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How many system resources will be held for keeping 1,000,000 websocket open? [closed]
...disclosure: I am the CTO at Lightstreamer).
We had to demonstrate several times, to some of our customers, that 1 million connections can be reached on a single box (and not necessarily a super-monster machine). But let me recap the configuration where we tested 500K concurrent connections, as this...
C# Convert List to Dictionary
...out in the comments, this will fail if an item exists in the list multiple times.
Depending on your specific requirements, you can either use var dict = list.Distinct().ToDictionary(x => x); to get a dictionary of distinct items or you can use ToLookup instead:
var dict = list.ToLookup(x => x...
Best way to use PHP to encrypt and decrypt passwords? [duplicate]
...
Bad sample; two times random for IV, not using IV at all because of ECB, using ECB encoding in the first place, not using AES compatible code, not padding the message correctly. Yes, it works in the same sense that the random number generato...
When is localStorage cleared?
... sessionStorage, except that data stored in localStorage has no expiration time, while data stored in sessionStorage gets cleared when the browsing session ends (i.e. when the browser / browser tab is closed). Session storage is used much less often than localStorage, and exists only within the curr...
Using vagrant to run virtual machines with desktop environment
...d:
sudo apt-get install xfce4
sudo startxfce4&
If this is the first time you're running this Ubuntu environment, you'll need to run the following command before installing xfce4:
sudo apt-get update
That's it, you should be landed in a xfce4 session.
Update: For a better experience, I re...
Executing elements inserted with .innerHTML
...nnerHTML is not the same as node.appendChild. You might want to spend some time on the Javascript Client Reference for more details and the DOM. Hope the following helps...
Sample injection works:
<html>
<head>
<title>test</title>
<script language="javascript" type="tex...
How to run test cases in a specified file?
...r1/folder2/ -v -count 1
-count 1 also ensures that the test is ran every time instead of being cached. Useful when you are testing against race conditions and have a test that fails only sometimes. In Go versions not using modules the same could be achieved by setting GOCACHE=off but this interact...
IIS: Idle Timeout vs Recycle
...
Idle Timeout is if no action has been asked from your web app, it the process will drop and release everything from memory
Recycle is a forced action on the application where your processed is closed and started again, for memory...
What is two way binding?
... is so painfully obvious once you see it. Thank you so much for taking the time to provide a clear answer and example.
– Chris M
Nov 22 '12 at 2:27
...
How to check if AlarmManager already has an alarm set?
...G_UPDATE_CURRENT);
Calendar calendar = Calendar.getInstance();
calendar.setTimeInMillis(System.currentTimeMillis());
calendar.add(Calendar.MINUTE, 1);
AlarmManager alarmManager = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
alarmManager.setRepeating(AlarmManager.RTC_WAKEUP, calen...