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Useful resources of database normalization

Posted by beroza on January 05, 2018

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database normalize

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Lazy loading of Google double click for publisher tag

The idea of Google DFP is very much needed feature. Every content rich websites should consider lazy loading of the Google DFP ads. Why we need lazy loading of DFP ads? The concept of lazy loading of Google DFP ads is to minimize the load time during the page load. Cases where we need lazy loading of DFP ads If we have DFP ads that are in the bottom of the page and not visible in the viewport as soon as the page loads, those ads should be lazy loaded. Sample code for lazy loading ads Let say we have the following ad that we want to lazy load: < div class = "adunit-lazy" id = "banner" data-name = "banner" data-size-mapping = "sizemapping" ></ div > Notice that we have a class called "adunit-lazy" on the adunit element that we will target in our JavaScript. The above adunit is not visible as soon as the site loads. When the user scrolls down and the adunit gets visible we will load the ad. Lets det...

Exception thrown in event listener: "Error: Syntax error, unrecognized expression: #articleboard/board1" Google dfp

While I was working on Google's DoubleClick for Publishers ads the console was showing the following errors: "Error: Syntax error, unrecognized expression: #articleboard/board1" Pattern of the error I had quite a lot of ads on my website and the adunit IDs are topbanner, netbanner, articleboard etc. I also had some ads those IDs are articleboard/board1, articleboard/board2, articleboard/board3. The error was only happening for articleboard/board1 types of ads. Reason of the error I was using a jQuery plugin to load the ads on my website. This plugin was not able to read the adunit element from the DOM if the DOM element has the ID with a forward slash (/). For example: <div class="adunit-lazy" id="netbanner/banner1" data-name="netbanner/banner1" data-size-mapping="netmapping"> </div> Solution of the error To solve the above issue we need to escape the forward slash of the adunit ID. In Java...

Utility classes should not have public constructors

When we were working on a Utility class on our Java project. In our project the SonarQube analyze tool was integrated. One of our utility class was called ContentUtils like below: public class ContentUtil { In the ContentUtil class all our methods was static. It was meant to be for utilities. To access this class methods no instance was needed. As soon as we analyzed the class the SonarQube it complained with the following error: Utility classes should not have public constructors Solution To fix the issue we had add a private constructor of the utility class private ContentUtil ( ) { throw new IllegalStateException ( " Utility class " ) ; } Why private constructor When we use the private constructor Java compiler will not provide a public parameterless constructor. It is also recommended to make the class as final so that other class can't extends this utility class. Final solution is: public final class ContentUtil { private ContentU...

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Useful resources of database normalization

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