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how to clear dispatcher cache in aem ?

How to clear dispatcher cache in aem ? As you may know, the Dispatcher cache in Adobe Experience Manager (AEM) is used to improve the performance of your website by caching static resources and pages. However, sometimes you may need to clear the cache to ensure that the latest content and changes are displayed on your website. In this blog post, we'll show you how to clear the Dispatcher cache in AEM. This method will clear the entire Dispatcher cache, including all cached pages and resources. Keep in mind that clearing the cache may affect the performance of your website, as it may take some time to rebuild the cache. Clear Cache using the Dispatcher Flush Agent You can use the Dispatcher Flush Agent. Follow these steps: Log in to your AEM instance and navigate to http://localhost:4502/etc/replication/agents.author.html . Click on the "Dispatcher Flush" agent to open the agent's configuration page. Clic

Configure/Decoding AEM AuditLogs

AEM Developers, Infrastructure Engineers / Dev-ops teams working in the financial domain regularly come across a challenge for event auditing in AEM. This helps in identifying most of the activities happening in AEM. Audit logs are a very effective way to debug the content issue & to know what all is happening in your environment and by whom. This article addresses in a simple way on how to enable the audit logs, its different ways, and how to understand the audit logs. This article covers the following - How can we enable Audit logs in AEM. How can we read and understand the Audit logs/ tools to use it. Audit log on file system in crx-quickstart/logs folder. Audit logs for User creation / Modification. How can you archive/purge the audit logs. How can we enable Audit logs in AEM? By Default, the Audit logs are pre-configured in AEM, for a few basic operations of DAM and for all other operations of Pages and replications activity etc.. To ge

How to Increase Apache Request Per Second ?

How to Increase Apache Request Per Second ? By default, Apache web server is configured to support 160 requests per second. As your website traffic increases, Apache will start dropping additional requests and this will spoil customer experience. Here’s how to increase Apache requests per second. 1. Install MPM module We need to install MPM Apache module to be able to increase Apache requests per second. You can use mpm_worker or mpm_event module for this, instead of mpm_prefork module which consumes a lot of memory. You can easily install MPM module in Apache with following command For CentOS7/RHEL7 : Adjust /etc/httpd/conf.modules.d/00-mpm.conf Comment the line LoadModule mpm_prefork_module modules/mod_mpm_prefork.so by adding # in front of it. Uncomment the line LoadModule mpm_worker_module modules/mod_mpm_worker.so by removing # in front of it. For Ubuntu/Debian : Use a2dismod / a2enmod to disable mpm_prefork and enable mpm_worker 2. Increase Max Connections in Apache Open MP

AdobeDispatcherHacks ".statfile"

AEM DISPATCHER STATFILE UNDERSTANDING & CACHE INVALIDATION:- AEM Developers, Infrastructure Engineers regularly come across a challenge on decoding the statfile and using it efficiently especially statfile becomes highly relevant in a multi-tenanted environment with different project teams controlling different sites. The article addresses in a simple way on how to understand the mechanisms of stat file and gives a detailed explanation of how it can be used in a multi-tenant environment model. The image for your reference as a quick overview of the data flow, before we take a deep dive. This article covers - 1 - When dispatcher serves the old version of the content. How to avoid it. 2- Cache invalidation mechanism. Assumption - If you are reading this article, I believe you would have a basic understanding of Dispatcher and it's configuration. Firstly let’s set the initial configuration for the cache invalidation section of the dis

How Does S3 works with AEM ?

How Does S3 works with AEM ? Accommodating a huge amount of assets in any content management platform is challenging. Adobe Experience Manager offers an integration with the Amazon S3 storage solution, allowing binary data for images, documents and videos to be stored in an S3 bucket. Amazon S3 is highly performant and offers nearly infinite storage capacity. When talking about terabyte storage, performance is everything. The choices made during the planning and architecting phase can literally make or break the performance of a CMS system and the websites running on it. Adobe Experience Manager offers a number of storage methods, each offering a different way of storing data. Each of these options has its strengths and weaknesses. In AEM storage the mechanisms are called Micro Kernels, or MK for short. In this article we will look at the AEM with S3 data store. For the detailed steps for S3 configuration you can refer - https://www.aemrules.com/2022/05/how-to-configure-s3-in-aem

curl command AEM package filter addition creation

How to create AEM package via CURL Most of our dev ops and AEM developers face issue while automating the AEM package creation via Curl. I will explain the command and process for it. in AEM package creation is a 3 steps process. 1- AEM package creation 2 - Filter addition 3- Package build Let's see all these 3 steps in detail - AEM package creation it is simple step - curl -u admin:admin -X POST http://localhost:4502/crx/packmgr/service/.json/etc/packages/my_packages/testpackage?cmd=create \ -d packageName=testpackage \ -d groupName=my_packages Filter Addition This is a complex step where you need to be careful while adding the parameters. General command , in this " /content/my-site" is my package filter. You can also define the rule like exclude in exclude section. curl -u admin:admin -X POST http://localhost:4502/crx/packmgr/update.jsp \ -F path=/etc/packages/my_packages/testpackage.zip -F packageName=testpackage \ -F groupName=my_packages \ -F filter=&q

