Uptime needs to be measured from the outside in, and according to the availability of the service, not the individual servers comprising that pool.
正常工作时间需要从外至里的去衡量，并且根据服务的可用性去衡量，而不仅仅是几个服务器组成的联合。
These benefits include the ready availability of customers, specialised suppliers, a pool of skilled Labour, or the tricks of the trade that a firm can learn almost by osmosis from its neighbours.
这些好处包括现成的顾客、专门的供应商、大量的技工或一家公司几乎可以潜移默化地从其邻近的公司那里学到经营之道。
Obviously, with availability of physical memory on the database server, a high buffer pool hit ratio is always better for your database performance.
显然，随着数据库服务器上物理内存的使用，高缓冲池命中率对于您的数据库性能而言始终比较好。
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