數據虛擬化平臺 Teiid 7.6 Beta1 發布

Teiid是一個數據虛擬化系統，讓應用程序使用來自多個異構數據存儲的數據。

Teiid由一堆工具，組件和創建和執行雙向數據的服務所組成。通過抽象和聯合、數據存取和集成的實時分布式數據源，無需進行復制或以其他方式移動數據系統的紀錄。
項目地址：http://www.jboss.org/teiid

7.6 Beta1 發布了，該版本在內存管理方面做了很多改進，包括：

• 修正的內存緩沖區 - A serialization buffer will be allocated to increase disk through-put.  It is also managed as a second tier cache.  You may optionally configure the size and set it to use off-heap memory - which is especially useful for dealing with larger amounts (typically 32BG+) of memory from the VM.  The memory buffer also allows for better disk usage based upon fixed allocation blocks vs. the old Teiid scheme which used a file per table/tuple buffer.
• 并發 LRFU - the main eviction algorithm was further refined to be concurrent and to better handle table work loads.
• 許多性能的提升 - batch size estimation, serialization, and value type resolution were all improved.

另外你還可以配置默認的查詢超時時間，包括服務器端和 VDB。