How Encrypt-Decrypt Data in AEM , AEM Crypto Support ?

How to Use Crypto Support in AEM to Encrypt/Decrypt Data? While working with AEM, The AEM dev-ops / developer team sometimes have a requirements to call third-party APIs/Services. Configurations related to these APIs/Services like username, passwords, client id/secrets, API keys are usually stored in a code repository in the form of OSGi configuration. This sensitive information should be stored encrypted rather than plain-text format. This is possible through the OOTB AEM Crypto Support bundle. This bundle provides services for encrypting and decrypting the confidential/secured data through system-wide keys (hmac and master files). What are the Features of Crypto Support? Decryption happens at runtime. No one can decrypt the data through the UI. There’s no UI to decrypt the encrypted data. So, the information remains secure. What are hmac/master keys? Encryption/decryption happens through keys (hmac and master files). These keys get generated during the first startup of AEM instance

Dispatcher flush from AEM UI

How to Delete Dispatcher cache without logging into the Dispatcher servers? Our Authoring team faces day to day challenges while deleting/flush the dispatcher cache. when the changes are not visible on server. They have to be depended on the IT operations/Dev ops teams to do the same. Which some time get very much time consuming for a small work. In this article we will see it can be configure and used by Author UI itself. This will allow AEM authors (or “super authors”) to flush parts of the dispatcher cache manually without the involvement of IT Operations. How to Use 1. Log in to AEM Author 2. Download the ACS commons tool from ACS Commons Official page 3. Install the downloaded package via aem package manager. 4. Make sure you create the dispatcher flush agents on Author for all Dispatchers. from http://<<host:port>>/miscadmin#/etc/replication/agents.author, check the NOTE's part at the end of page. 5. Navigate to Tools 6. Under the acs-commmons/dispatcher-flu

How to prevent DDoS in Apache ?

Prevent DDoS in Apache & IP Block Automation DDoS (Distributed Denial of Service) attacks are a type of cyberattack that can cause serious damage to your web server. These attacks involve flooding your server with a huge volume of traffic, overwhelming its resources and causing it to crash. In this blog post, we'll discuss how to prevent DDoS attacks in Apache, without using any third part tool/application. Available Options to Prevent DDoS : You can use various mentioned methods to achieve the same. But using WAF, CDN, etc will cost extra dollars. Which might not be necessary for a small scale application. Use a Web Application Firewall (WAF): A WAF can help detect and block malicious traffic before it reaches your Apache server. It can also help block common attack vectors, such as SQL injection and cross-site scripting (XSS). Install mod_evasive: mod_evasive is an Apache module that helps detect and block DDoS attacks. It wor

OakAccess0000: Access denied

ERROR :- OakAccess0000: Access denied We often observe while doing the AEM development or in live running environment we get the error code OakAccess0000 , while running a workflow or any asset upload. This impact the business as content author are unable to upload any content. Error stack trace :- Javax.jcr.AccessDeniedException: OakAccess0000: Access denied at org.apache.jackrabbit.oak.api.CommitFailedException.asRepositoryException(CommitFailedException.java:232) [org.apache.jackrabbit.oak-api:1.10.6] at org.apache.jackrabbit.oak.api.CommitFailedException.asRepositoryException(CommitFailedException.java:213) [org.apache.jackrabbit.oak-api:1.10.6] at org.apache.jackrabbit.oak.jcr.delegate.SessionDelegate.newRepositoryException(SessionDelegate.java:669) [org.apache.jackrabbit.oak-jcr:1.10.6] at org.apache.jackrabbit.oak.jcr.delegate.SessionDelegate.save(SessionDelegate.java:495) [org.apache.jackrabbit.oak-jcr:1.10.6] at org.apache.jackrabbit.oak.jcr.session.SessionImpl$8.per

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CQ5 Crypto DDoS HMAC dispacther filter group httpd log replication s3 tools useraudit AEM as a cloud Service ALB ELB IP Invalidate LDAP OakAccess0000 StartServers X-FORWARDED-FOR access acl acs-commons audit auditlog author block bucket buid build certs change. checksum compaction content curl datastore debug delete directory docroot dos failure fds flush growth install load balancer logging maven modification mpm mvn oak otc package permission pom pre-warming purge reposetory repository root segment size ssl statfile storage tar ui update upgrade whitelisting

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Popular Posts

How to Increase Apache Request Per Second ?

