服务器里的GC会引起响应时间和大规模GC事件出现变化，可能会致使(一级缓存l1的)缓存客户端故障转移到备份的Terracotta服务器上去。

GC in the server caused variation in response times and in the event a large GC occurred, could cause Cache clients (L1's) to failover to a backup Terracotta server.

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设置了http缓存表题头之后，可以在这些网络资源上对文档进行缓存，客户端请求也可在不必返回原始服务器的情况下得以满足。

When HTTP cache headers are set, the documents can be cached on these network resources, and client requests can be satisfied without having to go back to the origin server.

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客户端可以缓存数据以改进性能。

The client can cache the data to improve performance.

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