reference/htmlsingle/#jdbc-introduction|8|http://projects.spring.io/spring-xd/|9|http://docs.spring.io/spring-xd/docs/1.2.1.RELEASE/reference/html/#_create_a_stream|10|http://docs.spring.io/spring-xd/docs/1.2.1.RELEASE/reference/html/#jdbc-source|11|http://docs.spring.io/spring-xd/docs/1.2.1.RELEASE/reference/html/#processors|12|http://docs.spring.io/spring-xd/docs/1.2.1.RELEASE/reference/html/#gemfire-server^0|1J|B|0|2F|H|1|41|4|2|5H|4|3|5Q|4|4|0|3Q|F|5|4A|F|6|4V|P|7|0|E|9|8|U|6|9|1V|6|A|25|R|B|3H|4|C|0|0|0^^$0|@$1|2|3|4|5|6|7|1H|8|@]|9|@$A|1I|B|1J|1|1K]|$A|1L|B|1M|1|1N]|$A|1O|B|1P|1|1Q]|$A|1R|B|1S|1|1T]|$A|1U|B|1V|1|1W]]|C|$]]|$1|D|3|E|5|6|7|1X|8|@]|9|@$A|1Y|B|1Z|1|20]|$A|21|B|22|1|23]|$A|24|B|25|1|26]]|C|$]]|$1|F|3|G|5|6|7|27|8|@]|9|@$A|28|B|29|1|2A]|$A|2B|B|2C|1|2D]|$A|2E|B|2F|1|2G]|$A|2H|B|2I|1|2J]|$A|2K|B|2L|1|2M]]|C|$]]|$1|H|3|I|5|6|7|2N|8|@]|9|@]|C|$]]|$1|J|3|K|5|6|7|2O|8|@]|9|@]|C|$]]|$1|L|3|-4|5|6|7|2P|8|@]|9|@]|C|$]]]|M|$N|$5|O|P|Q|C|$R|S]]|T|$5|O|P|Q|C|$R|U]]|V|$5|O|P|Q|C|$R|W]]|X|$5|O|P|Q|C|$R|Y]]|Z|$5|O|P|Q|C|$R|10]]|11|$5|O|P|Q|C|$R|12]]|13|$5|O|P|Q|C|$R|14]]|15|$5|O|P|Q|C|$R|16]]|17|$5|O|P|Q|C|$R|18]]|19|$5|O|P|Q|C|$R|1A]]|1B|$5|O|P|Q|C|$R|1C]]|1D|$5|O|P|Q|C|$R|1E]]|1F|$5|O|P|Q|C|$R|1G]]]]

Typically, you would want to design your application such that all updates are flowing from your application through GemFire and then to Oracle. You could use a GemFire <a href="http://gemfire.docs.pivotal.io/latest/javadocs/japi/com/gemstone/gemfire/cache/CacheWriter.html" rel="nofollow">CacheWriter</a> to update the Oracle database synchronously and even wrap this in a <a href="http://gemfire81.docs.pivotal.io/latest/userguide/index.html#developing/transactions/JTA_transactions_with_GemFire.html" rel="nofollow">(JTA) transaction</a> so that the Oracle database is only updated if GemFire was successfully updated. See more details <a href="http://gemfire81.docs.pivotal.io/latest/userguide/index.html#developing/outside_data_sources/sync_outside_data.html" rel="nofollow">here</a>. You can even perform the update asynchronously (write-behind) using AsyncEventQueues and Listeners, see <a href="http://gemfire81.docs.pivotal.io/latest/userguide/index.html#developing/events/implementing_write_behind_event_handler.html" rel="nofollow">here</a> and more generally <a href="http://gemfire81.docs.pivotal.io/latest/userguide/index.html#developing/events/event_handler_overview.html" rel="nofollow">here</a>.

It is possible that you have other non-GemFire based applications that access your Oracle database directly. In this case, you are going to have to rely on external means to detect the database updates and feed them into GemFire. There are many ways to do this, of course, such as from a scheduled service that periodically checks for database updates and pulls them into GemFire. A combination of the core Spring Frameworks' <a href="http://docs.spring.io/spring/docs/current/spring-framework-reference/htmlsingle/#scheduling" rel="nofollow">Task Scheduling</a> infrastructure combined with <a href="http://projects.spring.io/spring-data-jpa" rel="nofollow">Spring Data JPA</a> (or even just <a href="http://docs.spring.io/spring/docs/current/spring-framework-reference/htmlsingle/#jdbc-introduction" rel="nofollow">Spring's JDBC Abstraction</a>) would greatly simplify this effort.

Or, if it were me, I would probably opt for <a href="http://projects.spring.io/spring-xd/" rel="nofollow">Spring XD</a>, and setup a "<a href="http://docs.spring.io/spring-xd/docs/1.2.1.RELEASE/reference/html/#_create_a_stream" rel="nofollow">stream</a>" having a Oracle Database (JDBC) "<a href="http://docs.spring.io/spring-xd/docs/1.2.1.RELEASE/reference/html/#jdbc-source" rel="nofollow">source</a>" mixed with some <a href="http://docs.spring.io/spring-xd/docs/1.2.1.RELEASE/reference/html/#processors" rel="nofollow">transformations/filters/etc</a> as necessary, and then a GemFire "<a href="http://docs.spring.io/spring-xd/docs/1.2.1.RELEASE/reference/html/#gemfire-server" rel="nofollow">sink</a>".

Hope this helps and good luck.

Cheers!

I am new to Pivotal Gemfire and configuring Gemfire to store Oracle table data for low-latency and high throughput application.

Via there are ways by which we can load the data in to Gemfire cache.

Does anyone know how can I update the data if any update happens in Oracle post Gemfire cache loading?

Any help, directions, references would be of great help.

Loading and updating Gemfire cache from Oracle table

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

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我对Pivotal Gemfire和配置Gemfire来为低延迟和高吞吐量应用程序存储Oracle表数据并不熟悉。Via有多种方法可以将数据加载到Gemfire缓存中。有谁知道如果在Oracle post Gemfire缓存加载中发生任何更新，我如何更新数据？任何帮助，方向，参考资料都会有很大的帮助。

问从Oracle表加载和更新Gemfire缓存
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