Integrate Google reCAPTCHA with AEM

You can use Google reCAPTCHA to your AEM site to protect your website from automated script attacks while letting real users pass through with ease. The reCAPTCHA library is a free service that protects your website from spam and abuse. By using reCAPTCHA, you can improve the security of your AEM site. For more information, see reCAPTCHA.

The following illustration shows reCAPTHCA included within an AEM site. 

An AEM web page using recaptcha

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References
Integrate Google reCAPTCHA with AEM

Integrating SOLR with Adobe Experience Manager

You can integrate SOLR with Adobe Experience Manager to improve searching. Solr is the popular, blazing-fast, open source enterprise search platform built on Apache Lucene. Solr is highly reliable, scalable and fault tolerant, providing distributed indexing, replication and load-balanced querying, automated fail-over and recovery, centralized configuration and more. Solr powers the search and navigation features of many of the world's largest internet sites. For more information, see http://lucene.apache.org/solr/.

The following illustration shows the SOLR client.

The SOLR web client

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AEM Architecture

The following diagram illustrates the interrelationship between AEM and other operational elements; which may be products from Day Management, or their third-party equivalents:

Apache Sling Pipes - tool for doing extract - transform - load operations

While working on huge amounts of Enterprise content data, I am sure you guys must have faced scenarios wherein there is a need to modify some part of content with a particular property or some property/node is wrongly edited and you are asked to find all those nodes and correct that property . Similar sort of problems become cumbersome if the amount of data is quite huge. General approach to solve this would be to write either some Groovy script or write some Java code to parse the content and change the necessary nodes. To overcome this redundant issue in content and to make a scalable approach to deal with all these content related issues, Apache came up with Sling Pipes.

What is a pipe

Its a tool where you can load content tree nodes , perform some operation and either Retrieve an output or Modify the nodes. The aim here is to provide reusable blocks called pipes which can be configured for any possible operation on content.

         getOutputBinding
               ^
               |
 getInput  +---+---+   getOutput
           |       |
      +----> Pipe  +---->
           |       |
           +-------+

Creating an AEM 6.2 HTML Template Language component that uses a Multi-Field dialog

You can create an Adobe Experience Manager (AEM) 6 Touch UI component that can be used within the AEM Touch UI view. Furthermore, you can use the AEM HTML Template Langauge (HTL - formally known as Sightly) to develop the AEM component. For example, consider an author whom enters information into a multi-field control in the component's dialog, as shown in this illustration.

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Creating an AEM HTML Template Language Component that displays data from a Restful Web Service

You can create an Adobe Experience Manager (AEM) HTML Template Language (HTL) component that displays data retrieved from a third-party Restful web service. For example, assume you want to display data based on the distance between two cities on your web site. In this situation, you can develop an AEM HTL component that displays data between two cities, as shown in this illustration.

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Issues while Migrating from Java6 to Java8 in AEM 6.1

Recently while working on AEM 6.1, I had to move from Java 6 to Java 8. Simply changing the Java version in POM led to some issues with OSGi services. Specifically, those services that were using @Reference annotation were not getting active and remained in “satistied” state.
Here are all the steps I followed firstly to change Java version and then fixing above mentioned issue:
1. To build an AEM project with Java8 as runtime environment, following configuration is required in pom.xml. The Compiler Plugin is added to the parent POM, it is used to compile the sources of your project.