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When is it appropriate to use UDP instead of TCP? [closed]
...hroughput to fluctuate. You can see this clearly when you download a large file.
Because UDP is not using congestion control it can be both faster and experience less delay because it will not seek to maximize the buffers up to the dropping point, i.e. UDP packets are spending less time in buffers ...
When to add what indexes in a table in Rails
...rder.
The goal with indexes is to eliminate the dreaded "table scan" or "file sort" operations that occur when your data is not indexed properly.
In simple terms, look at the queries being generated by your application and ensure that columns referenced in WHERE or HAVING conditions and ORDER BY ...
Hg: How to do a rebase like git's rebase
...ding use of TortoiseHG to commit some but not all changes in an individual file, like git gui's stage/unstage diff hunk for commit).
The process is to get hg updated to the upstream tip, and then get all your changes uncommitted in the working directory. Shelve any that aren't part of what you wan...
Configuring Log4j Loggers Programmatically
...ny Logger (here is root)
Logger.getRootLogger().addAppender(console);
FileAppender fa = new FileAppender();
fa.setName("FileLogger");
fa.setFile("mylog.log");
fa.setLayout(new PatternLayout("%d %-5p [%c{1}] %m%n"));
fa.setThreshold(Level.DEBUG);
fa.setAppend(true);
fa.activateOption...
Setting PayPal return URL and making it auto return?
... Account Overview page appears.
Click the gear icon top right.
The Profile Summary page appears.
Click the My Selling Preferences link in the left column.
Under the Selling Online section, click the Update link in the row for Website Preferences.
The Website Payment Preferences page appe...
Is it necessary to write HEAD, BODY and HTML tags?
...ttps://google.github.io/styleguide/htmlcssguide.html#Optional_Tags
For file size optimization and scannability purposes, consider
omitting optional tags. The HTML5 specification defines what tags can
be omitted.
(This approach may require a grace period to be established as a wider
gu...
In C# what is the difference between a destructor and a Finalize method in a class?
... the unmanaged recources in the dispose
method like database connection, files etc. The class implementing
dispose method should implement IDisposable interface.A Dispose method
should call the GC.SuppressFinalize method for the object it is
disposing if the class has desturctor because it h...
How to send POST request in JSON using HTTPClient in Android?
...lease have a look into the GSON library. It is capable of parsing the JSON file into Java objects.
– JJD
Apr 11 '13 at 9:28
...
Is AngularJS just for single-page applications (SPAs)?
...gular-app/angular-app). The biggest thing to remember is to load in the js files just like you would in any other project. All you have to do is make sure the different pages reference the correct Angular object (controller, view, etc.) and you are off and running. I hope this makes sense, but the a...
Mongodb Explain for Aggregation framework
...d $group) further manipulation will be in-memory (possibly using temporary files if the allowDiskUse option is set).
Optimizing pipelines
In general, you can optimize aggregation pipelines by:
Starting a pipeline with a $match stage to restrict processing to relevant documents.
Ensuring the init...