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Tactics for using PHP in a high-load site
...isn't cutting, there are several techniques to scale up, depending on your app. Replicating to additional servers typically works well if you have more reads than writes. Sharding is a technique to split your data over many machines.
Caching
You probably don't want to cache in your database. The...
Check whether a string is not null and not empty
...d to str.isBlank() which will also test for other Unicode white spaces)
Wrapped in a handy function:
public static boolean empty( final String s ) {
// Null-safe, short-circuit evaluation.
return s == null || s.trim().isEmpty();
}
Becomes:
if( !empty( str ) )
...
Nullable Foreign Key bad practice?
...c. etc. 2-valued logic is sufficient, but the data structures we get when applyiing it make "as simple as possible" still far less simple than "as simple as we'd want".
– Erwin Smout
May 24 '17 at 7:37
...
What is the difference between a thread and a fiber?
...ht-weight, cooperative threads. Both are separate execution paths for your application.
With threads: the current execution path may be interrupted or preempted at any time (note: this statement is a generalization and may not always hold true depending on OS/threading package/etc.). This means tha...
How would I create a UIAlertView in Swift?
...ass ViewController: UIViewController {
@IBAction func showAlertButtonTapped(_ sender: UIButton) {
// create the alert
let alert = UIAlertController(title: "My Title", message: "This is my message.", preferredStyle: UIAlertController.Style.alert)
// add an action (butto...
Automatic Preferred Max Layout Width is not available on iOS versions prior to 8.0
...ug in Xcode6-Beta6 and XCode6-Beta7 and can be safely ignored for now.
An Apple engineer in the Apple Developer forums had this to say about the bug:
Preferred max layout width is an auto layout property on UILabel that
allows it to automatically grow vertically to fit its content.
Versions...
Can someone explain Microsoft Unity?
...t really grasp this Unity thing yet, and I think it's the next step in our application design.
7 Answers
...
How do I make JavaScript beep?
... This no longer works in Chrome. It used to, and now my beeping app no longer works. Any idea how to fix/replace it?
– Houshalter
Apr 10 '15 at 4:29
1
...
Are PHP short tags acceptable to use?
.... as long as you're comfortable requiring PHP 5.4. Widely-distributed PHP apps (like wordpress) don't have the luxury of requiring 5.4, and even continued to offer PHP 4 support up until 2011 -- a full 7 years after PHP 5 was released. If you're at a place like facebook, where all installations of...
What database does Google use?
...table, including web indexing,
Google Earth, and Google Finance.
These applications place very
different demands on Bigtable, both in
terms of data size (from URLs to web
pages to satellite imagery) and
latency requirements (from backend
bulk processing to real-time data
serving).
...