36 lines
1.1 KiB
Factor
36 lines
1.1 KiB
Factor
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USING: kernel assocs locals combinators
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math math.functions system unicode.case ;
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IN: dns.cache.nx
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! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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: nx-cache ( -- table ) H{ } ;
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: nx-cache-at ( name -- time ) >lower nx-cache at ;
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: nx-cache-delete-at ( name -- ) >lower nx-cache delete-at ;
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: nx-cache-set-at ( time name -- ) >lower nx-cache set-at ;
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! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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: now ( -- seconds ) millis 1000.0 / round >integer ;
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:: non-existent-name? ( NAME -- ? )
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[let | TIME [ NAME nx-cache-at ] |
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{
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{ [ TIME f = ] [ f ] }
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{ [ TIME now <= ] [ NAME nx-cache-delete-at f ] }
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{ [ t ] [ t ] }
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}
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cond
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] ;
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! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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:: cache-non-existent-name ( NAME TTL -- )
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[let | TIME [ TTL now + ] | TIME NAME nx-cache-set-at ] ;
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! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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