Hydroxychloroquine sulfate

Hydroxychloroquine sulfate is a solid crystal which doesn't have any color. Formula of Hydroxychloroquine is C18 H26 Cl N3 O. There is a huge rumor in market that this sulfate can be use to heal from the Coronavirus, which is not true. This medicine is to fight with Malaria. Till now there is no medical research proved and call to use the Hydroxychloroquine to treat the patients, but politicians are continuously talking and stocking this medicine all over world, without any fact check.

Although this medicine can be use to increase immune system of our body only.

References and Facts:

1. Use of Hydroxychloroquine, Tablet Plaquenil
2. The FDA’s emergency use authorization of chloroquine and hydroxychloroquine for COVID-19: Dangerous politics, not science
3. Covid-19: six million doses of hydroxychloroquine donated to US despite lack of evidence
4. Fact check: Trump wrongly claims FDA 'approved' drug chloroquine to treat the coronavirus

add versioning with clientlibs files in aem

In this article we wil see how to add or remove versioning with clientlibs files(like JavaScript and Cascading Style Sheet (CSS)) in aem? 

ACS AEM Commons provide a Versioned ClientLibs tool to make serve the clientlibs files(JS and CSS) with postfix with a unique id that is know as long TTLs. Everytime you update your any JS and CSS file that unique id get updated for that and because of that AEM server always serve the latest clientlibs files to browser. It also helps to invalidate the caching at CDN and dispatcher level and ensure every request get served with latest and updated version of clientlibs file.

To make our clientlibs files versionable we need to do the following configurations in AEM.

Install latest ACS AEM Commons. Donwload link. This will help us to allow CSS and JavaScript served via AEM ClientLibs to be cached client-side with long TTLs.

Create a Rewriter Configuration Node  

Under project config folder [/apps/<project name>/config/] create a node rewriter with node type sling:Folder.

Now under the rewriter node, create a node versioned-clientlibs of node type nt:unstructured and add the following highlighted properties on versioned-clientlibs.

You may refer the default configuration of tranformer and versioned-clientlibs under path /libs/cq/config/rewriter/default. 

URI http://localhost:4502/crx/de/index.jsp#/libs/cq/config/rewriter/default

After adding all configurations xml file of versioned-clientlibs will look like this. /apps/<project name>/config/rewriter/versioned-clientlibs/.content.xml

	<?xml version="1.0" encoding="UTF-8"?>
	<jcr:root xmlns:jcr="http://www.jcp.org/jcr/1.0" xmlns:nt="http://www.jcp.org/jcr/nt/1.0"
	jcr:primaryType="nt:unstructured"
	contentTypes="[text/html]"
	enabled="{Boolean}true"
	generatorType="htmlparser"
	order="{Long}1"
	sequence="version"
	serializerType="htmlwriter"
	transformerTypes="[linkchecker,versioned-clientlibs]"/>

view raw versioned-clientlibs.xml hosted with ❤ by GitHub

You may verify the changes in sling rewriter rules. http://localhost:4502/system/console/status-slingrewriter

versioned-clientlibs configuration in sling rewriter

 Apache Configuration

We need to now configure the Apache to send the right header to set a long TTL with clientlibs (JavaScript and CSS) files:

SetEnvIf Request_URI "(\.min)?\.[a-f0-9]+\.js" long_expires=true

SetEnvIf Request_URI "(\.min)?\.[a-f0-9]+\.css" long_expires=true

Header set Cache-Control max-age=2592000 env=long_expires 

How to disable this versioning or TTL from clientlibs files

To disable this feature, in AEM config manager we have a configuration called "ACS AEM Commons - Versioned Clientlibs Transformer Factory".

Go to http://localhost:4502/system/console/configMgr 

Note:

This re-writer does NOT support with

• URIs embedded in CSS or JavaScript, including: background-images, web fonts, etc.
• Relative URIs, e.g. etc/clientlibs/mysite/styles.css
• URIs including a scheme, e.g. http://example.com/etc/clientlibs/mysite/styles.css and //example.com/etc/clientlibs/mysite/styles.css
• URIs to non-AEM HtmlClientLibrary resources, e.g. /etc/designs/mysite.css
• Tags contained in conditional comments.
• ClientLibs included by Javascript (e.g. when leveraging the property channels)

References

• ACS Commons | https://adobe-consulting-services.github.io/acs-aem-commons/
• https://adobe-consulting-services.github.io/acs-aem-commons/features/versioned-clientlibs/index.html
• http://aempodcast.com/2016/front-end-engineering/versioning-clientlibs-aem/#.Xg_LpEczbIV
• http://www.aemcq5tutorials.com/tutorials/versioned-clientlibs-aem/
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