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What is database pooling?

...in Pool.So connection number is restrict in this pool by pooling type??Or what will happen when connection is not free in Pool? Client need to wait connection free?? – Ye Win Mar 26 '15 at 8:34 ...
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Definition of “downstream” and “upstream”

...nd "downstream". I've seen these before but never understood them fully. What do these terms mean in the context of SCMs ( Software Configuration Management tools) and source code? ...
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UTF-8 all the way through

...sh I were kidding. Data Access: In your application code (e.g. PHP), in whatever DB access method you use, you'll need to set the connection charset to utf8mb4. This way, MySQL does no conversion from its native UTF-8 when it hands data off to your application and vice versa. Some drivers provi...
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How can I know which radio button is selected via jQuery?

... As @Brad mentioned, this will only get the value of the first set. What you want is to replace ".val()" with ".map(function(){return this.value;}).get();" – am_ Oct 6 '13 at 15:29 ...
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How do I sort a vector of pairs based on the second element of the pair?

... @Googol: That's precisely what the OP asked for... He said: "is there and easy way to sort the list in increasing order based on the second element of the pair?" – Evan Teran Dec 5 '14 at 18:42 ...
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Pure JavaScript Graphviz equivalent [closed]

... So far, this is the closest to what I was looking for in the original question. It is not just a RENDERER, it knows how to compute the directed graph as well. Is it running DOT on a backend somewhere, or is the entire graph generation algorithm running ...
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Why do most fields (class members) in Android tutorial start with `m`?

I know about camel case rules, but I'm confused with this m rule. What does it stand for? I'm a PHP developer. "We" use first letters of variables as indication of type, like 'b' for boolean, 'i' for integer and so on. ...
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Associating enums with strings in C#

... What about using this in switch cases? – David Feb 3 '15 at 10:56  |  ...
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What are the risks of running 'sudo pip'?

... Does the threat apply only during pip or for any subsequent run of what it installed? – orome Jan 10 '14 at 23:22 2 ...
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Row count with PDO

There are many conflicting statements around. What is the best way to get the row count using PDO in PHP? Before using PDO, I just simply used mysql_num_rows . ...