| For performance tuning it is possible with servlets to cache common data in memory to avoid unnecessary and costly database lookups. |
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| Other connection filtering techniques include reverse lookups, verifying computer names and verifying the from email address. |
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| This makes lookups faster, he said, which means the databases can be larger and more comprehensive. |
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| One property that might be useful is the ability to update the table passively, requiring periodic lookups to be done in order to refresh the table. |
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| The server is set up to send a malformed response to DNS lookups. |
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| Allowing the network to have dynamic members while ensuring that storage and lookups still function properly certainly is an improvement to our design. |
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| We did not find any evidence, through both DNS lookups and proxy testing, that any of these URLs are blocked. |
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