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what’s the difference between Expires and Cache-Control headers?

... Cache-Control was introduced in HTTP/1.1 and offers more options than Expires. They can be used to accomplish the same thing but the data value for Expires is an HTTP date whereas Cache-Control max-age lets you specify a relative amount of time so you could specify "X hours a...
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Apache Commons equals/hashCode builder [closed]

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Java Garbage Collection Log messages

...f the heap: the amount of space usable for java objects without requesting more memory from the operating system. Note that this number does not include one of the survivor spaces, since only one can be used at any given time, and also does not include the permanent generation, which holds metadata ...
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How to Save Console.WriteLine Output to Text File

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Why does pthread_cond_wait have spurious wakeups?

...ue lock, thread 1 completes its current task, and returns to the queue for more work. It obtains the queue lock, checks the predicate, and finds that there is work in the queue. It proceeds to dequeue the item that thread 3 inserted, releases the lock, and does whatever it does with the item that th...
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Ruby max integer

...mallest_known_bignum + largest_known_fixnum) / 2 # Geometric mean would be more efficient, but more risky end if next_number_to_try <= largest_known_fixnum || smallest_known_bignum && next_number_to_try >= smallest_known_bignum raise "Can't happen case" end case n...
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How can I iterate through the unicode codepoints of a Java String?

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Resumable downloads when using PHP to send the file?

...1.0 206 Partial Content. Without having tested anything, this could work, more or less: $filesize = filesize($file); $offset = 0; $length = $filesize; if ( isset($_SERVER['HTTP_RANGE']) ) { // if the HTTP_RANGE header is set we're dealing with partial content $partialContent = true; ...
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How can I convert a string to a number in Perl?

...it's mostly right. Another way of saying the same thing is that Perl cares more about the verbs than it does the nouns. Are you trying to do something and it isn't working? share | improve this ans...
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Why does UITableViewCell remain highlighted?

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