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When to add what indexes in a table in Rails
...of the database, and the nature of your query. If the query comes from the web I would probably say YES, because it's always better to get fast responses, if it is for a background job and you need to save disk space you don't need to set it, but if the disk space is not an issue I would add an inde...
Is GridFS fast and reliable enough for production?
I develop a new website and I want to use GridFS as storage for all user uploads, because it offers a lot of advantages compared to a normal filesystem storage.
...
Verify a certificate chain using openssl verify
...ificate files are correct before you try to install them in the productive web service. This recipe here performs exactly this pre-flight-check.
Please note that the answer of Peter is correct, however the output of openssl -verify is no clue that everything really works afterwards. Yes, it migh...
Setting PayPal return URL and making it auto return?
....
Under the Selling Online section, click the Update link in the row for Website Preferences.
The Website Payment Preferences page appears
Under Auto Return for Website Payments, click the On radio button to enable Auto
Return.
In the Return URL field, enter the URL to which you want you...
How can I display just a portion of an image in HTML/CSS?
...at.
div.container {
display: inline-block;
}
#rectangular {
-webkit-clip-path: inset(30px 10px 30px 10px);
clip-path: inset(30px 10px 30px 10px);
}
#circle {
-webkit-clip-path: circle(75px at 50% 50%);
clip-path: circle(75px at 50% 50%)
}
#ellipse {
-webkit-clip-path: e...
OS detecting makefile
...t an example you may not need, but this may help someone searching (on the web) a way to implement a Makefile for both platforms ;-) What should I change in my answer? Cheers
– olibre
Feb 11 '13 at 8:59
...
PHP $_SERVER['HTTP_HOST'] vs. $_SERVER['SERVER_NAME'], am I understanding the man pages correctly?
... sent to the other domain.
Either way, you just need to be sure that your webapp will only ever respond for known-good domains. This can be done either (a) with an application-side check like Gumbo's, or (b) by using a virtual host on the domain name(s) you want that does not respond to requests th...
How to send POST request in JSON using HTTPClient in Android?
...couple of ways to establish HHTP connection and fetch data from a RESTFULL web service. The most recent one is GSON. But before you proceed to GSON you must have some idea of the most traditional way of creating an HTTP Client and perform data communication with a remote server. I have mentioned bot...
What does a Ajax call response like 'for (;;); { json data }' mean? [duplicate]
... @mridkash: Yeah, but remember it only controls misuse of the data via a web browser. Anyone who wants to can get the data manually, or use a non-browser-based tool to retrieve the text and use it in an automated process (even create a reflector that strips off the prefix). So it's not like it's r...
Is AngularJS just for single-page applications (SPAs)?
...dea:
What’s the difference between a project and an app? An app is a Web
application that does something – e.g., a Weblog system, a database of
public records or a simple poll app. A project is a collection of
configuration and apps for a particular website. A project can contain
mul...