How to Increase Apache Request Per Second ? By default, Apache web server is configured to support 160 requests per second. As your website traffic increases, Apache will start dropping additional requests and this will spoil customer experience. Here’s how to increase Apache requests per second. 1. Install MPM module We need to install MPM Apache module to be able to increase Apache requests per second. You can use mpm_worker or mpm_event module for this, instead of mpm_prefork module which consumes a lot of memory. You can easily install MPM module in Apache with following command For CentOS7/RHEL7 : Adjust /etc/httpd/conf.modules.d/00-mpm.conf Comment the line LoadModule mpm_prefork_module modules/mod_mpm_prefork.so by adding # in front of it. Uncomment the line LoadModule mpm_worker_module modules/mod_mpm_worker.so by removing # in front of it. For Ubuntu/Debian : Use a2dismod / a2enmod to disable mpm_prefork and enable mpm_worker 2. Increase Max Connections in Apache Open MP

How to Integrate LDAP with AEM ?

AEM - LDAP Integration LDAP (the L ightweight D irectory A ccess P rotocol) is used for accessing centralised directory services. You can achieve below vital things with LDAP integration The User accounts can be synchronised between LDAP server and the AEM repository. The AEM uses LDAP authentication to authenticate users, with credentials being passed to the LDAP server for validation. To improve performance, successfully validated credentials can be cached by repository, with an expire timeout. This helps reduce the effort required to manage user accounts as they can be accessed by the multiple applications. When a user/account is removed from LDAP server validation is no longer granted & access to the AEM is denied. The following are the AEM steps for integrating the LDAP and using it as your Single Sign On (SSO) source of truth for authenticating AEM Users. In order to have LDAP working with AEM, you need to create three OSGi configurations: An LDAP Identity Pro

AdobeDispatcherHacks ".statfile"

AEM DISPATCHER STATFILE UNDERSTANDING & CACHE INVALIDATION:- AEM Developers, Infrastructure Engineers regularly come across a challenge on decoding the statfile and using it efficiently especially statfile becomes highly relevant in a multi-tenanted environment with different project teams controlling different sites. The article addresses in a simple way on how to understand the mechanisms of stat file and gives a detailed explanation of how it can be used in a multi-tenant environment model. The image for your reference as a quick overview of the data flow, before we take a deep dive. This article covers - 1 - When dispatcher serves the old version of the content. How to avoid it. 2- Cache invalidation mechanism. Assumption - If you are reading this article, I believe you would have a basic understanding of Dispatcher and it's configuration. Firstly let’s set the initial configuration for the cache invalidation section of the dis

Configure/Decoding AEM AuditLogs

AEM Developers, Infrastructure Engineers / Dev-ops teams working in the financial domain regularly come across a challenge for event auditing in AEM. This helps in identifying most of the activities happening in AEM. Audit logs are a very effective way to debug the content issue & to know what all is happening in your environment and by whom. This article addresses in a simple way on how to enable the audit logs, its different ways, and how to understand the audit logs. This article covers the following - How can we enable Audit logs in AEM. How can we read and understand the Audit logs/ tools to use it. Audit log on file system in crx-quickstart/logs folder. Audit logs for User creation / Modification. How can you archive/purge the audit logs. How can we enable Audit logs in AEM? By Default, the Audit logs are pre-configured in AEM, for a few basic operations of DAM and for all other operations of Pages and replications activity etc.. To ge

how to clear dispatcher cache in aem ?

How to clear dispatcher cache in aem ? As you may know, the Dispatcher cache in Adobe Experience Manager (AEM) is used to improve the performance of your website by caching static resources and pages. However, sometimes you may need to clear the cache to ensure that the latest content and changes are displayed on your website. In this blog post, we'll show you how to clear the Dispatcher cache in AEM. This method will clear the entire Dispatcher cache, including all cached pages and resources. Keep in mind that clearing the cache may affect the performance of your website, as it may take some time to rebuild the cache. Clear Cache using the Dispatcher Flush Agent You can use the Dispatcher Flush Agent. Follow these steps: Log in to your AEM instance and navigate to http://localhost:4502/etc/replication/agents.author.html . Click on the "Dispatcher Flush" agent to open the agent's configuration page. Clic

How Encrypt-Decrypt Data in AEM , AEM Crypto Support ?

