是什么构成了现代商品集群？
如今，使用商用硬件实现 TB 分布式内存缓存是否是最具成本效益的方法？ 什么可以归类为商品硬件？
Would would be the most cost effective way of implementing a terabyte distributed memory cache using commodity hardware these days? What would class as a piece of commodity hardware?
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商品硬件被认为
有许多主板可以容纳 8 或 16 GB RAM。 能够容纳 32 GB 甚至 64 GB 的服务器主板越来越少。
但它们符合商品的定义，因此可以制作成非常大的集群，花费非常大的钱。
但请注意，在许多访问模式中，条带 RAID HD 阵列的速度并不比千兆位以太网链路慢多少 - 因此 RAM 集群可能不会有显着的改进（延迟除外），具体取决于您实际使用它的方式。
-亚当
Commodity hardware is considered hardware that
There are many motherboards that can hold 8 or 16 GB of RAM. Fewer server motherboards can hold 32 and even 64GB.
But they fit the definition of commodity, therefore can be made into very large clusters for a very large sum of money.
Note, however, that in many access patterns a striped RAID HD array doesn't go much slower than a gigabit ethernet link - so a RAM cluster might not have significant improvement (except in latency) depending on how you're actually using it.
-Adam