我正在将Java EE的定期申请汇集到jbos7上,该申请将在数据级使用JPA。 我愿提出这一申请,这样它就能够随负荷而扩大。 虽然如何扩大网络等级是很明确的:创建更多的机器,将其抛在负荷平衡器后,但扩大数据级的情况却不那么明显。
我可能把我的数据库(MySQL)集中起来。 在此之前,JPA层没有污染。 理想的情况是,日本邮政管理处将扩大规模,在MySQL的支持下,使用(过滤)记忆。
当我看一看时,围绕《联合行动计划》扩大范围的所有信息似乎都是3-4岁。 人们谈论的是教ache、 me和fin。 我不清楚这是否仍然有效。
一个人能够告诉我 Java EE集群和规模的艺术状况,特别是在数据层。
各种教学战略仍然是扩大人民军/人民解放联盟(你基本上称你最受欢迎的选择)的方法。 我知道,自4至5年以来,这一领域没有发生任何特殊的情况。 提到的另一个选择是JBoss Cache。 因此,JPA/Hibernate的二级Cache在这方面仍然适用。
为什么在这方面没有进展? 我的野心是,首先,在需要高业绩的领域,需要可衡量应用的所有人往往无视人民军和解放党。 通常,人们在春天框架(JDBCT)的助手和交易管理中穿着Q。 然后,可扩展性是这方面的数据库能力问题。
另一个趋势是使用无SQL数据库。 解决办法有:MongoDB、CouchoDB、Casses、Redis等等。 这些通常是谷歌大刀,如关键价值储存(这种储存过于简单化,但这种做法背后的想法越来越少),如果你接受限制,它们的规模就会缩小(有关不再容易管理等等)。
There are many solutions, the two main categories of solutions are:
EclipseLink支持数据分立,以便在一套数据库中检索数据。
see: http://java-persistence-performance.blogspot.com/2011/05/data-partitioning-scaling-database.html
你也可以使用MySQL组,
see: http://www.mysql.com/products/cluster/
Oracle TopLink Grid 提供EclipseLink JPA支持与Oracle取得一致,作为分布的切身,
see: http://www.oracle.com/technetwork/middleware/ias/tl-grid-097210.html
EclipseLink scache支持通过切身协调进行分组
see: http://wiki.eclipse.org/EclipseLink/Examples/JPA/CacheCoordination
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