How to Use Crypto Support in AEM to Encrypt/Decrypt Data? While working with AEM, The AEM dev-ops / developer team sometimes have a requirements to call third-party APIs/Services. Configurations related to these APIs/Services like username, passwords, client id/secrets, API keys are usually stored in a code repository in the form of OSGi configuration. This sensitive information should be stored encrypted rather than plain-text format. This is possible through the OOTB AEM Crypto Support bundle. This bundle provides services for encrypting and decrypting the confidential/secured data through system-wide keys (hmac and master files). What are the Features of Crypto Support? Decryption happens at runtime. No one can decrypt the data through the UI. There’s no UI to decrypt the encrypted data. So, the information remains secure. What are hmac/master keys? Encryption/decryption happens through keys (hmac and master files). These keys get generated during the first startup of AEM instance

AEM ACL and how they are evaluated

ACL's and how they are evaluated ? AEM Developers, Infrastructure Engineers / Dev-ops teams working in any domain regularly come across a challenge for understanding the ACL & its evaluation mechanism. Adobe Experience Manager is designed to cater for content authoring of multiple sites by multiple content authors. Naturally, this process needs to be controlled by strict Access Control Lists (ACLs) to manage. AEM WCM uses Access Control Lists (ACLs) to organise the permissions being applied to the various pages. This article addresses in a simple way on how to understand the ACL's , its different ways, This article covers the following - How can we read and understand the ACL. Evaluation of user permissions. Concurrent Permission on ACL Access Control Lists are made up of the individual permissions and are used to determine the order in which these permissions are actually applied. The list is formed according to the hierarchy of the pages under consideration. How can w

curl command AEM package filter addition creation

How to create AEM package via CURL Most of our dev ops and AEM developers face issue while automating the AEM package creation via Curl. I will explain the command and process for it. in AEM package creation is a 3 steps process. 1- AEM package creation 2 - Filter addition 3- Package build Let's see all these 3 steps in detail - AEM package creation it is simple step - curl -u admin:admin -X POST http://localhost:4502/crx/packmgr/service/.json/etc/packages/my_packages/testpackage?cmd=create \ -d packageName=testpackage \ -d groupName=my_packages Filter Addition This is a complex step where you need to be careful while adding the parameters. General command , in this " /content/my-site" is my package filter. You can also define the rule like exclude in exclude section. curl -u admin:admin -X POST http://localhost:4502/crx/packmgr/update.jsp \ -F path=/etc/packages/my_packages/testpackage.zip -F packageName=testpackage \ -F groupName=my_packages \ -F filter=&q

How Does S3 works with AEM ?

How Does S3 works with AEM ? Accommodating a huge amount of assets in any content management platform is challenging. Adobe Experience Manager offers an integration with the Amazon S3 storage solution, allowing binary data for images, documents and videos to be stored in an S3 bucket. Amazon S3 is highly performant and offers nearly infinite storage capacity. When talking about terabyte storage, performance is everything. The choices made during the planning and architecting phase can literally make or break the performance of a CMS system and the websites running on it. Adobe Experience Manager offers a number of storage methods, each offering a different way of storing data. Each of these options has its strengths and weaknesses. In AEM storage the mechanisms are called Micro Kernels, or MK for short. In this article we will look at the AEM with S3 data store. For the detailed steps for S3 configuration you can refer - https://www.aemrules.com/2022/05/how-to-configure-s3-in-aem

How to Sync HMAC in AEM ?

Crypto Support in AEM (Syncing HMAC among AEM instances) AEM OOTB provides a feature where we can encrypt the secured and confidential data through OOTB AEM Crypto Support and store it in a code repository in the form of OSGi configuration. Crypto Support is based on keys (hmac and master files) which are unique for each AEM instance. Encrypted text generated for the same plain-text string on one AEM instance will be different from another instance. This can raise alarms in cases where we have the same OSGi configuration values shared among Author and Publish instances under the same topology. For e.g. /apps/project/config.prod/com.day.cq.db.dbservice.xml Here DB password for Default DB Service will be same across all Prod AEM instances. So, in order to make sure that the same encrypted value works on all Prod instances, we will have to sync hmac and master files among Prod Author and Publish instances. Vital Points to know before HMAC SYNC Sync of HMAC/keys will break the AEM SSL and

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