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Khalil Ganiga Blog

Blog / Topic Guide

AEM Developer Guide

19 articles

Not every useful AEM article belongs to a series - this hub gathers the standalone, practical notes that developers actually search for: running and managing a local instance, writing efficient queries, and the best-practice fixes and troubleshooting write-ups that come from real production issues.

Managing Your AEM Instance

1

How to backup/restore AEM local instance

Learn how to backup or restore local AEM instance using npm cli.

2

How to change the port of a running AEM instance

Find out how to make your AEM system safer by learning how to switch the port it runs on. Explore AEM settings to change the port.

3

How to find the current run mode in AEM

Learn how to find the current run mode AEM instance

4

How to find the version of AEM that you are running

Learn how to find the version of AEM currently in use.

5

How to run offline compaction in AEM on Windows

Learn how to perform offline compaction in aem to reduce the repository size on windows machine.

Querying & Performance

1

Most Common Things AEM Developers Ignore When Using Query Builder and SQL2 Queries

Most AEM performance issues stem from inefficient query usage. This post explains when to use Query Builder vs SQL2, highlights common mistakes like missing indexes, fetching too much data, and running queries in loops, and provides practical best practices for optimized, scalable, and memory-safe queries in asset-heavy projects.

2

Most Useful SQL2 and Xpath Queries in AEM Development

Most useful SQL2 and Xpath queries.

3

A Comprehensive Guide to master XPath Queries in Java

This post provides an in-depth tutorial for mastering XPath queries in Java, covering setup and practical examples for efficient XML document manipulation.

Best Practices & Troubleshooting

1

Difference between jcr:lastModified and cq:lastModified in AEM

Learn about difference between jcr:lastModified and cq:lastModified in AEM

2

AEM Best Practices - When to Close Your ResourceResolver and When Not To

When to close a ResourceResolver in AEM, when leaving it open is actually correct, and the resource-leak and session-reuse pitfalls that catch most developers.

3

Null is Not Enough : Best Way to Check Resource Existence In AEM

AEM tutorial shows you the best way to fetch resources using resolver and avoid common pitfalls.

4

How to register a servlet on all pages in AEM

Learn how to register/invoke a servlet on all pages of AEM.

5

Why Attackers Target Path-Based Servlets in AEM (And What to Do Instead)

Why path-based servlets are one of the biggest security risks in Adobe Experience Manager, how attackers discover and exploit them, and how to build secure resource-type servlets.

6

Implementing A Spinner Dialog and Block User Input During REST API Calls in AEM

Learn how to display a spinner dialog and block user input during REST API calls in AEM by using Coral UI.

7

How to monitor replication queues in AEM

This blog post explains how to create a custom service in AEM to monitor replication queues. The service checks if the queue is blocked and sends notifications to admin users if issues arise. It also includes a scheduler to automatically run the monitoring at set intervals.

8

SegmentNotFoundException in AEM - How to Fix It Safely

Learn what causes SegmentNotFoundException, why it happens, and how to fix and prevent repository corruption in TarMK

9

How to add Custom attribute or element search in AEM Assets UI

Discover how to add a custom attribute or element search for dita content in aem assets ui.

Quick References

1

AEM CheatSheets - The Ulitimate Collection

Blog post about a collection of AEM cheat sheets used in daily AEM development.

2

A Unique Collection of Curated cURL Commands

Check out this unique collection of useful cURL commands for Adobe Experience Manager (AEM). These commands, gathered from various sources, will help make your AEM tasks easier