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How many socket connections can a web server handle?
...n a single Unix flavoured OS machine - https://blog.whatsapp.com/index.php/2012/01/1-million-is-so-2011/.
And finally, this one, http://highscalability.com/blog/2013/5/13/the-secret-to-10-million-concurrent-connections-the-kernel-i.html, goes into a lot of detail, exploring how even 10 million could...
Is file append atomic in UNIX?
...he size of 'PIPE_BUF' is supposed to be atomic. That should be at least 512 bytes, though it could easily be larger (linux seems to have it set to 4096).
This assume that you're talking all fully POSIX-compliant components. For instance, this isn't true on NFS.
But assuming you write to a log fi...
What does dot (.) mean in a struct initializer?
... second;
int third;
};
...you can use
struct demo_s demo = { 1, 2, 3 };
...or:
struct demo_s demo = { .first = 1, .second = 2, .third = 3 };
...or even:
struct demo_s demo = { .first = 1, .third = 3, .second = 2 };
...though the last two are for C99 only.
...
How to access cookies in AngularJS?
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200
This answer has been updated to reflect latest stable angularjs version. One important note is...
How to switch a user per task or set of tasks?
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244
With Ansible 1.9 or later
Ansible uses the become, become_user, and become_method directives ...
How to swap two variables in JavaScript
...
27 Answers
27
Active
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How do I convert array of Objects into one Object in JavaScript?
...r arr = [
{key : '11', value : '1100', $$hashKey : '00X' },
{key : '22', value : '2200', $$hashKey : '018' }
];
//convert
var result = {};
for (var i = 0; i < arr.length; i++) {
result[arr[i].key] = arr[i].value;
}
console.log(result);
...
How can I find the last element in a List?
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212
If you just want to access the last item in the list you can do
if(integerList.Count>0)
{
...
Best way to test if a row exists in a MySQL table
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12 Answers
12
Active
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Java time-based map/cache with expiring keys [closed]
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329
Yes. Google Collections, or Guava as it is named now has something called MapMaker which can do...